This service manual provides instructions for disassembling and assembling the main control valve for 325, 325L, and 325N excavator models. It details removing over 30 individual components of the valve including pressure control valves, check valves, relief valves, spools, seals and more. Dismantling and cleaning procedures are described along with proper reinstallation of all parts in their original locations and orientations.
Caterpillar cat 325 track type excavator (prefix 5 wk) service repair manual ...JayHaines2
This document provides instructions for disassembling and assembling the main control valve for 325, 325L and 325N excavator models. It describes removing over 30 components of the valve including pressure control valves, check valves, relief valves, spools and housings. Precautions are given to identify parts, keep them clean, and install components back in their original locations.
The document provides instructions for servicing components of an excavator engine, including disassembling and assembling the exhaust manifold, fuel transfer pump, governor, and other parts. The multi-step instructions describe removing and installing components like bolts, gaskets, valves, springs, and housings. Photos supplement the text instructions to aid with the servicing process.
Caterpillar cat 245 b series ii excavator (prefix 1sj) service repair manual ...fujsfskekem
This document provides instructions for removing and installing the front and rear piston pumps on a 245B Series II Excavator. It describes draining the hydraulic tank, removing mounting hardware and hoses, and using hoists to lift the heavy pumps. Detailed steps are given for disassembling the pumps into individual components like pistons, seals, bearings, and housings. The assembly process is described in reverse order.
Caterpillar cat d8 k track type tractor dozer bulldozer (prefix 66v) service ...fusjejfjskeksmem
The document provides instructions for disassembling and assembling various hydraulic control valves for a Caterpillar D8K track-type tractor, including:
1. The dozer control valve, which involves removing housing and internal components like springs, pistons, and spools.
2. The pilot valve group, which controls functions like dozer tilt and ripper lift. It is divided into individual pilot valves that are disassembled by removing covers, spools, and seals.
3. The ripper control valve, which controls ripper functions. It involves separating the valve into groups and removing components like housings, spools, springs and retainers.
This document provides instructions for disassembling and assembling the swing drive of a 245 Excavator model. It describes removing the swing drive motor and brake, then disassembling the swing drive into individual components. These include removing bearings, seals, gears, and the pinion shaft. Detailed steps are provided for each part, including any special tools needed and component weights. The purpose is to repair or replace parts within the swing drive assembly.
Caterpillar cat m315 c wheeled excavator (prefix bdm) service repair manual (...hhjsekmdmm
The document provides instructions for disassembling and assembling the main hydraulic pump of a M315C wheeled excavator. It lists 42 steps to disassemble the pump by removing components like valves, pistons, springs, seals and bearings. It then lists 22 steps for reassembling the pump by reversing the disassembly steps and ensuring proper installation of components and use of tools. Precautions are provided around cleaning components and marking parts for orientation during reassembly to prevent damage and mixing of parts.
Caterpillar cat 325 l track type excavator (prefix 5wk) service repair manual...JayHaines2
This document provides instructions for disassembling and assembling the main control valve for 325, 325L and 325N excavator models. It describes removing over 30 components of the valve including pressure control valves, check valves, relief valves, spools and housings. Precautions are given to mark parts as they are removed and ensure all components are clean before reassembly.
Caterpillar cat 325 track type excavator (prefix 5 wk) service repair manual ...fjskkmemem
This document provides instructions for disassembling and assembling the main control valve for 325, 325L and 325N excavator models. It describes removing over 30 components of the valve including pressure control valves, check valves, relief valves, spools and housings. Precautions are given to properly mark parts as they are removed and ensure all components are clean before reassembly.
Caterpillar cat 325 track type excavator (prefix 5 wk) service repair manual ...JayHaines2
This document provides instructions for disassembling and assembling the main control valve for 325, 325L and 325N excavator models. It describes removing over 30 components of the valve including pressure control valves, check valves, relief valves, spools and housings. Precautions are given to identify parts, keep them clean, and install components back in their original locations.
The document provides instructions for servicing components of an excavator engine, including disassembling and assembling the exhaust manifold, fuel transfer pump, governor, and other parts. The multi-step instructions describe removing and installing components like bolts, gaskets, valves, springs, and housings. Photos supplement the text instructions to aid with the servicing process.
