The document provides instructions for disassembling and inspecting various engine components of a 304D CR Mini Excavator including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. The disassembly sequence and inspection steps are described in detail along with acceptable tolerance limits for various components. Dismantling is to be done in the specified order and all gaskets and seals replaced during reassembly.
Caterpillar Cat 303.5 D Mini Excavator (Prefix RHP) Service Repair Manual Ins...yan77xunhao
This document provides instructions for disassembling and inspecting various engine components of a 303.5 D Mini Excavator powered by an S3Q2 engine. The components include the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. Detailed steps are provided to remove each component, including any necessary safety notes. Measurement standards are given to inspect for excessive wear or damage that would require replacement of parts.
Caterpillar cat 303.5 d mini excavator (prefix rhp) service repair manual (rh...fjsjekdmmeme
The document provides instructions for disassembling and inspecting components of a 303.5 D Mini Excavator engine, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. The steps include removing parts like the crankshaft pulley, timing gear case, idler gear, oil pan, piston rings, piston pin, and main bearing caps. Technicians are directed to inspect parts for wear and damage when disassembled and to measure specifications like backlash, end play, and clearances and replace parts if limits are exceeded. Safety notes and cautions are provided throughout the procedure.
Caterpillar Cat 303.5 D Mini Excavator (Prefix RHP) Service Repair Manual (RH...jdjkskmikdkmd
The document provides instructions for disassembling and inspecting components of a 303.5 D Mini Excavator engine, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. The steps include removing parts like the crankshaft pulley, timing gear case, idler gear, oil pan, piston rings, piston pin, and main bearing caps. Tolerances and limits are provided for measurements of components like gear backlash, end play, and clearance. Technicians are advised to inspect parts for wear and damage during disassembly.
Caterpillar cat 303.5 d mini excavator (prefix rhp) service repair manual (rh...fikskkdmmd1
This document provides instructions for disassembling and inspecting various engine components of a 303.5 D Mini Excavator powered by an S3Q2 engine. The components include the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. Detailed steps are provided to remove each component, including any necessary safety notes. Measurement standards are listed to inspect for excessive wear or damage that would require replacement of parts.
Caterpillar cat 303.5 d mini excavator (prefix rhp) service repair manual (rh...fjskekfseik
This document provides instructions for disassembling and inspecting various engine components of a 303.5 D Mini Excavator powered by an S3Q2 engine. The components include the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. Detailed steps are provided to remove each component, including any necessary safety notes. Measurement standards are given to inspect for excessive wear or damage that would require replacement of parts.
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The document provides instructions for disassembling and inspecting various engine components of a 303.5C Mini Hydraulic Excavator, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. It lists the components in their order of disassembly and provides illustrations showing how to remove each part. Specifications for measuring component wear limits are also provided to determine if parts need replacing.
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This document provides instructions for disassembling and inspecting various engine components of a Caterpillar 303.5C mini hydraulic excavator, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. The multi-step procedures describe removing each component and inspecting it for wear, damage, or other issues. Clear illustrations are included to show the components and disassembly/inspection process. Tolerances and limits are provided for measuring component wear.
Caterpillar Cat 303.5C CR Mini Hydraulic Excavator (Prefix DMY) Service Repai...uddksemd8ud
The document provides instructions for disassembling and inspecting various engine components of a 303.5C Mini Hydraulic Excavator, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. It lists the components in their order of disassembly and provides illustrations showing how to remove each part. Specifications for measuring component wear limits are also provided to determine if parts need replacing.
Caterpillar Cat 303.5 D Mini Excavator (Prefix RHP) Service Repair Manual Ins...yan77xunhao
This document provides instructions for disassembling and inspecting various engine components of a 303.5 D Mini Excavator powered by an S3Q2 engine. The components include the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. Detailed steps are provided to remove each component, including any necessary safety notes. Measurement standards are given to inspect for excessive wear or damage that would require replacement of parts.
