This document provides installation and maintenance instructions for IHC Lagersmit's SUPREME stern tube seals. It includes details on:
1. Installing the aft and forward seals, including checking alignment, built-in length, and run-out tolerances.
2. Taking an initial zero wear down measurement of the aft bearing bush before launch.
3. Filling the stern tube, circulation tank, and any additional lubrication tanks with the specified mineral or biological oil.
Fresh water generators produce fresh water for domestic and auxiliary use aboard ships by distilling or desalinating sea water. They are essential aboard ships where fresh water consumption can be over 30 tonnes per day. There are two main methods - distillation and reverse osmosis. Distillation involves boiling sea water under vacuum to evaporate it, then condensing the vapor to produce fresh water. Reverse osmosis uses semipermeable membranes to filter out salt and other ions. Fresh water generators recover waste heat from sources like the main engine to economically produce fresh water as needed.
The stern tube is a hollow tube running through the bottom of a ship that contains the propeller shaft. It connects the main engine to the propeller and supports the large weight of the propeller. Stern tubes are designed to keep water from leaking into the ship while allowing the propeller shaft to rotate freely. They contain bearings lubricated with oil or water to reduce friction and prevent leakage between the stern tube and propeller shaft. Modern systems aim to improve lubrication and reduce contamination of lubricants with water for more efficient propulsion.
Pumps are machines that use mechanical action to move fluids by increasing pressure or lifting them against gravity. There are two main types of pumps: positive displacement pumps and centrifugal pumps. Positive displacement pumps work by trapping a fixed amount of fluid and forcing it into the discharge pipe with a piston, plunger, gears, lobes or diaphragm. Centrifugal pumps use centrifugal force from an impeller to accelerate and direct fluid outwards into a discharge pipe. Proper maintenance is important for pump efficiency and performance.
1. The document discusses separation techniques for removing impurities from fuels, including gravity separation and centrifugation.
2. Gravity separation uses settling tanks and centrifuges apply centrifugal force to separate denser components like water and dirt from lighter components like fuel.
3. Centrifugation, or the use of centrifuges, amplifies the effects of gravity through high-speed rotation, allowing for more rapid and continuous separation than gravity alone.
This document provides information about shipboard incinerators. It defines an incinerator as machinery used to burn various wastes generated on ships, such as oily rags and galley waste. It describes typical incinerator features like refractory lining and automatic controls. It provides details on normal incinerator operation procedures, the types of wastes that can be incinerated according to IMO regulations, and emission standards for type approval testing. The document also outlines safety requirements for incinerator design, operation, controls, and fire protection in waste storage spaces.
The crankshaft converts the reciprocating motion of the piston into rotational motion. It consists of journals, crank webs, and crankpins. Crankshafts can be single-piece, shrunk-fit, or welded constructions. Stresses in the crankshaft include bending, twisting, and residual stresses from shrink fitting. Materials are typically carbon steels. Large two-stroke engines use semi-built crankshafts constructed by shrink fitting forged webs and journals. Medium-speed four-stroke engines use forged one-piece crankshafts. Connecting rods transmit force between the piston and crankshaft and help lubricate the bottom end.
This document discusses ship maneuvering systems including rudders, propellers, and steering gears. It describes different types of rudders such as balanced, semi-balanced, and unbalanced rudders. It also discusses factors that affect rudder design and placement including ship size and maneuverability requirements. Additionally, it covers active rudder systems like azimuth thrusters and Voith Schneider propellers that can provide thrust in any direction for improved maneuverability.
Fresh water generators produce fresh water for domestic and auxiliary use aboard ships by distilling or desalinating sea water. They are essential aboard ships where fresh water consumption can be over 30 tonnes per day. There are two main methods - distillation and reverse osmosis. Distillation involves boiling sea water under vacuum to evaporate it, then condensing the vapor to produce fresh water. Reverse osmosis uses semipermeable membranes to filter out salt and other ions. Fresh water generators recover waste heat from sources like the main engine to economically produce fresh water as needed.
The stern tube is a hollow tube running through the bottom of a ship that contains the propeller shaft. It connects the main engine to the propeller and supports the large weight of the propeller. Stern tubes are designed to keep water from leaking into the ship while allowing the propeller shaft to rotate freely. They contain bearings lubricated with oil or water to reduce friction and prevent leakage between the stern tube and propeller shaft. Modern systems aim to improve lubrication and reduce contamination of lubricants with water for more efficient propulsion.
Pumps are machines that use mechanical action to move fluids by increasing pressure or lifting them against gravity. There are two main types of pumps: positive displacement pumps and centrifugal pumps. Positive displacement pumps work by trapping a fixed amount of fluid and forcing it into the discharge pipe with a piston, plunger, gears, lobes or diaphragm. Centrifugal pumps use centrifugal force from an impeller to accelerate and direct fluid outwards into a discharge pipe. Proper maintenance is important for pump efficiency and performance.
1. The document discusses separation techniques for removing impurities from fuels, including gravity separation and centrifugation.
2. Gravity separation uses settling tanks and centrifuges apply centrifugal force to separate denser components like water and dirt from lighter components like fuel.
3. Centrifugation, or the use of centrifuges, amplifies the effects of gravity through high-speed rotation, allowing for more rapid and continuous separation than gravity alone.
This document provides information about shipboard incinerators. It defines an incinerator as machinery used to burn various wastes generated on ships, such as oily rags and galley waste. It describes typical incinerator features like refractory lining and automatic controls. It provides details on normal incinerator operation procedures, the types of wastes that can be incinerated according to IMO regulations, and emission standards for type approval testing. The document also outlines safety requirements for incinerator design, operation, controls, and fire protection in waste storage spaces.
The crankshaft converts the reciprocating motion of the piston into rotational motion. It consists of journals, crank webs, and crankpins. Crankshafts can be single-piece, shrunk-fit, or welded constructions. Stresses in the crankshaft include bending, twisting, and residual stresses from shrink fitting. Materials are typically carbon steels. Large two-stroke engines use semi-built crankshafts constructed by shrink fitting forged webs and journals. Medium-speed four-stroke engines use forged one-piece crankshafts. Connecting rods transmit force between the piston and crankshaft and help lubricate the bottom end.
This document discusses ship maneuvering systems including rudders, propellers, and steering gears. It describes different types of rudders such as balanced, semi-balanced, and unbalanced rudders. It also discusses factors that affect rudder design and placement including ship size and maneuverability requirements. Additionally, it covers active rudder systems like azimuth thrusters and Voith Schneider propellers that can provide thrust in any direction for improved maneuverability.
The document discusses regulations regarding the treatment and discharge of sewage from ships as outlined in MARPOL Annex IV. It provides details on definitions of sewage, typical sewage generation amounts, treatment methods including mechanical, chemical and biological, and standards for effluent quality and discharge distances. Requirements include having an approved sewage treatment plant and International Sewage Pollution Prevention Certificate when discharging in special areas like the Baltic Sea.