Caterpillar cat 245 b series ii excavator (prefix 1sj) service repair manual ...fujsfskekem
This document provides instructions for removing and installing the front and rear piston pumps on a 245B Series II Excavator. It describes draining the hydraulic tank, removing mounting hardware and hoses, and using hoists to lift the heavy pumps. Detailed steps are given for disassembling the pumps into individual components like pistons, seals, bearings, and housings. The assembly process is described in reverse order.
Caterpillar cat d8 k track type tractor dozer bulldozer (prefix 66v) service ...fusjejfjskeksmem
The document provides instructions for disassembling and assembling various hydraulic control valves for a Caterpillar D8K track-type tractor, including:
1. The dozer control valve, which involves removing housing and internal components like springs, pistons, and spools.
2. The pilot valve group, which controls functions like dozer tilt and ripper lift. It is divided into individual pilot valves that are disassembled by removing covers, spools, and seals.
3. The ripper control valve, which controls ripper functions. It involves separating the valve into groups and removing components like housings, spools, springs and retainers.
This document provides instructions for disassembling and assembling the swing drive of a 245 Excavator model. It describes removing the swing drive motor and brake, then disassembling the swing drive into individual components. These include removing bearings, seals, gears, and the pinion shaft. Detailed steps are provided for each part, including any special tools needed and component weights. The purpose is to repair or replace parts within the swing drive assembly.
Caterpillar cat m315 c wheeled excavator (prefix bdm) service repair manual (...hhjsekmdmm
The document provides instructions for disassembling and assembling the main hydraulic pump of a M315C wheeled excavator. It lists 42 steps to disassemble the pump by removing components like valves, pistons, springs, seals and bearings. It then lists 22 steps for reassembling the pump by reversing the disassembly steps and ensuring proper installation of components and use of tools. Precautions are provided around cleaning components and marking parts for orientation during reassembly to prevent damage and mixing of parts.
Caterpillar cat 325 l track type excavator (prefix 5wk) service repair manual...JayHaines2
This document provides instructions for disassembling and assembling the main control valve for 325, 325L and 325N excavator models. It describes removing over 30 components of the valve including pressure control valves, check valves, relief valves, spools and housings. Precautions are given to mark parts as they are removed and ensure all components are clean before reassembly.
Caterpillar cat 325 track type excavator (prefix 5 wk) service repair manual ...fjskkmemem
This document provides instructions for disassembling and assembling the main control valve for 325, 325L and 325N excavator models. It describes removing over 30 components of the valve including pressure control valves, check valves, relief valves, spools and housings. Precautions are given to properly mark parts as they are removed and ensure all components are clean before reassembly.
Caterpillar cat 325 track type excavator (prefix 5 wk) service repair manual ...ifoseidkkd
This document provides instructions for disassembling the main control valve of an excavator model 325-A. It lists 33 detailed steps to remove components like pressure control valves, check valves, relief valves, spools, covers, and more. Safety notices are included to properly handle parts and avoid damage. Identification marks should be placed on removed parts to ensure correct reassembly.
Caterpillar cat 325 l track type excavator (prefix 5wk) service repair manual...fujsekksmem
This document provides instructions for disassembling and assembling the main control valve for 325, 325L and 325N excavator models. It describes removing over 30 components of the valve including pressure control valves, check valves, relief valves, spools and housings. Detailed steps are provided to disassemble each component and remove seals and springs. The assembly section then describes reinstalling all components and seals back into the main control valve body. Safety notices are included to handle parts carefully and ensure all components are clean before reassembly.
Caterpillar cat 325 track type excavator (prefix 5 wk) service repair manual ...fujsekksmem
This document provides instructions for disassembling the main control valve of an excavator model 325-A. It lists 33 detailed steps to remove components like pressure control valves, check valves, relief valves, spools, housings, covers and more. Many parts need identification marks during removal and cleaning is important to prevent leakage. The main control valve weighs 190 kg (420 lb) and springs provide force that must be held during removal of certain components.