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The document provides instructions for disassembling and inspecting components of a 303.5 D Mini Excavator engine, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. The steps include removing parts like the crankshaft pulley, timing gear case, idler gear, oil pan, piston rings, piston pin, and main bearing caps. Technicians are directed to inspect parts for wear and damage when disassembled and to measure specifications like backlash, end play, and clearances and replace parts if limits are exceeded. Safety notes and cautions are provided throughout the procedure.
Caterpillar Cat 303.5 D Mini Excavator (Prefix RHP) Service Repair Manual (RH...jdjkskmikdkmd
The document provides instructions for disassembling and inspecting components of a 303.5 D Mini Excavator engine, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. The steps include removing parts like the crankshaft pulley, timing gear case, idler gear, oil pan, piston rings, piston pin, and main bearing caps. Tolerances and limits are provided for measurements of components like gear backlash, end play, and clearance. Technicians are advised to inspect parts for wear and damage during disassembly.
Caterpillar cat 303.5 d mini excavator (prefix rhp) service repair manual (rh...fikskkdmmd1
This document provides instructions for disassembling and inspecting various engine components of a 303.5 D Mini Excavator powered by an S3Q2 engine. The components include the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. Detailed steps are provided to remove each component, including any necessary safety notes. Measurement standards are listed to inspect for excessive wear or damage that would require replacement of parts.
Caterpillar cat 303.5 d mini excavator (prefix rhp) service repair manual (rh...fjskekfseik
This document provides instructions for disassembling and inspecting various engine components of a 303.5 D Mini Excavator powered by an S3Q2 engine. The components include the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. Detailed steps are provided to remove each component, including any necessary safety notes. Measurement standards are given to inspect for excessive wear or damage that would require replacement of parts.
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The document provides instructions for disassembling and inspecting various engine components of a 303.5C Mini Hydraulic Excavator, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. It lists the components in their order of disassembly and provides illustrations showing how to remove each part. Specifications for measuring component wear limits are also provided to determine if parts need replacing.
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This document provides instructions for disassembling and inspecting various engine components of a Caterpillar 303.5C mini hydraulic excavator, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. The multi-step procedures describe removing each component and inspecting it for wear, damage, or other issues. Clear illustrations are included to show the components and disassembly/inspection process. Tolerances and limits are provided for measuring component wear.
Caterpillar Cat 303.5C CR Mini Hydraulic Excavator (Prefix DMY) Service Repai...uddksemd8ud
The document provides instructions for disassembling and inspecting various engine components of a 303.5C Mini Hydraulic Excavator, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. It lists the components in their order of disassembly and provides illustrations showing how to remove each part. Specifications for measuring component wear limits are also provided to determine if parts need replacing.
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This document provides instructions for disassembling and inspecting various engine components of a Caterpillar 303.5C mini hydraulic excavator, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. The multi-step procedures describe removing each component and inspecting it for wear, damage, or abnormal conditions based on standard measurements. Illustrations accompany each section to show the component removal process.
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This document provides instructions for disassembling and inspecting various engine components of a Caterpillar 303.5C mini hydraulic excavator, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. The multi-step procedures describe removing each component and inspecting it for wear, damage, or abnormal conditions based on standard measurements. Illustrations are included to show the disassembly sequence and specific removal steps.
Caterpillar cat 303.5 c cr mini hydraulic excavator (prefix dmy) service repa...fjsjekdmmeme
The document provides instructions for disassembling and inspecting various engine components of a 303.5C Mini Hydraulic Excavator, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. It lists the components in their order of disassembly and provides illustrations showing how to remove each part. Specifications for measuring component wear limits are also provided to determine if parts need replacing. Safety notes are included throughout to warn of potential dangers during disassembly.