THE PURIFIER: Is correct size gravity disc or dam ring which is responsible for creating an interface between the oil and water.
THE CLARAFIER: Is clarifiers are settling tanks built with mechanical means for continuous removal of solids being deposited by sedimentation.
The ship experiences various stresses from forces both inside and outside the vessel. Static forces include the weight of the ship's structure and cargo as well as external hydrostatic pressure. Dynamic forces arise from the ship's motion in waves and winds and from operating machinery. These forces produce global stresses across the entire ship and local stresses in specific areas. Common types of stress include hogging, sagging, racking, torsion, and stresses from water pressure, dry-docking, and pounding. Localized stresses also occur due to concentrated loads. Proper design is needed to withstand these stresses.
The document discusses heat exchangers used on ships. It describes that heat exchangers transfer heat from one medium to another through direct contact or a separating wall. Common applications on ships include cooling lubricating oil and fresh water using sea water, and heating fuel oil using steam. The two main types are shell and tube exchangers, where one medium flows inside tubes and the other outside the tubes, and plate exchangers, where media flow on either side of corrugated plates. Proper design and maintenance are important for heat exchanger effectiveness and service life.
The document discusses marine air compressors used on ships. It describes the various uses of compressed air on ships, including starting main/auxiliary engines, automation/control, pneumatic tools, fog horns, and more. It provides details on compressor requirements, operating principles, intercooling benefits, maintenance procedures, and common issues like low efficiency.
The document discusses the history and development of ship propulsion systems. It begins with an overview of early paddle wheels and the advantages of propellers over paddle wheels. It then covers the history of propeller development, including Joseph Ressel patenting the ship propeller in 1827. The document discusses various propulsion system types including steam engines, steam turbines, diesel engines, gas turbines, and nuclear reactors. It also provides detailed explanations of propeller geometry, components, blade parts, and terminology.
Displacement compressors use pistons driven by a crankshaft to draw gas into a cylinder and compress it. Screw compressors use a male and female rotor with helical grooves to compress gas by decreasing trapped volume. Dynamic compressors use a rapidly rotating impeller to accelerate gas and a diffuser to convert velocity to pressure. Compressors have many applications including gas feed, refrigeration, pipelines, and aircraft braking systems.
The document discusses the MARPOL regulations governing shipboard incinerators. MARPOL Annex VI regulates incinerator emissions. Incinerators installed after 2000 must be certified to meet the specifications in MEPC Resolution 76(40), have an operations manual, and be operated by trained crew according to the manual. The regulations prohibit burning certain waste and require minimum flue gas temperatures. Incinerators are used to dispose of waste oil, garbage, and sewage, and the document describes standard incinerator features and operating procedures.
The document discusses the separation process onboard a floating production storage and offloading (FPSO) vessel. It explains the key components of the separation module including slug catchers, sand removal systems, high pressure and low pressure separators, pre-heaters, electrostatic coalescers, and transfer pumps. It also provides a diagram of the separation process inside a three-phase separator where well fluids are separated into oil, water, and gas based on gravity and sensors that control discharge valves.
This document provides an overview of oil and gas separation and separator design. It discusses the purpose of separating oil, gas, and water streams and describes key principles of single-stage and multi-stage separation. It also outlines different types of separators, including horizontal and vertical separators. Horizontal separators use gravity to separate liquids from gases and include sections for inlet diversion, liquid collection, gas settling, and mist extraction. Vertical separators operate similarly with inlet diversion and counter-flow of liquids and gases.
This document provides information about boiler surveys. It discusses the reasons for surveys, types of surveys including internal examinations and testing of safety valves. It provides details on survey requirements from regulatory bodies like SOLAS and IACS. Survey preparation steps are outlined, including cleaning, isolating the boiler, and having equipment ready. Various boiler components are also described such as composite boilers, water tube boilers, exhaust gas boilers, and common fittings like sight glasses and safety valves.
Ships Using Different Propulsion Systems Are discussed.The Ships are:
1:KMS BATTLESHIP- BISMARCK
2:QUEEN ELIZABETH-CLASS AIRCRAFT CARRIER
3:USS ENTERPRISE (CVN-65)
Prepared by:Vipin Devaraj,
38Th RS,
Dept Of Ship Technology,
Cusat,INDIA
contact:vipindevaraj94@gmail.com
The document provides guidelines for maintaining a fresh water generator (FWG) on a vessel:
1. Check the salinity alarm monthly to ensure only fresh water enters the fresh water tank.
2. Stop the FWG when approaching contaminated waters to prevent bacterial infection.
3. Open the separator shell and inspect for scale during scheduled maintenance or if production drops.
4. Clean the heating tubes twice a year or when production drops to prevent scale buildup.
Centrifugal pump seals are critical for pump reliability. There are two main types of seals: static seals like gaskets and dynamic seals for moving parts. Proper seal selection depends on the seal environment. For dynamic sealing, packing seals and mechanical seals are commonly used. Packing seals use rings that require lubrication to prevent leaks, while mechanical seals have stationary and rotating rings that form a close running seal with less leakage.
This document discusses ship propulsion systems. It begins by defining key terms related to propeller horsepower, including:
- Brake Horsepower (BHP): Power output at the engine shaft before reduction gears.
- Shaft Horsepower (SHP): Power output after the reduction gears.
- Delivered Horsepower (DHP): Power delivered to the propeller.
- Thrust Horsepower (THP): Power created by the screw/propeller after losses.
It then discusses propeller types, key parts like the hub and blades, and terminology such as diameter, pitch, revolutions per minute, and whether a propeller is right-handed or left-handed. The
The document describes the piping systems on a ship. It discusses the importance of an efficient piping system and provides examples of common piping systems like bilge, ballast, fuel, cooling water, lubrication oil, compressed air, steam, and cargo tank systems. It emphasizes preparing accurate piping plans and diagrams using standardized symbols and labeling key details like pipe sizes, flow directions, and component capacities. Common arrangements for pumping, drainage, overflows, and other aspects of key systems are illustrated with diagrams.
Shaft alignment is the process of positioning two or more rotating shafts so their centerlines are aligned when machines are operating normally. Misalignment can cause damage like abnormal bearing wear. There are several methods to check alignment including using a piano wire or line-of-sight with a telescope. For a piano wire method, the wire is tensioned and distances from it to bearings are measured. For a telescopic method, targets are mounted on stationary points and the telescope is used to align the rotating components by sighting through the targets. Proper shaft alignment is important for reducing vibrations and extending component life.
This document summarizes Schaeffer Precision Alignment's laser tracker services for inspecting steam turbines. They have experience inspecting hydro, gas, and steam turbines for over 260 clients. Their laser tracker technology allows precise inspection and alignment of individual turbine components. Inspections can locate components, monitor movement over time, and ensure reinstallation within tight tolerances. Schaeffer Precision Alignment provides a comprehensive solution for precision turbine maintenance and inspection.