Caterpillar cat 325 a track type excavator (prefix 5 wk) service repair manua...fujsekksmem
This document provides instructions for disassembling and assembling the main control valve for 325, 325L and 325N excavator models. It describes removing over 30 components of the valve including pressure control valves, check valves, relief valves, spools and housings. Precautions are given to mark parts as they are removed and ensure all components are clean before reassembly.
Caterpillar cat 325 a track type excavator (prefix 5 wk) service repair manua...ifoseidkkd
This document provides instructions for disassembling the main control valve of an excavator model 325-A. It lists 33 detailed steps to remove components like pressure control valves, check valves, relief valves, spools, housings, covers and more. Many parts require identification marks and cleaning to prevent damage or leakage. Safety precautions are noted, like holding a pressure control valve in place due to spring force. Dismantling involves removing seals, springs, valves and other parts from various assemblies.
Caterpillar cat 325 l track type excavator (prefix 5wk) service repair manual...fjskkmemem
This document provides instructions for disassembling and assembling the main control valve for 325, 325L and 325N excavator models. It describes removing over 30 components of the valve including pressure control valves, check valves, relief valves, spools and housings. Precautions are given to identify parts, keep them clean, and install components back in their original locations.
Caterpillar cat 325 l track type excavator (prefix 5wk) service repair manual...ifoseidkkd
This document provides instructions for disassembling and assembling the main control valve for 325, 325L and 325N excavator models. It describes removing over 30 components of the valve including pressure control valves, check valves, relief valves, spools and housings. Precautions are given to mark parts as they are removed and ensure all components are clean before reassembly.
Caterpillar cat 325 a track type excavator (prefix 5 wk) service repair manua...fjskkmemem
This document provides instructions for disassembling the main control valve of an excavator model 325-A. It lists 33 detailed steps to remove components like pressure control valves, check valves, relief valves, spools, housings, covers and more. Many parts need identification marks during removal and cleaning is important to prevent leakage. The main control valve weighs 190 kg (420 lb) and springs provide force that must be held during removal of certain components.
Caterpillar cat 325 a track type excavator (prefix 5 wk) service repair manua...JayHaines2
This document provides instructions for disassembling and assembling the main control valve for 325, 325L and 325N excavator models. It describes removing over 30 components of the valve including pressure control valves, check valves, relief valves, spools and housings. Precautions are given to mark parts as they are removed and ensure all components are clean before reassembly.
The document provides instructions for servicing components of an excavator engine, including disassembling and assembling the exhaust manifold, fuel transfer pump, governor, and other parts. The multi-step instructions describe removing and installing parts like bolts, gaskets, valves, springs, and housings. Photos illustrate the component locations and tooling used.
This document provides instructions for disassembling and assembling various components of an excavator engine, including the exhaust manifold, fuel transfer pump, and governor. The multi-page document details each step in the disassembly and assembly process with pictures and part numbers. It describes removing and installing components like bolts, gaskets, valves, springs, seals, housings and more.
Caterpillar cat 325 l track type excavator (prefix 9kl) service repair manual...f98soeodidkdk
This service repair manual provides instructions for disassembling and assembling the main control valve for 325, 325L, and 325N excavator models. It lists 33 detailed steps to fully disassemble the main control valve and its various components. Identification marks should be placed on parts as they are removed. Cleanliness and lubrication of internal parts is important during the process.
Caterpillar cat 325 c mobile hyd power unit (prefix msg) service repair manua...f98soeodidkdk
The document provides instructions for removing and installing a crankshaft gear on a 3126B engine. It lists the required tools and steps to remove the crankshaft first before removing the gear using a bearing puller. The installation procedure is not described.
Caterpillar cat 325 c ln excavator (prefix csj) service repair manual (csj000...f98soeodidkdk
This document provides instructions for disassembling and assembling the travel motor of 325C excavator models. The disassembly procedure involves 27 steps to remove components like the head, brake piston, barrel assembly, and shaft assembly. The assembly procedure describes 22 steps including installing seals, plates, springs and ensuring proper alignment of components like the cam plate and keys. Special care must be taken when handling components and aligning parts to prevent damage during reassembly.