Caterpillar cat 303.5 c cr mini hydraulic excavator (prefix dmy) service repa...fjskekfseik
This document provides instructions for disassembling and inspecting various engine components of a Caterpillar 303.5C mini hydraulic excavator, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. The multi-step procedures describe removing each component and inspecting it for wear, damage, or other issues. Clear illustrations are included to show the disassembly sequence and processes. Tolerances and limits are provided for measuring component wear and end play.
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This document provides instructions for disassembling and inspecting various engine components of a Caterpillar 303.5C mini hydraulic excavator, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. The multi-step procedures describe removing each component and inspecting it for wear, damage, or other issues. Clear illustrations are included to show the components and disassembly/inspection process. Tolerances and limits are provided for measuring component wear.
Caterpillar cat 303.5 c cr mini hydraulic excavator (prefix dmy) service repa...fikskkdmmd1
The document provides instructions for disassembling and inspecting various engine components of a 303.5C Mini Hydraulic Excavator, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. It lists the components in their order of disassembly and provides illustrations showing how to remove each part. Specifications for measuring component wear limits are also provided to determine if parts need replacing.
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This document provides instructions for disassembling and inspecting various engine components of a 303C CR Mini Hydraulic Excavator, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. It outlines the disassembly sequence and order of removal for each part, and includes illustrations showing how to measure specifications like backlash, end play, and clearances. Technicians are directed to inspect parts for wear and damage during disassembly and replace worn components.
Caterpillar cat 303 c cr mini hydraulic excavator (prefix bxt) service repair...fikskkdmmd1
This document provides instructions for disassembling and inspecting various engine components of a 303C CR Mini Hydraulic Excavator, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. The multi-step procedures describe how to remove each component and inspect it for wear and damage based on specified limits. Illustrations are included to clarify the disassembly and inspection process for each engine part.
Caterpillar cat 303 c cr mini hydraulic excavator (prefix bxt) service repair...fjskekfseik
This document provides instructions for disassembling and inspecting various engine components of a 303C CR Mini Hydraulic Excavator, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. The multi-step procedures describe how to remove each component and inspect it for wear and damage based on specified limits. Illustrations accompany each section to show the disassembly sequence and key parts.
Caterpillar cat 303 c cr mini hydraulic excavator (prefix bxt) service repair...fjsjekdmmeme
This document provides instructions for disassembling and inspecting various engine components of a 303C CR Mini Hydraulic Excavator, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. It outlines the disassembly sequence and steps to remove each part, and provides illustrations. Tolerances and limits are provided for inspecting components like gears, bearings, and shaft ends to determine if replacement is needed.
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Caterpillar Cat 305C CR Mini Hydraulic Excavator (Prefix HWJ) Service Repair ...jdjkskmikdkmd
The document provides instructions for disassembling and inspecting various engine components of a 305C CR Mini Hydraulic Excavator, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. It lists the components in their disassembly sequence and provides illustrations and instructions for removing each part. Tolerances and limits are provided for measuring various components like gear backlash, end play, and clearance.
Caterpillar cat 305 c cr mini hydraulic excavator (prefix hwj) service repair...fjskekfseik
This document provides instructions for disassembling and inspecting components of a S4Q2-T engine, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. The multi-step procedures describe removing each component, measuring specifications, and inspecting parts for wear and damage. Replacement is recommended if measurement limits are exceeded. Cautions are provided regarding part identification and handling.
Caterpillar cat 305 c cr mini hydraulic excavator (prefix hwj) service repair...fikskkdmmd1
The document provides instructions for disassembling and inspecting various engine components of a 305C CR Mini Hydraulic Excavator, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. It lists the components in their disassembly sequence and provides illustrations and instructions for removing each part. Tolerances and limits are provided for measuring various components like gear backlash, end play, and clearance.
Caterpillar cat 305 c cr mini hydraulic excavator (prefix hwj) service repair...cdfvvv1
This document provides instructions for disassembling and inspecting components of a S4Q2-T engine, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. The multi-step procedures describe removing each component, measuring specifications, and inspecting parts for wear and damage. Replacement is recommended if measurement limits are exceeded. Cautions are provided regarding part identification and handling.