The document discusses regulations regarding the treatment and discharge of sewage from ships as outlined in MARPOL Annex IV. It provides details on definitions of sewage, typical sewage generation amounts, treatment methods including mechanical, chemical and biological, and standards for effluent quality and discharge distances. Requirements include having an approved sewage treatment plant and International Sewage Pollution Prevention Certificate when discharging in special areas like the Baltic Sea.
THE PURIFIER: Is correct size gravity disc or dam ring which is responsible for creating an interface between the oil and water.
THE CLARAFIER: Is clarifiers are settling tanks built with mechanical means for continuous removal of solids being deposited by sedimentation.
The ship experiences various stresses from forces both inside and outside the vessel. Static forces include the weight of the ship's structure and cargo as well as external hydrostatic pressure. Dynamic forces arise from the ship's motion in waves and winds and from operating machinery. These forces produce global stresses across the entire ship and local stresses in specific areas. Common types of stress include hogging, sagging, racking, torsion, and stresses from water pressure, dry-docking, and pounding. Localized stresses also occur due to concentrated loads. Proper design is needed to withstand these stresses.
The document discusses heat exchangers used on ships. It describes that heat exchangers transfer heat from one medium to another through direct contact or a separating wall. Common applications on ships include cooling lubricating oil and fresh water using sea water, and heating fuel oil using steam. The two main types are shell and tube exchangers, where one medium flows inside tubes and the other outside the tubes, and plate exchangers, where media flow on either side of corrugated plates. Proper design and maintenance are important for heat exchanger effectiveness and service life.
The document discusses marine air compressors used on ships. It describes the various uses of compressed air on ships, including starting main/auxiliary engines, automation/control, pneumatic tools, fog horns, and more. It provides details on compressor requirements, operating principles, intercooling benefits, maintenance procedures, and common issues like low efficiency.
The document discusses the history and development of ship propulsion systems. It begins with an overview of early paddle wheels and the advantages of propellers over paddle wheels. It then covers the history of propeller development, including Joseph Ressel patenting the ship propeller in 1827. The document discusses various propulsion system types including steam engines, steam turbines, diesel engines, gas turbines, and nuclear reactors. It also provides detailed explanations of propeller geometry, components, blade parts, and terminology.
Displacement compressors use pistons driven by a crankshaft to draw gas into a cylinder and compress it. Screw compressors use a male and female rotor with helical grooves to compress gas by decreasing trapped volume. Dynamic compressors use a rapidly rotating impeller to accelerate gas and a diffuser to convert velocity to pressure. Compressors have many applications including gas feed, refrigeration, pipelines, and aircraft braking systems.
The document discusses the MARPOL regulations governing shipboard incinerators. MARPOL Annex VI regulates incinerator emissions. Incinerators installed after 2000 must be certified to meet the specifications in MEPC Resolution 76(40), have an operations manual, and be operated by trained crew according to the manual. The regulations prohibit burning certain waste and require minimum flue gas temperatures. Incinerators are used to dispose of waste oil, garbage, and sewage, and the document describes standard incinerator features and operating procedures.
The document discusses the separation process onboard a floating production storage and offloading (FPSO) vessel. It explains the key components of the separation module including slug catchers, sand removal systems, high pressure and low pressure separators, pre-heaters, electrostatic coalescers, and transfer pumps. It also provides a diagram of the separation process inside a three-phase separator where well fluids are separated into oil, water, and gas based on gravity and sensors that control discharge valves.
This document provides an overview of oil and gas separation and separator design. It discusses the purpose of separating oil, gas, and water streams and describes key principles of single-stage and multi-stage separation. It also outlines different types of separators, including horizontal and vertical separators. Horizontal separators use gravity to separate liquids from gases and include sections for inlet diversion, liquid collection, gas settling, and mist extraction. Vertical separators operate similarly with inlet diversion and counter-flow of liquids and gases.
This document provides information about boiler surveys. It discusses the reasons for surveys, types of surveys including internal examinations and testing of safety valves. It provides details on survey requirements from regulatory bodies like SOLAS and IACS. Survey preparation steps are outlined, including cleaning, isolating the boiler, and having equipment ready. Various boiler components are also described such as composite boilers, water tube boilers, exhaust gas boilers, and common fittings like sight glasses and safety valves.
Ships Using Different Propulsion Systems Are discussed.The Ships are:
1:KMS BATTLESHIP- BISMARCK
2:QUEEN ELIZABETH-CLASS AIRCRAFT CARRIER
3:USS ENTERPRISE (CVN-65)
Prepared by:Vipin Devaraj,
38Th RS,
Dept Of Ship Technology,
Cusat,INDIA
contact:vipindevaraj94@gmail.com
The document provides guidelines for maintaining a fresh water generator (FWG) on a vessel:
1. Check the salinity alarm monthly to ensure only fresh water enters the fresh water tank.
2. Stop the FWG when approaching contaminated waters to prevent bacterial infection.
3. Open the separator shell and inspect for scale during scheduled maintenance or if production drops.
4. Clean the heating tubes twice a year or when production drops to prevent scale buildup.
Centrifugal pump seals are critical for pump reliability. There are two main types of seals: static seals like gaskets and dynamic seals for moving parts. Proper seal selection depends on the seal environment. For dynamic sealing, packing seals and mechanical seals are commonly used. Packing seals use rings that require lubrication to prevent leaks, while mechanical seals have stationary and rotating rings that form a close running seal with less leakage.
This document discusses ship propulsion systems. It begins by defining key terms related to propeller horsepower, including:
- Brake Horsepower (BHP): Power output at the engine shaft before reduction gears.
- Shaft Horsepower (SHP): Power output after the reduction gears.
- Delivered Horsepower (DHP): Power delivered to the propeller.
- Thrust Horsepower (THP): Power created by the screw/propeller after losses.
It then discusses propeller types, key parts like the hub and blades, and terminology such as diameter, pitch, revolutions per minute, and whether a propeller is right-handed or left-handed. The
The document describes the piping systems on a ship. It discusses the importance of an efficient piping system and provides examples of common piping systems like bilge, ballast, fuel, cooling water, lubrication oil, compressed air, steam, and cargo tank systems. It emphasizes preparing accurate piping plans and diagrams using standardized symbols and labeling key details like pipe sizes, flow directions, and component capacities. Common arrangements for pumping, drainage, overflows, and other aspects of key systems are illustrated with diagrams.
Shaft alignment is the process of positioning two or more rotating shafts so their centerlines are aligned when machines are operating normally. Misalignment can cause damage like abnormal bearing wear. There are several methods to check alignment including using a piano wire or line-of-sight with a telescope. For a piano wire method, the wire is tensioned and distances from it to bearings are measured. For a telescopic method, targets are mounted on stationary points and the telescope is used to align the rotating components by sighting through the targets. Proper shaft alignment is important for reducing vibrations and extending component life.
This document summarizes Schaeffer Precision Alignment's laser tracker services for inspecting steam turbines. They have experience inspecting hydro, gas, and steam turbines for over 260 clients. Their laser tracker technology allows precise inspection and alignment of individual turbine components. Inspections can locate components, monitor movement over time, and ensure reinstallation within tight tolerances. Schaeffer Precision Alignment provides a comprehensive solution for precision turbine maintenance and inspection.