Caterpillar cat 325 c ln excavator (prefix crb) service repair manual (crb000...f98soeodidkdk
The document provides instructions for removing and installing the camshaft on a Caterpillar 3126B engine used in 325C excavators. The summary is:
1) Remove the lifter group and front cover to access the camshaft. Wire the valve lifters away from the camshaft. Remove the camshaft retainer plate and bolts, then remove the camshaft.
2) Install the camshaft, ensuring the timing marks are aligned. Install the camshaft retainer plate and bolts. Install the lifter group and front cover.
3) The document provides step-by-step instructions for removing and installing the camshaft, camshaft gear
Caterpillar cat 325 c l excavator (prefix csj) service repair manual (csj0000...f98soeodidkdk
This document provides the disassembly and assembly procedures for a 325C excavator travel motor. The disassembly procedure involves 27 steps to remove all components from the travel motor body. The assembly procedure describes 22 steps to reinstall all components in the reverse order, ensuring proper installation of seals, plates, springs and other parts. Precise alignment marks and original component positions are critical to correctly reassemble the travel motor.
Caterpillar cat 325 c l excavator (prefix crb) service repair manual (crb0000...f98soeodidkdk
The document provides instructions for removing and installing various engine components on a 325C excavator, including:
1. Removing the camshaft by wiring the valve lifters away, removing retaining bolts, and lifting the camshaft out.
2. Installing the camshaft by carefully lowering it into place while ensuring proper timing marks are aligned.
3. Removing the camshaft bearings using a special tool, and installing new bearings while orienting the oil holes correctly.
Caterpillar cat 325 c excavator (prefix csj) service repair manual (csj00001 ...f98soeodidkdk
This document provides instructions for disassembling and assembling the travel motor of 325C excavator models. The disassembly procedure involves 27 steps to remove components like the head, brake piston, barrel assembly, springs and seals. The assembly procedure consists of 26 steps and requires applying sealant and hydraulic oil, and ensuring components like keys and locating pins are correctly installed. Special care must be taken to avoid damage and keep identification marks aligned during the process.
Caterpillar cat 325 c excavator (prefix crb) service repair manual (crb00001 ...f98soeodidkdk
The document provides instructions for removing and installing various engine components on a 325C excavator, including:
1. Removing the camshaft by wiring the valve lifters away, removing retaining bolts, and lifting the camshaft out.
2. Installing the camshaft by carefully inserting it into place while ensuring proper timing marks are aligned.
3. Removing the camshaft bearings using a special tool, and installing new bearings by orienting the oil holes and positioning joints.
Caterpillar cat 325 b track type excavator (prefix 8pr) service repair manual...f98soeodidkdk
This document provides instructions for disassembling and assembling a travel motor. It includes 27 steps for disassembling components such as the head, brake piston, barrel assembly, and shaft assembly. It also includes 11 steps for assembling components like the lip seal, shaft assembly, cam plate, and springs back into the travel motor body. Special tools and precautions are noted to properly disassemble and reassemble the travel motor.
Caterpillar cat 325 b ln excavator (prefix 8fn) service repair manual (8fn000...f98soeodidkdk
This document provides instructions for removing and servicing components of the rocker shaft and cylinder head on a 325B and 325B LN Excavator powered by a 3116 engine. The procedures include removing the rocker shaft assembly, disassembling the rocker shaft, inspecting components, assembling the rocker shaft, installing the rocker shaft and pushrods, and removing the cylinder head. Detailed steps are provided along with illustrations to guide the technician through the process while maintaining cleanliness and proper torque specifications.
Caterpillar cat 325 b ln excavator (prefix 6dn) service repair manual (6dn000...f98soeodidkdk
This document provides instructions for removing and installing inlet manifold components on a Caterpillar 325B excavator engine. The summary is:
1. Remove the valve mechanism cover and disconnect any attached pipes or solenoids from the inlet manifold.
2. Remove bolts securing the inlet manifold and remove the manifold and gasket.
3. To install the inlet manifold, position a new gasket and manifold on the engine and secure with bolts, reconnecting any pipes or solenoids.
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This document provides instructions for disassembling the main control valve of an excavator model 325-A. It lists 33 detailed steps to remove components like pressure control valves, check valves, relief valves, spools, covers, and more. Safety notices are included to properly handle parts and avoid damage. Identification marks should be placed on removed parts to ensure correct reassembly.