Caterpillar Cat 303.5C CR Mini Hydraulic Excavator (Prefix DMY) Service Repai...yan77xunhao
This document provides instructions for disassembling and inspecting various engine components of a Caterpillar 303.5C mini hydraulic excavator, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. The multi-step procedures describe removing each component and inspecting it for wear, damage, or abnormal conditions based on standard measurements. Illustrations accompany each section to show the component removal process.
Caterpillar Cat 303.5C CR Mini Hydraulic Excavator (Prefix DMY) Service Repai...f7djidksmd3e
This document provides instructions for disassembling and inspecting various engine components of a Caterpillar 303.5C mini hydraulic excavator, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. The multi-step procedures describe removing each component and inspecting it for wear, damage, or abnormal conditions based on standard measurements. Illustrations are included to show the disassembly sequence and specific removal steps.
Caterpillar cat 303.5 c cr mini hydraulic excavator (prefix dmy) service repa...fjsjekdmmeme
The document provides instructions for disassembling and inspecting various engine components of a 303.5C Mini Hydraulic Excavator, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. It lists the components in their order of disassembly and provides illustrations showing how to remove each part. Specifications for measuring component wear limits are also provided to determine if parts need replacing. Safety notes are included throughout to warn of potential dangers during disassembly.
Caterpillar cat 303.5 c cr mini hydraulic excavator (prefix dmy) service repa...fjskekfseik
This document provides instructions for disassembling and inspecting various engine components of a Caterpillar 303.5C mini hydraulic excavator, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. The multi-step procedures describe removing each component and inspecting it for wear, damage, or other issues. Clear illustrations are included to show the disassembly sequence and processes. Tolerances and limits are provided for measuring component wear and end play.
Caterpillar Cat 303.5C CR Mini Hydraulic Excavator (Prefix DMY) Service Repai...jdjkskmikdkmd
This document provides instructions for disassembling and inspecting various engine components of a Caterpillar 303.5C mini hydraulic excavator, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. The multi-step procedures describe removing each component and inspecting it for wear, damage, or other issues. Clear illustrations are included to show the components and disassembly/inspection process. Tolerances and limits are provided for measuring component wear.
Caterpillar cat 303.5 c cr mini hydraulic excavator (prefix dmy) service repa...fikskkdmmd1
The document provides instructions for disassembling and inspecting various engine components of a 303.5C Mini Hydraulic Excavator, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. It lists the components in their order of disassembly and provides illustrations showing how to remove each part. Specifications for measuring component wear limits are also provided to determine if parts need replacing.
Caterpillar cat 303 c cr mini hydraulic excavator (prefix bxt) service repair...cdfvvv1
This document provides instructions for disassembling and inspecting various engine components of a 303C CR Mini Hydraulic Excavator, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. It outlines the disassembly sequence and order of removal for each part, and includes illustrations showing how to measure specifications like backlash, end play, and clearances. Technicians are directed to inspect parts for wear and damage during disassembly and replace worn components.
Caterpillar cat 303 c cr mini hydraulic excavator (prefix bxt) service repair...fikskkdmmd1
This document provides instructions for disassembling and inspecting various engine components of a 303C CR Mini Hydraulic Excavator, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. The multi-step procedures describe how to remove each component and inspect it for wear and damage based on specified limits. Illustrations are included to clarify the disassembly and inspection process for each engine part.
Caterpillar cat 303 c cr mini hydraulic excavator (prefix bxt) service repair...fjskekfseik
This document provides instructions for disassembling and inspecting various engine components of a 303C CR Mini Hydraulic Excavator, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. The multi-step procedures describe how to remove each component and inspect it for wear and damage based on specified limits. Illustrations accompany each section to show the disassembly sequence and key parts.