This document provides instructions for properly aligning coupled machinery. It outlines important checks to perform before starting alignment like ensuring low shaft and coupling runout. It describes taking initial alignment readings and calculating required movement if misalignment is found. The key steps are correcting for radial and axial misalignment separately, then total alignment by adding or removing shims at the machine legs as needed. The final step confirms alignment is within tolerance by taking a last reading. Overall the document stresses performing top-bottom alignment before side-to-side for best results.
Misalignment is probably the most common cause of machinery malfunction. A poorly aligned machine can cost a factory 20% to 30% in machine down time, replacement parts, inventory, and energy consumption. The payback from aligning machinery to extend the operating life and optimize process conditions is very large. At first glance it seems that aligning two mating shafts should be a simple process. In the real world, however, there are many complicating factors. For example, either one or both shafts may be locked or have limited rotation. One or both shafts may float axially. The machine may have a soft or sprung foot at one or more locations along with a soft and/or warped baseplate. The alignment positions may become bolt bound. Keeping in mind that acceptable final alignment is typically less than 2 mils, maintenance professionals often find it very challenging to attain proper alignments.
The Ultimate Tool for Teaching Shaft Alignment
SpectraQuest’s Shaft Alignment Trainer (SAT) is the most comprehensive device on the market for shaft alignment training. It is designed for studying a wide variety of problems that can arise when two shafts are misaligned. It is a hands-on trainer for maintenance professionals. It provides a unique mechanism for studying soft and sprung foot. It is a realistic simulator with a one inch diameter shaft that fits standard couplings. Its modular design facilitates simulation of multiple element drive trains. The SAT is available in a two train and in a three train configuration. Each SAT incorporates two fully adjustable modular units featuring horizontal jack bolts, calibrated and reference dials, and replaceable feet. The three train SAT adds a fixed module which simulates a non-adjustable machine, but, the shaft can be offset and axially floated.
Transcat and Fluke Present: Precision Shaft Alignment Made EasyTranscat
The document discusses precision laser shaft alignment using the Fluke 830 Laser Alignment tool. It provides an overview of the benefits of precision alignment, describes laser alignment principles and the Fluke tool. The Fluke tool allows for quick, easy, and precise alignment in 3 steps: setup, measurement, and diagnosis/correction. It provides intuitive guidance and diagnostic information to correctly align shafts and maximize machine reliability and uptime.
This document discusses different components of ship propulsion and steering systems. It describes three main types of rudders - balanced, unbalanced, and semi-balanced rudders. It also discusses propeller types, including fixed pitch and controllable pitch propellers. Key factors to consider when designing a propeller are discussed as well, such as shaft revolutions, number of blades, wake conditions, diameter, blade area, and geometry.
Estimation of misalignment in bearing shaft by signal processing of acoustic ...IAEME Publication
This document presents research on estimating misalignment in a bearing shaft using signal processing of acoustic signals. The researchers recorded acoustic signals from a test bearing under different levels of induced misalignment. They analyzed the signals using fast Fourier transformation (FFT) and wavelet decomposition. FFT results showed peaks corresponding to rotational frequency harmonics. As misalignment increased, the energy value of the fourth peak also increased. Wavelet decomposition allowed visualization of ball impacts, and analysis of these impacts over time allowed calculation of shaft rotation speed. Overall, the analyses demonstrated that signal processing techniques can effectively estimate misalignment levels in a bearing shaft by examining changes in acoustic signals.
The document discusses the greenhouse effect and how greenhouse gases like carbon dioxide and methane regulate the Earth's temperature. It explains that greenhouse gases in the atmosphere trap heat in a similar way that the glass walls of a greenhouse trap heat, keeping temperatures inside higher than outside temperatures. The greenhouse effect occurs when an increase in greenhouse gases leads to more heat being absorbed by the atmosphere and rising global temperatures.
Volcanoes are formed when molten rock, or magma, flows out of the earth's surface through fissures caused by the movement of tectonic plates. Magma emerges onto the crust of the earth through vents in the asthenosphere. At the summit of a volcano is a crater, which is a funnel-shaped depression. Volcanoes are classified as active, extinct, or dormant based on their eruptive behavior - active volcanoes erupt frequently, extinct volcanoes will not erupt again, and dormant volcanoes were previously active but have not erupted recently but could again in the future.
University Assignment Literacy Assessmentmforrester
Literacy is described as the ability to communicate effectively through reading, writing, speaking and listening. It allows people to make sense of messages in text, pictures, audio and other formats. Literacy is important for every subject as it is required to perform tasks and improve knowledge. Literacy assessments can help identify areas of concern, though not all are diagnostic. A literacy assessment may reflect issues across subjects depending on how it is designed. Suggestions to improve literacy include focusing more on literacy within subjects, using literacy circles to set goals, and allowing more time for exploring literacy in each subject.
Kerajaan Kalingga didirikan oleh pengungsi dari India yang melarikan diri dari penghancuran daerah Kalingga. Ibukotanya dikelilingi pagar kayu dan dipimpin Ratu Shima yang terkenal adil pada abad ke-7. Keturunan Ratu Shima kemudian memimpin kerajaan-kerajaan lain seperti Galuh, Sunda, dan mendirikan Dinasti Sanjaya di Mataram Kuno.
The document discusses diversity and its importance in education. It defines diversity as acceptance and respect of individuals' unique differences along dimensions such as race, gender, beliefs. Celebrating diversity empowers students and promotes their learning by strengthening their connection to the diverse environment. Intolerance stems from lack of familiarity, so schools can reduce it by teaching appropriate behaviors and having students interact from different backgrounds. Support programs also help, like reinforcing positive behaviors and providing intervention groups.
This document is Francis Fairley's resume, which outlines his diverse IT experience including roles in wholesale distribution, retail, and transportation. It details projects he has led such as a $21M Windows 7 upgrade project for over 35,000 customers and implementing HR, finance, and legal systems. The resume also notes his responsibilities helping teams succeed and deepening the practice of project management.
The document outlines an innovative lesson plan about double circulation. It includes the name of the teacher, school, subject, unit, topic, class details, learning objectives, and a proposed classroom procedure. The procedure involves introducing the topic of double circulation, showing animations depicting pulmonary and systemic circulation, engaging students in group discussions to answer related questions, reviewing key concepts, and assigning a follow up activity to create a flow chart of double circulation. The overall goal is for students to develop a factual and conceptual understanding of how blood circulates through the heart twice in what is called double circulation.
This document provides instructions for removing and installing the cylinder head on a Caterpillar 3054 engine. The key steps are:
1. Drain coolant and remove components attached to the cylinder head like the air inlet manifold, exhaust manifold, fuel injection nozzles, and rocker arm assembly.