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This document provides instructions for disassembling and assembling the main control valve for 325, 325L and 325N excavator models. It describes removing over 30 components of the valve including pressure control valves, check valves, relief valves, spools and housings. Precautions are given to mark parts as they are removed and ensure all components are clean before reassembly.
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This document provides instructions for disassembling the main control valve of an excavator model 325-A. It lists 33 detailed steps to remove components like pressure control valves, check valves, relief valves, spools, housings, covers and more. Many parts need identification marks during removal and cleaning is important to prevent leakage. The main control valve weighs 190 kg (420 lb) and springs provide force that must be held during removal of certain components.
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This document provides instructions for disassembling and assembling the mechanical actuated fan on an excavator model 325B. It describes removing the fan blades, mounting hardware, oil, and performing a pressure test on the hub assembly. Further steps include removing the bellcrank, control shaft, hub assembly, through shaft, carrier/spool, main bearing, and rear seal. Detailed illustrations accompany each step to aid in failure analysis and repair.
Caterpillar cat 325 b excavator (prefix 8fn) service repair manual (8fn00001 ...f98soeodidkdk
This document provides instructions for removing and installing a cylinder head on an excavator. It begins by listing other components that must first be removed, such as the fuel filter base, governor, fuel linkage, and manifolds. The removal procedure then instructs technicians to attach a lifting device to the cylinder head and remove bolts holding it to the cylinder block before removing the gasket. The installation procedure lists cleaning the mating surfaces and applying lubricant to the gasket before positioning the head and torquing the bolts to specifications.
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2. Shutdown SIS
Previous Screen
Product: EXCAVATOR
Model: 325-A L EXCAVATOR 9KL
Configuration: 325, 325L TRACK TYPE EXCAVATORS 9KL00001-UP (MACHINE) POWERED BY 3116 ENGINE
Disassembly and Assembly
MAIN CONTROL VALVE SUPPLEMENT FOR 325, 325 L AND 325 N EXCAV
Media Number -SENR5462-00 Publication Date -01/05/1992 Date Updated -11/10/2001
Main Control Valve
SMCS - 5451-016; 5451-015
Disassemble Main Control Valve
Start By:
a. remove main control valve*
NOTE: The weight of the main control valve is 190 kg (420 lb)
1. Thoroughly clean the outside of the main control valve prior to disassembling it.
NOTICE
Put identification marks on all components of the main control valve as
they are being removed. All parts must be reinstalled in their original
locations. Do not damage any of the internal parts during removal. A
damaged valve component will result in oil leakage and affect valve
performance. Keep all internal parts of the valve clean and lubricated.
2. Remove and disassemble pressure control valve (2) as follows:
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3. There is spring force against pressure control valve (2). When four bolts
(1) that hold the pressure control valve in place are removed, the spring
force will be released. To prevent possible personal injury, hold
pressure control valve (2) in place by hand as bolts (1) are being
removed.
a. While holding pressure control valve (2) in place by hand, slowly remove four bolts (1).
Remove pressure control valve (2) from the main valve body.
b. Remove spring (3) from the main valve body.
c. Remove valve assembly (4) from the main valve body.
d. Remove O-ring seals (5) and (6) from the pressure control valve body.
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4. Exploded View Of Pressure Control Valve
e. Remove plug (7) from each end of the valve body. Remove spring (8), valve (9), and spool (10)
from the valve body. If necessary, remove two plugs (11) and five plugs (12) from the valve body.
Remove the O-ring seal from each plug.
3. Remove and disassemble pressure control valve (14) as follows:
a. Remove three bolts (13) and pressure control valve (14) from the main valve body.
b. Remove O-ring seals (15) from the valve body. Remove plug (16) from the valve body.
Exploded View Of Pressure Control Valve
c. Remove two plugs (17), spring (18) and spool (19) from the valve body. If necessary, remove
four plugs (20) and six plugs (21) from the valve body. Remove the O-ring seal from each plug.
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5. 4. Remove the check valve assembly from the main valve body as follows:
a. Remove four bolts (22) and plates (23) and (24) from the main valve body. Remove O-ring seal
(25) from plate (23). Remove O-ring seal (26) from plate (24).
b. Remove pilot (27), spring (29) and check valve (28) from the main valve body.