Caterpillar cat 303 c cr mini hydraulic excavator (prefix bxt) service repair...fjsjekdmmeme
This document provides instructions for disassembling and inspecting various engine components of a 303C CR Mini Hydraulic Excavator, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. It outlines the disassembly sequence and steps to remove each part, and provides illustrations. Tolerances and limits are provided for inspecting components like gears, bearings, and shaft ends to determine if replacement is needed.
Caterpillar Cat 305C CR Mini Hydraulic Excavator (Prefix HWJ) Service Repair ...yan77xunhao
This document provides instructions for disassembling and inspecting components of a S4Q2-T engine, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. The multi-step procedures describe removing each component, measuring specifications, and inspecting parts for wear and damage. Replacement is recommended if measurement limits are exceeded. Cautions are provided regarding part identification and handling.
Caterpillar Cat 305C CR Mini Hydraulic Excavator (Prefix HWJ) Service Repair ...jdjkskmikdkmd
The document provides instructions for disassembling and inspecting various engine components of a 305C CR Mini Hydraulic Excavator, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. It lists the components in their disassembly sequence and provides illustrations and instructions for removing each part. Tolerances and limits are provided for measuring various components like gear backlash, end play, and clearance.
Caterpillar cat 305 c cr mini hydraulic excavator (prefix hwj) service repair...fjskekfseik
This document provides instructions for disassembling and inspecting components of a S4Q2-T engine, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. The multi-step procedures describe removing each component, measuring specifications, and inspecting parts for wear and damage. Replacement is recommended if measurement limits are exceeded. Cautions are provided regarding part identification and handling.
Caterpillar cat 305 c cr mini hydraulic excavator (prefix hwj) service repair...fikskkdmmd1
The document provides instructions for disassembling and inspecting various engine components of a 305C CR Mini Hydraulic Excavator, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. It lists the components in their disassembly sequence and provides illustrations and instructions for removing each part. Tolerances and limits are provided for measuring various components like gear backlash, end play, and clearance.
Caterpillar cat 305 c cr mini hydraulic excavator (prefix hwj) service repair...cdfvvv1
This document provides instructions for disassembling and inspecting components of a S4Q2-T engine, including the timing gear, camshaft, oil pan, piston, connecting rod, crankshaft, and cylinder block. The multi-step procedures describe removing each component, measuring specifications, and inspecting parts for wear and damage. Replacement is recommended if measurement limits are exceeded. Cautions are provided regarding part identification and handling.
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2. Shutdown SIS
Previous Screen
Product: MINI HYD EXCAVATOR
Model: 304D CR MINI HYD EXCAVATOR TYK
Configuration: 304D CR Mini Excavator TYK00001-UP (MACHINE) POWERED BY S3Q2 Engine
Disassembly and Assembly
S3Q2 and S3Q2-T Engines
Media Number -KENR6786-03 Publication Date -01/08/2015 Date Updated -18/08/2015
i04111938
Timing Gear, Camshaft, and Oil Pan - Disassemble and Inspect
SMCS - 1206-015; 1206-040; 1210-015; 1210-040; 1302-015; 1302-040
Disassembling and inspecting timing gear, camshaft, and oil
pan
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3. Illustration 1 g02315293
Disassembling sequence
(1) Crankshaft pulley
(2) Cover
(3) Timing gear case
(4) Baffle plate
(5) Idler gear
(6) Oil pan
(7) Oil pump
(8) Camshaft
(9) Front plate
Removing crankshaft pulley
Note: The bar that stops the crankshaft from turning may come off. Pay due attention to safety.
2/10
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4. Illustration 2 g02210558
1. Screw two guide bolts into the threaded holes at the rear end of the crankshaft. Stick a bar
across the guide bolts to prevent the crankshaft from turning.
2. Remove the crankshaft pulley.
3. Take out the woodruff key of the crankshaft.
Inspect the crankshaft pulley (1) for worn belt groove and worn oil seal contact surface.