2. Gradually loosen the 22 cylinder head bolts in reverse tightening order.
3. Attach a lifting device and carefully remove the cylinder head, weighing 41 kg/90 lb. Remove the cylinder head gasket and note dowel pin locations.
4. Check for cylinder head distortion by aligning a straight edge with an installed bolt.
This document provides instructions for removing and installing the valve mechanism cover, rocker shaft, and pushrods on a Caterpillar 3054 engine. Key steps include removing the valve cover nuts and gasket, removing the rocker shaft nuts and brackets to take off the assembly, and installing new seals before reinstalling the removed components in reverse order and tightening to the specified torques.
This document provides instructions for removing and installing the valve mechanism cover, rocker shaft, and pushrods on a Caterpillar 3054 engine. Key steps include removing the valve cover nuts and gasket, removing the rocker shaft nuts and bolts, and removing the pushrods. Reinstallation involves installing new gaskets and seals, lubricating fasteners, and tightening nuts and bolts to the specified torques.
This document provides instructions for removing and installing the valve mechanism cover, rocker shaft, and pushrods on a Caterpillar 3054 engine. Key steps include removing the valve cover nuts and gasket, removing the rocker shaft nuts and bolts, and removing the pushrods. Reinstallation involves installing new seals, lubricating components, and tightening fasteners to the specified torques.
This document provides instructions for removing and installing the cylinder head on a Caterpillar 3054 engine. The key steps are:
1. Drain coolant and remove components attached to the cylinder head like the air inlet manifold, exhaust manifold, fuel injection nozzles, and rocker arm assembly.
2. Gradually loosen the 22 cylinder head bolts in reverse tightening order.
3. Attach a lifting device and carefully remove the cylinder head, weighing 41 kg/90 lb. Remove the cylinder head gasket and note dowel pin locations.
4. Check for cylinder head distortion by aligning a straight edge with an installed bolt.
This document provides instructions for removing and installing the cylinder head on a Caterpillar 3054 engine. The key steps are:
1. Drain coolant and remove components attached to the cylinder head like the air inlet manifold, exhaust manifold, fuel injection nozzles, and rocker arm assembly.
2. Gradually loosen the 22 cylinder head bolts in reverse tightening order.
3. Attach a lifting device and carefully remove the cylinder head, weighing 41 kg/90 lb. Remove the cylinder head gasket and note dowel pin locations.
4. Check for cylinder head distortion by aligning a straight edge with an installed bolt.
Caterpillar cat 444 e backhoe loader (prefix hxb) service repair manual (hxb0...fjjkskekfsmem
This document provides instructions for installing a cylinder head on a Caterpillar C4.4 engine. It includes the following steps:
1. Clean the mating surfaces of the cylinder head and cylinder block. Inspect the cylinder head for distortion.
2. Install guide bolts into the cylinder block and align the cylinder head gasket with the guide bolts and dowel pins.
3. Carefully lower the cylinder head onto the cylinder block and install bolts in the specified tightening sequence.
This document provides instructions for removing and installing various components of a Caterpillar 3054 engine, including the valve cover, rocker shaft, pushrods, and cylinder head. The removal and installation procedures describe loosening specific bolts and nuts in a specified order, removing gaskets and seals, and ensuring proper alignment of components during reassembly.
This document provides instructions for removing and installing various components of a Caterpillar 3054 engine, including the valve cover, rocker shaft, pushrods, and cylinder head. The removal and installation procedures describe loosening specific bolts and nuts in a particular sequence, removing gaskets and seals, and ensuring proper alignment of components during reassembly.
This document provides instructions for removing and installing various components of a Caterpillar 3054 engine, including the valve cover, rocker shaft, pushrods, and cylinder head. The removal and installation procedures describe loosening specific bolts and nuts in a particular sequence, removing gaskets and seals, and ensuring proper alignment of components during reassembly.
This document provides instructions for removing and installing various components of a Caterpillar 3054 engine, including the valve cover, rocker shaft, pushrods, and cylinder head. The removal and installation procedures describe loosening specific bolts and nuts in a particular sequence, removing gaskets and seals, and ensuring proper alignment of components during reassembly.
This document provides instructions for removing and installing various components of a Caterpillar 3054 engine, including the valve cover, rocker shaft, pushrods, and cylinder head. The removal and installation procedures describe loosening specific bolts and nuts in a particular sequence, removing gaskets and seals, and ensuring proper alignment of components during reassembly.
This document provides instructions for removing and installing various components of a Caterpillar 3054 engine, including the valve cover, rocker shaft, pushrods, and cylinder head. The removal and installation procedures describe loosening specific bolts and nuts in a particular sequence, removing gaskets and seals, and ensuring proper alignment of components during reassembly.
Caterpillar cat 444 e backhoe loader (prefix hxb) service repair manual (hxb0...fjsjejfksekmme
1) The document provides installation instructions for a cylinder head on a Caterpillar C4.4 engine.
2) Key steps include cleaning surfaces, installing dowels and gasket, tightening bolts in a specific sequence, and installing components like injectors and glow plugs.
3) Bolts must be tightened to two torque specifications and turned additional degrees to ensure proper installation.
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Caterpillar cat 444 e backhoe loader (prefix hxb) service repair manual (hxb0...fjskekskkemm
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The document provides instructions for removing and installing exhaust manifolds and air inlet manifolds on Caterpillar 3054 engines. It describes removing components like nuts, bolts, manifolds and gaskets in reverse order of installation. It emphasizes keeping parts clean and applying sealant to stud threads before tightening components to the specified torques.
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1. IHC LAGERSMIT Installation and maintenance instructions SUPREME®
stern tube seals
02/05 1
CONTENTS
CHAPTER PAGE
DATA SHEET 2
1. INTRODUCTION 3
2. GENERAL 4
3. INSTALLATION INSTRUCTIONS SUPREME STERN TUBE SEAL 7
4. PUTTING INTO OPERATION 14
5. MAINTENANCE / REPAIRS 16
6. OPTIONAL EXTRA’S 19
ENCLOSURES
WEAR DOWN PROTOCOL
SPARE PARTS / SERVICE
TYPE APPROVAL CLASS. (copy)
ASSEMBLY DRAWING AFT SEAL
ASSEMBLY DRAWING FORWARD SEAL
DRAWING CIRCULATION OILTANK
DRAWING 20 L. OIL TANK
DRAWING LUBRICATION SCHEME
_____________________________________________________________________
_____________________________________________________________________
2. IHC LAGERSMIT Installation and maintenance instructions SUPREME®
stern tube seals
02/05 2
DATA SHEET SUPREME®
SUPREME®
aft seal SUPREME®
forward seal
Size
Type
Serial no
Drawing no
IHC Lagersmit order no
3. IHC LAGERSMIT Installation and maintenance instructions SUPREME®
stern tube seals
02/05 3
1. INTRODUCTION
This manual is for the professional assembly, maintenance and dismantling of the SUPREME®
∗
stern tube seal and is intended for those persons who have to carry out above mentioned tasks.