Removing timing gear case
Note: The front plate is bolted to the crankcase from inside the gear case. Do not attempt to
remove the front plate together with the gear case by tapping.
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5. Illustration 3 g02210559
1. Remove bolts from the timing gear case.
2. Remove the timing gear case.
Inspect the timing gear case (3) for Crack and abnormality of knock hole.
Note: Bolts have different lengths. Pay attention to the positions of bolts to ensure correct
reassembling.
Measuring timing gear backlash
Illustration 4 g02210560
Use anyone of the following procedure to measure the backlash of the gear :
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6. • Apply a dial gauge to the circumference of gear shaft at the right angle to the shaft.
• Insert feeler gauges into the meshing between two gears.
Replace the gear if the limit is exceeded.
Table 1
Item Standard Limit
Timing gear
backlash
Between crankshaft gear
and idler gear
0.030 to 0.160 mm (0.0012
to 0.0063 inch)
0.250 mm
(0.0098 inch)
Between idler gear and
valve camshaft gear
0.040 to 0.170 mm (0.0016
to 0.0067 inch)
Between idler gear and
pump camshaft gear
0.030 to 0.180 mm (0.0012
to 0.0071 inch)
Measuring idler gear end play
Illustration 5 g02210573
(10) Thrust plate
Using a feeler gauge or dial gauge, measure the end play of idler gear. If the measured value exceeds
the limit, replace the idler gear with the new gear.
Table 2
Item Standard Limit
5/10
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7. End play
0.050 to 0.200 mm (0.0020 to 0.0079 inch) 0.350 mm (0.0138 inch)
Removing idler gear
Illustration 6 g02210574
1. Remove the thrust plate bolt.
2. Remove the idler gear while turning the gear.
Inspect the thrust plate and idler gear bushing for wear. Inspect the idler gear for flaking, uneven
contact, damage, and abnormal key groove condition. Inspect the plug for clogged oil holes and wear.
Measuring camshaft end play
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8. Illustration 7 g02210575
Measure the camshaft end play with the camshaft gear attached. If the limit is exceeded, replace the
thrust plate with a new one.
Table 3
Item Standard Limit
Camshaft end play
0.100 to 0.250 mm (0.0039 to 0.0098 inch) 0.300 mm (0.0118 inch)
Inverting crankcase
Note: Do not place the engine directly on the ground, which leads damage / cracking of oil pan
(6) .
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9. Illustration 8 g02315294
1. Attach the wire rope to the crankcase. Using a crane to hoist the crankcase and lay the
crankcase with the side of the crankcase facing downwards.
2. After that, hoist the crankcase again and invert the crankcase.
Removing oil pan and oil pan gasket
Illustration 9 g02210577
1. Remove the bolts from the oil pan, and remove the oil pan from crankcase.
2. Remove the oil pan gasket from crankcase.
Removing oil pump
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10. Illustration 10 g02210578
Remove the oil pump set bolts (11), and pull out the oil pump from crankcase.
Removing camshaft
Note: Be careful not to damage the cams of camshaft and the bushings.
Illustration 11 g02210579
1. Rotate the camshaft to see the thrust plate bolt through the camshaft gear hole.
2. By using the socket P/N:34491-00300 (12), remove the thrust plate bolt.
3. Remove the camshaft from the crankcase.
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11. 4. Remove the tappet.
Inspect the thrust plate and camshaft (8) for damage and wear. Replace all the gaskets, seals, and O-
rings during installation.
Removing front plate
Illustration 12 g02210580
1. Remove the front plate bolts.
2. Remove the front plate from the crankcase.
Note: If difficult to remove the front plate, lightly tap the front plate with a plastic hammer.