The products of IHC Lagersmit BV∗∗ have been designed and manufactured to reflect the
technological state of the art. Nevertheless, it cannot be ruled out that danger may arise to:
• Life and limp;
• the product and/or overall plant;
• other aspects.
Make sure the safety instructions given in this manual are carefully observed.
Where needed, the instructions in this manual are supplied with symbols for specified dangers:
: danger to life and limb
: danger to the product and/or the overall plant
: danger to other aspects
In particular, hazards may occur:
• if insufficiently trained personnel manipulates the product;
• if the product is inexpertly installed, operated and serviced;
• if the product is used for other than the intended purposes.
Beside the danger symbols above the next symbol is used in this manual:
: attention to notes
All persons responsible for the operation of the product must:
o be familiar with the contents of this manual;
o have adequate technical qualifications and are authorized to perform the relevant activity.
No modifications to the product are permitted unless the prior approval of IHC Lagersmit is obtained.
The content of this specification is the property of IHC Lagersmit and may not be brought to the
knowledge of third parties either in the original form or by reproduction. Although the information in
this manual has been checked and reproduced as carefully as possible no responsibility can be
accepted for faults and/or incompleteness. IHC Lagersmit reserves the right to alter the information
given in this manual without prior warning.
∗
SUPREME is a registrated trademark
∗∗
IHC Lagersmit BV, abbreviated IHC Lagersmit, is a member of the IHC Holland Merwede Group.
4. IHC LAGERSMIT Installation and maintenance instructions SUPREME®
stern tube seals
02/05 4
2. GENERAL
2.1 Product description*
The SUPREME stern tube seal system consists of a SUPREME aft seal, an aft bearing
bush, a forward bearing bush and a SUPREME forward seal. The SUPREME stern tube
seals are used for sealing the stern tube at the points where the shaft penetrates. The oil
level in the stern tube tank should be 3 to 4 meters above the loaded water-line (LWL).
Figure 2.1 shows an example of a complete stern tube system.
Figure 2.1: Example of a complete stern tube system
2.1.1 The SUPREME aft seal
The aft seal exists of three rubber lip seals which are clamped in the house parts. The lip
seals are sealing at a corrosion proof liner. The purpose of the aft seal is to prevent (sea)
water ingress and oil outlet from the stern tube.
The lip seals can be replaced without removing the propeller or withdrawing the propeller
shaft.
* A typical model is described. Consult the appropriate assembly drawing for detailed information.
5. IHC LAGERSMIT Installation and maintenance instructions SUPREME®
stern tube seals
02/05 5
Figure 2.2: SUPREME aft seal (standard design)
The SUPREME aft seal is also available in a fully split execution, called the SUPREME 2/2.
This seal affords the possibility to replace the lip seals and the liner without removing the
propeller or withdrawing the propeller shaft. The principal of sealing, materials, etc. is equal
to that of the standard SUPREME aft seal.
This manual describes instructions belonging to the standard SUPREME seals.
Additional instructions regarding SUPREME 2/2 aft seals will be stated
separately.
In order to protect the liner against corrosion IHC Lagersmit recommends a
grounded propeller shaft.
2.1.2 Bearing bushes
The bearing bushes of IHC Lagersmit are made of cast iron lined with a white metal bearing
surface. The bearing bushes shown in figure 2.3 must be lubricated with lubrication oil only.
Figure 2.3: Oil lubricated bearing bushes
6. IHC LAGERSMIT Installation and maintenance instructions SUPREME®
stern tube seals
02/05 6
2.1.3 The SUPREME forward seal
The forward seal exists of two lip seals which are clamped in the house parts. The lip seals
are sealing at a cast iron liner which is provided with a ceramic surface. This liner is
connected to the shaft with the aid of a splitted clamping ring. The purpose of the seal is to
prevent oil outlet from the stern tube. The lip seals are lubricated with oil from a circulation
tank. The rotation of the propeller shaft together with the presence of a scraper in the seal
forces the oil to circulate.
Figure 2.4: SUPREME forward seal (standard design)
2.2 Handling and storing of the product
If the product is stored for a longer period, the product has to be stored in a clean and dry
place.
The seal must be protected against any kind of damage. IHC Lagersmit recommends storing
the product in the original packaging.
7. IHC LAGERSMIT Installation and maintenance instructions SUPREME®
stern tube seals
02/05 7
3. INSTALLATION INSTRUCTIONS SUPREME STERN TUBE SEAL*
The following precautions must be taken before commencing the installation of the SUPREME stern
tube seals.
Precautions:
1. Check the shaft and stern tube for damage and/or dirt;
The shaft and stern tube should be free of imperfections such as dirt and/or damage/burs.
2. Check the goods for transport damage and/or incompleteness;
If any transport damage is noted and/or anything is missing contact IHC Lagersmit.
3. Check the connection sizes;
If the connection sizes do not agree with those in the drawing the stern tube seal cannot be
fitted. In that case consult IHC Lagersmit.
4. Check the pipes and oil tank(s) for internal dirt, damages and leakages
The pipes and tank(s) should be free of imperfections such as dirt, damages and leakages.
3.1 Installing the stern tube aft seal
The SUPREME aft seal is delivered completely assembled, including brackets. In order to
prevent damage to the liner as well as the lip seals, the complete seal must slid onto the
propeller shaft as a unit, including the brackets.
The shaft may not be driven when work is carried out on the seal.
The brackets are not suitable for lifting purposes.
Install:
1. Take the precautions mentioned;
2. Oil the shaft;
3. Fit the complete stern tube seal according the assembly drawing;
Mind the correct position of the gaskets and the bleed plug.
With respect to the alignment don’t secure the bolts of the flange ring yet.
Remove the brackets!
If the brackets are not removed the installation will cause
damage when the seal is put into operation.
The brackets do not determine the built-in length.
4. Couple the propeller shaft and fit the propeller
* Instructions regarding bearing bushes will not be dealt with in this manual.
8. IHC LAGERSMIT Installation and maintenance instructions SUPREME®
stern tube seals
02/05 8
5. Check the alignment of the seal according figure 3.1;
Fig. 3.1: Checking the alignment
Measurements must be taken in horizontal and vertical direction. The maximum
allowed difference in measurement A – B depends of the size on the SUPREME
seal, according table 3.1.
SUPREME size
Maximum allowed difference measurements
A1 – B1 and A2 – B2
155 t/m 300 0,35 mm
330 t/m 500 0,40 mm
530 t/m 710 0,45 mm
750 t/m 900 0,50 mm
Table 3.1
6. Check the built-in length according figure 3.2;
Fig. 3.2: Checking the built-in length
The built-in length depends on the size of the SUPREME stern tube seal and is
shown at the assembly drawing.
9. IHC LAGERSMIT Installation and maintenance instructions SUPREME®
stern tube seals
02/05 9
7. Check the run-out of the liner according figure 3.3
Fig. 3.3: Checking the run-out
The maximum allowed shaft movement depends on the size of the SUPREME seal.