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Wed Feb 19 23:09:17 UTC+0800 2020
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12. Shutdown SIS
Previous Screen
Product: MINI HYD EXCAVATOR
Model: 304D CR MINI HYD EXCAVATOR TYK
Configuration: 304D CR Mini Excavator TYK00001-UP (MACHINE) POWERED BY S3Q2 Engine
Disassembly and Assembly
S3Q2 and S3Q2-T Engines
Media Number -KENR6786-03 Publication Date -01/08/2015 Date Updated -18/08/2015
i04111950
Piston, Connecting Rod, Crankshaft, and Cylinder Block -
Disassemble and Inspect
SMCS - 1201-015; 1201-040; 1202-015; 1202-040; 1214-015; 1214-040; 1218-015; 1218-040
Disassembling and inspecting piston, connecting rod,
crankshaft, and crankcase
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13. Illustration 1 g02315374
Disassembling sequence
(1) Connecting rod cap
(2) Connecting rod bearing (lower)
(3) Main bearing cap
(4) Main bearing cap (lower)
(5) Crankshaft
(6) Main bearing (upper)
(7) Connecting rod
(8) Connecting rod bearing (upper)
(9) Snap ring
(10) Piston pin
(11) Piston
(12) No.1 compression ring
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14. (13) No.2 compression ring
(14) Oil ring
(15) Tappet
(16) Crankcase
(17) Check valve
Note: When replacing the crankcase, carefully remove parts (relief valve) mounted on the non-
reusable crankcase so that can be reused.
Laying crankcase on its side
Illustration 2 g02315375
Attach the wire rope to the crankcase. By using a crane, hoist the crankcase and lay it with its side
faced downwards.
Measuring connecting rod end play
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15. Illustration 3 g02210895
1. Measure the clearance (end play) between the connecting rod big-end and crankshaft by using
the thickness gauge.
2. If the clearance beyond the limit, replace the connecting rod with new one.
Table 1
Item Standard Limit
Connecting rod end play
0.150 to 0.350 mm (0.0059 to 0.0138 inch) 0.500 mm (0.0197 inch)
Removing connecting rod cap
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16. Illustration 4 g02210896
1. Mark the cylinder number on the connecting rod and connecting rod cap.
2. Remove the connecting rod cap.
3. Be sure to make the disassembled lower connecting rod bearing easy to recognize the cylinder
number, and upper or lower.
Inspect the connecting rod cap (1) for scratches, cracks, dint, clogged oil holes, and wear.
Note: Be careful not to damage the bearings. Be sure to arrange the disassembled bearings in the
order for correct assembly.
Removing carbon deposits from the upper part of cylinder
Note: Be sure to remove carbon deposits from the upper part of the cylinder before removing
the piston. Damage the piston and piston ring.
Illustration 5 g02210934
Remove carbon deposits from the upper part of cylinder using a cloth or oil paper. Be careful not to
damage the inner surface of the cylinder.
Pulling out piston
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17. Illustration 6 g02210937
1. Turn the crankshaft to bring the piston to the top dead center.
2. Using a piece of wood such a hammer handle, push the mating surface of the connecting rod
cap. Pull the piston and connecting rod upward from the cylinder.
• Inspect the connecting rod (7) for serration for cracks, clogged oil holes, and wear.
• Inspect the connecting rod cap bolts for damaged threads.
• Inspect the piston (11) for surface scratches, cracks, damage, wear, and carbon deposits.
Removing piston ring
Illustration 7 g02210938
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18. Remove the piston rings using piston ring pliers (18). Inspect both the compression rings and oil ring
for wear, and damage.
Removing piston pin
Illustration 8 g02210939
1. Using snap ring pliers (19), remove the snap ring. Inspect the snap ring (9) for fatigue.
2. Remove the piston pin, and separate the piston from the connecting rod.
Inspect the connecting rod small end bushing for wear and clogged oil holes. Inspect the piston pin
(10) for wear.
Note: Heat the piston with a piston heater or in hot water if the piston pin is stubborn.