The next table shows the maximum allowed clock gauge deflections:
SUPREME size Maximum allowed clock gauge deflection
155 t/m 300 0,09 mm
330 t/m 500 0,12 mm
530 t/m 900 0,15 mm
Table 3.2: Maximum allowed clock gauge deflections
8. Fasten and secure the bolts.
Table 3.3 shows the torque moments. The bolts need to be redrawed after fitting.
The bolts have to be secured with the help of securing wire according figure 3.4.
Bolt
Torque moment
Aft seal
Torque moment
Forward seal
M8 20 [Nm] 22 [Nm]
M10 45 [Nm] 44 [Nm]
M12 75 [Nm] 74 [Nm]
M16 120 [Nm] 165 [Nm]
M20 205 [Nm] 314 [Nm]
M24 354 [Nm] 549 [Nm]
Table 3.3 : Torque moments
10. IHC LAGERSMIT Installation and maintenance instructions SUPREME®
stern tube seals
02/05 10
Additional instructions for SUPREME 2/2 aft seals:
Bolts have to be tightened uniformly and in order 1 – 2 – 3 – … as shown in figure
3.4.
Figure 3.4: * Tightening order (seen against the flange of a liner 2/2)
* Way of securing
3.2 Zero wear down measurement
The wear down of the aft bearing bush can be determinated without removing the aft seal by
carrying out a zero wear down measurement. This measurement has to be carried out
before launch. The value has to be recorded at the wear down protocol attached in this
manual. This measurement has to be carried out regularly, e.g. at dry-dockings. By
comparing the values to the zero wear down value, it can be determined whether the bearing
clearance is still acceptable.
11. IHC LAGERSMIT Installation and maintenance instructions SUPREME®
stern tube seals
02/05 11
Carrying out the zero wear down measurement:
The bearing wear down is to be determined with the use of the vernier callipers and the
measuring plug as shown in figure 3.5.
Figure 3.5: Zero wear down measurement
1. Put the propeller blade #1 at TOP position;
2. Remove the plug and sealing ring from the end supporting ring;
3. Screw the measuring plug into the thread hole;
4. Determine dimension A with the use of the vernier callipers;
5. Write down the measured value at the wear down protocol;
6. Remove the measuring plug and replace the sealing ring and plug.
Use a new sealing ring after each wear down measurement!
3.3 Installing the stern tube forward seal
The SUPREME forward seal is delivered completely assembled, including brackets. In order
to prevent damage to the liner as well as the lip seals, the complete seal must slid onto the
propeller shaft as a unit, including the brackets.
The shaft may not be driven when work is carried out on the seal.
The brackets are not suitable for lifting purposes.
12. IHC LAGERSMIT Installation and maintenance instructions SUPREME®
stern tube seals
02/05 12
Installing:
1. Take the precautions written at page 7 of this manual;
2. Oil the shaft;
3. Slid the complete stern tube seal, including the gasket, brackets and O-ring onto the
shaft;
4. Fit the seal against the stern tube;
Mind the correct position of the gasket and the bleed plug.
With respect to the alignment do not fasten the bolts of the flange ring yet.
5. Couple the propeller shaft;
6. Remove the brackets;
If the brackets are not removed the installation will cause
damage when the seal is put into operation.
The brackets do not prescribe the built-in length.
7. Adjust and mount the clamping ring onto the propeller shaft;
The adjusting size is given in table 3.4.
Adjusting
size [mm]
Adjusting
size [mm]
Adjusting
size [mm]
SUPREME
Size
Min. Max.
SUPREME
Size
Min. Max.
SUPREME
Size
Min. Max.
155 to 190 57 67 355 to 380 79 89 670 130 145
200 to 220 62 72 400 to 500 84 99 710 to 750 120 135
240 to 260 67 77 530 89 104 800 to 850 123 138
280 69 79 560 to 600 90 105 900 138 153
300 to 330 74 84 630 105 120 950 to 1000 148 163
Table 3.4: Adjusting sizes
13. IHC LAGERSMIT Installation and maintenance instructions SUPREME®
stern tube seals
02/05 13
With respect to the possibility to shove the liner aside to the stern
tube the maximum adjusting size should be realized at new-
building.
8. Fit the liner against the clamping ring;
9. Check the alignment and run-out of the liner;
See paragraph 3.1 (instructions 5 and 7)
10. Fasten the bolts;
See table 3.3 for the required torque moments
11. Fit and connect the lubrication tank according to the drawing attached in this manual
(if applicable);
At all times the seals must be protected against grinding dust and/or welding
spatter.
Wrapping of the seals for example with fibreglass cloths is recommended by
IHC Lagersmit.
14. IHC LAGERSMIT Installation and maintenance instructions SUPREME®
stern tube seals
02/05 14
4. PUTTING INTO OPERATION
For putting the propulsion installation into operation see the concerned manuals of the supplier(s) of
the propulsion installation. As for the stern tube seals and bearings the next actions must be taken:
1. Filling the stern tube and stern tube tank;
2. Filling the circulation tank of the forward seal;
3. Filling the additional lubrication oil tank(s). (if applicable)
Observe the safety and environmental rules when filling the tanks.
4.1 Filling the stern tube and stern tube tank
The stern tube and stern tube tank should be filled with lubrication oil* up to the maximum
level. To prevent pressure increase the stern tube must be aerated continuously.
4.2 Filling the circulation tank of the forward seal
The next actions must be taken:
1. Remove the filler plug of the circulation tank;
2. Fill the circulation tank with lubrication oil*;
The circulation tank should be filled up to the upper sight glass
3. Fit the filler plug.
4.3 Filling the additional tank(s) (if applicable)
The next actions must be taken:
1. Open the valve between the additional tank and the aft seal;
2. Remove the bleed plug of the aft seal;
3. Remove the filler plug of the additional tank;
* For oil specifications see paragraph 4.4
15. IHC LAGERSMIT Installation and maintenance instructions SUPREME®
stern tube seals
02/05 15
4. Fill the additional tank with lubrication oil;
The additional tank should be filled up until the oil is coming out of the bleed hole of
the aft seal. Because there is no counter pressure the water repellent seals may
loose some oil. For oil specifications see paragraph 4.4.
5. Fit the bleed plug;
6. Close the valve; (see the lubrication scheme in the enclosure)
The valve must be opened after launch.
7. Fit the filler plug.
4.4 Oil specifications
Mineral lubrication oil can be used, provided it is compatible with the next properties:
- ISO VG 68 … ISO VG 320;
- Temperature range: -20 … 120 °C.
Often lubrication oil class SAE 30 / 40 is used.
The lubrication oil may not be polluted.
When the use of specific oil, for example biological-oil, is desired, please contact the oil
supplier concerned.
The installation is ready for start-up after removing the protection cloths of the
seal.
Keep one’s distance to the shaft during start-up!