Uprearing crankcase
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19. Illustration 9 g02315393
Uprear the crankcase softly with upper faced downward.
Measuring crankshaft end play
Illustration 10 g02210954
1. With attach the dial gauge to top of the crankshaft, measure the end play.
2. If measured value exceeds the limit, replace the flange bearing with new one.
Table 2
Item Standard Limit
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20. Crankshaft end play
0.100 to 0.204 mm (0.0039 to 0.0080 inch) 0.300 mm (0.0118 inch)
Removing main bearing cap
Note: When removing the main bearing cap, be careful do not damage the lower main bearing
lower that are attached to the cap. Also be careful not to drop those parts, which may damage
the crankshaft.
Illustration 11 g02210955
1. Unscrew the main bearing cap bolts. Inspect the main bearing cap bolts for damaged threads.
2. Unscrew the main bearing cap. Inspect the main bearing cap for cracks.
Inspect the main bearing cap (lower) (4) for scratches on inside and outside surfaces, corrosion,
flaking, and seizing.
Note: Mark the bearings for the correct cylinder numbers.
Removing crankshaft
Note: Be careful not to damage bearings when removing the crankshaft.
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21. Thank you very much for
your reading. Please Click
Here. Then Get COMPLETE
MANUAL. NO WAITING
NOTE:
If there is no response to
click on the link above,
please download the PDF
document first and then
click on it.
22. Illustration 12 g02315395
1. Slowly lift the crankshaft straight up.
2. Arrange the bearings in the order of disassembly so that the original positions are restored
when reassembling.
Inspect the crankcase (16) for adhesion of water scale, corrosion, and flaking. Inspect the tappet (15)
for wear.
Note: When raising the crankshaft, do not allow wire chain to come into contact with the crankshaft.
To avoid damage to the crankshaft when raising, use a cloth belt or pad. Mark the bearings for the
correct cylinder numbers.
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
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Wed Feb 19 23:10:14 UTC+0800 2020
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23. Shutdown SIS
Previous Screen
Product: MINI HYD EXCAVATOR
Model: 304D CR MINI HYD EXCAVATOR TYK
Configuration: 304D CR Mini Excavator TYK00001-UP (MACHINE) POWERED BY S3Q2 Engine
Disassembly and Assembly
S3Q2 and S3Q2-T Engines
Media Number -KENR6786-03 Publication Date -01/08/2015 Date Updated -18/08/2015
i04112012
Cylinder Head and Valve Mechanism - Inspect and Repair
SMCS - 1100-023; 1100-040; 1102-023; 1102-040
Measuring distortion of the bottom surface of the cylinder
head
Illustration 1 g02315433
With a straight edge placed on the bottom face of the cylinder head, measure the bottom face
distortion using a feeler gauge. If the measurement exceeds the limit, grind the bottom face using a
surface grinder.
Table 1
Item Standard Limit
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24. Bottom surface distortion
0.050 mm (0.0020 inch) or less 0.200 mm (0.0079 inch)
Note: Do not grind the surfaces more than 0.20 mm (0.008 inch) in total (cylinder head bottom
surface plus crankcase top surface).
Measuring clearance between rocker arm and rocker shaft
Illustration 2 g02212574
(A and B) Measuring points
Measure the inside diameter of the rocker arm and outside diameter of the rocker shaft. Replace
the rocker arm or rocker shaft if the clearance exceeds the limit.
Table 2
Item Nominal Standard Limit
Rocker arm inside
diameter
19.0 mm (0.75
inch)
19.010 to 19.030 mm
(0.7484 to 0.7492 inch)
-
Rocker shaft diameter 19.0 mm (0.75
inch)
18.980 to 19.000 mm
(0.7472 to 0.7480 inch)
-
Clearance between rocker
arm and shaft
- 0.010 to 0.050 mm (0.0004
to 0.0020 inch)
0.070 mm
(0.0028 inch)
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