16. IHC LAGERSMIT Installation and maintenance instructions SUPREME®
stern tube seals
02/05 16
5. MAINTANANCE / REPAIRS
The following inspections / actions should be taken periodically:
Periodical Act
Weekly Checking the oil levels (5.1)
Half-yearly Refreshing the lub. oil in the circulation tank of the forward seal
Each docking Measuring the wear down (5.2)
Removing the distance ring (if fitted) (5.3.1.1)
Machining the liner (5.3.1.2)
Overhaul of the
aft seal (5.3.1)
Shortening and fitting the springs of the lip seals (5.3.1.3)
Points of interest at
overhaul
Overhaul of the forward seal (5.3.2)
5.1 Weekly maintenance
Checking the oil level:
At normal operation conditions seals will have little oil consumption. This consumption
depends on a large amount of factors. For instance the size, peripheral velocity,
misalignment, viscosity of the oil, temperature and conditions of the lip seals/liner have a
great influence. Weekly the oil levels in the circulation tank of the forward seal, the stern tube
tank and additional oil tanks need to be checked and filled if necessary.
5.2 Each docking
Measuring the wear down:
Before starting the work the bearing bush wear down needs to be measured. The way of
measuring is the same as the zero wear down measurement as described in paragraph 3.2.
For the maximum allowed bearing clearance contact the concerned classification society.
After the work the zero wear down measurement needs to be redone.
5.3 Points of interest at overhaul
The lip seals can be replaced without removing the propeller or withdrawing the propeller
shaft.
Gluing the lip seals in situ can only be done if the stern tube is free of
oil.
In the event of repairs IHC Lagersmit recommends to renew the lip
seals and other “soft” materials like rubber rings and gaskets.
Overhauling SUPREME seals demands specialistic skills / tools and
therefore needs to be done by a service engineer of IHC Lagersmit or
by a service engineer of a recognized by IHC Lagersmit service station
17. IHC LAGERSMIT Installation and maintenance instructions SUPREME®
stern tube seals
02/05 17
5.3.1 Overhaul of the aft seal
In the event of running spurs at the liner there are several options:
5.3.1.1 Removing the distance ring (if fitted)
After removing the distance ring the housing of the aft seal can be shoved aside to
the stern tube. This way new running surfaces are achieved for the lip seals.
5.3.1.2 Machining the liner
When the distance ring has been removed earlier (5.3.1.1) the running surface of
the liner can be turned and/or ground down. The finish should be pitch free. The
roughness (Ra) must be between 0.2 and 0.8 µm.
The spring of the lip seal which will run on a machined down surface should be
shortened according 5.3.1.3
Figure 5.1: Machining the liner
Table 5.1 shows the maximum diameter reduction and the shortened spring length
by 1 mm diameter reduction:
SUPREME size
(Dnominal)
Pmax
(Max. diam. reduction)
Shortened spring length by 1 mm
diameter reduction (see 5.3.1.3)
155 t/m 200 1,5 mm 20 mm
220 t/m 240 1,6 mm 25 mm
260 t/m 280 1,6 mm 30 mm
300 t/m 355 1,6 mm 35 mm
380 t/m 450 1,7 mm 40 mm
480 t/m 530 1,8 mm 45 mm
560 t/m 600 1,9 mm 50 mm
630 t/m 710 2,0 mm 55 mm
750 t/m 800 2,1 mm 60 mm
850 t/m 900 2,1 mm 65 mm
Table 5.1: Maximum diameter reduction / Shortened spring length by 1 mm diameter reduction.
Example: The running surface diameter of a liner size 420 is machined with
1.3 mm to Ø 418.7 mm. This means that the spring must be
shortened to: 1.3 * 40 = 52 mm.
18. IHC LAGERSMIT Installation and maintenance instructions SUPREME®
stern tube seals
02/05 18
5.3.1.3 Shortening the springs of the lip seal
The springs of the lip seals can be shortened:
1. Remove the spring;
Screw the spring ends loose by turning the conical spring end left.
2. Shorten the spring;
See table 5.1. for the right length.
NOTE: Do not cut off the conical spring end.
3. Make the spring connection;
Turn the conical spring end to the right into the other spring end.
4. Fit the spring on the lip seal.
5.3.2. Overhaul of the forward seal;
Putting the ship into dock is not always necessary for overhauling the forward seal.
Before such overhaul can take place be ensured the aft seal is watertight.
19. IHC LAGERSMIT Installation and maintenance instructions SUPREME®
stern tube seals
02/05 19
6. OPTIONAL EXTRAS
To extend the life of the stern tube seal the SUPREME seal can be fitted with a variety of optional
extras.
1 Rubber material
The lip seals can be made from heat
resistant and stable FPM (Viton®
) rubber in
situations of heavy loads.
6 Springs
The lip seals can be fitted with Hastelloy®
springs. These are better resistant to
corrosion than the standard used stainless
steel springs.
2 Wire winder
Fitting a stainless steel split (2/2) wire
winder prevents thin (fishing) lines being
wound onto the liner.
7 Wear resistant surface
A ceramic or hard metal layer can be
applied to the liner. This reduces the wear
and tear of the lip seals in the liner.
3 Net cutters
Stainless steel net cutters can be fitted on
the rope guard over the overlapping part on
the propeller hub.
8 Static sealing
Fixed propellers can be exchanged without
loss of lubrication oil form the stern tube, if
an O-ring is present between the liner and
the propeller shaft.
4 Cathodic protection
Fitting a sacrificial anode to the liner itself
offers maximum resistance to corrosion of
the liner.
5 Dirt barrier
The ingress of sand particles and other
foreign matter can be avoided by using a dirt
barrier. This rubber dirt barrier is clamped
onto the liner using 2 taut stainless steel
springs.
9 Distance ring
The SUPREME in its standard design can
be fitted with a divisible distance ring. This
extends the life of the aft seal. Removal of
this ring enables the housing to be removed
in relation to the liner with the result that
new sealing surfaces are created for new
rubber lip seals. The spacer ring in fully split
execution (2/2) can also be supplied.
20. IHC LAGERSMIT Installation and maintenance instructions SUPREME®
stern tube seals
02/05 20
WEAR DOWN PROTOCOL
21. IHC LAGERSMIT Installation and maintenance instructions SUPREME®
stern tube seals
02/05 21
SPARE PARTS / SERVICE
To ensure that the correct parts are supplied the following information must be provided on the order:
1. The information on the data sheet on page 2 of this manual;
2. Description of the required parts;
3. Part number and/or code number of the required parts;
4. Quantity, desired delivery time and sending information of the required parts.
Besides the required information for ordering spare parts the following information should be
provided for ordering a service engineer:
1. Place of docking;
2. Desired starting date.
Orders for spare parts and /or service engineer should be addressed to:
IHC Lagersmit BV
P.O. Box 5
2960 AA KINDERDIJK
Holland
Telephone : +31 (0) 78 69 10 472
Service telephone : +31 (0) 6 539 35 653 (24 h accessible)
Telefax : +31 (0) 78 69 10 477
E-mail : info@ihclagersmit.com
Website : www.ihclagersmit.com