NOTE: Plate (31) is only for manufacturing purposes.
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6. 5. Remove two bolts (30) and the washers and plate (31) from the main valve body. Remove O-
ring seal (32) from plate (31).
6. Remove the two check valves and five load check valves as follows:
a. Remove two plugs (33) from the main valve body. Remove four plugs (34) and one plug (34A)
from the main valve bodies.
b. Remove O-ring seal (35) from each plug (34). Remove O-ring seal (37) and back-up ring (36)
from each plug (33).
c. Remove spring (38) and plunger (39) for each check valve and load check valve.
7. Remove three plugs (40) from the main valve bodies. Remove the O-ring seal from each plug.
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7. 8. Remove sleeve (41) and sleeve (42) from the main valve body.
9. Remove the check valve from the main valve body. Remove plug (43). Remove sleeve bearing
(44), spring (45) and valve (46). Remove the O-ring seal from plug (43).
10. Remove plug (50), spring (48) and check valve (47) from the main valve body. Remove O-
ring seal (49) from the plug.
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8. 11. Remove line relief valves (51) and (52) from the main valve bodies.
12. Disassemble line relief valves (51) and (52) as follows:
NOTE: Only the O-ring seals and back-up rings are serviceable in the line relief valves (51) and
(52). However the line relief valves can be disassembled for cleaning.
a. Disassemble the line relief valves as shown. Remove O-ring seal (58) from the adapter.
b. Remove back-up ring (53) and O-ring seal (54) from the valve.
c. Remove O-ring seal (55) and two back-up rings (59) from the seat.
d. Remove O-ring seal (57) from the piston.
13. Remove plug (60) from the main valve body. Remove the O-ring seal from the plug.
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9. 14. Remove main relief valve (61) from the main valve body.
15. Disassemble main relief valve (61) as follows:
a. Remove nut (62), the washer and plunger assembly (63) from the adjuster.
b. Remove piston (68), spring (67) and valve (66) from adjuster (65).
c. Loosen nut (64), and remove adjuster (65) from the valve group. Remove the O-ring seal from
each end of the adjuster.
d. Remove insert (69) from the valve body. Remove the two O-ring seals from the insert.
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10. e. Remove seat (76), spring (75) and valve (74) from body (73).
f. Remove O-ring seals (70), (71) and (72) from body (73).
16. Remove plug (77) from the main valve body.
17. Remove straight travel spool assembly (78) from the main valve body.
18. Disassemble the straight travel spool assembly. Remove piston (79) from spool (80). Remove
dowel (82) and spring (81) from spool (80). Remove O-ring seal (83) from plug (77).
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11. 19. Remove bolts (84) that hold nine housings (85) to the main valve bodies. Remove nine
housings (85).
20. Remove O-ring seal (86) from each housing (85).
21. Remove boom spool assembly (87), stick spool assembly (88), swing spool assembly (89) and
travel spool assembly (90) from the main valve body.
22. Remove travel spool assembly (91), attachment spool assembly (92), bucket spool assembly
(93), boom spool assembly (94) and stick spool assembly (95) from the main valve body.
NOTE: The disassembly procedure for spool assemblies (87), (88), (89), (90), (91), (92), (93) and
(95) is the same. Spool assembly (94) is different in that it contains an internal selector spool.
23. Disassemble spool assemblies (87), (88), (89), (90), (91), (92), (93) and (95) as follows:
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12. a. Slide adapter (96) of the spool assembly if so equipped. Remove O-ring seals (101) and (102)
from adapter (96).
b. Remove bolt (100), retainer (99), spring (98) and retainer (97) from the end of the spool.
24. Disassemble boom spool assembly (94) as follows:
a. Remove plug (103), spring (108), spring (104) and valve group (109) from the end of the boom
spool. Remove the O-ring seal from the plug.
b. Remove bolt (107), retainer (111), spring (106) and retainer (110) from the end of the boom
spool.
25. Remove bolts (112) and the washers that hold ten covers (113) to the main valve bodies.
Remove ten covers (113).
26. Remove O-ring seal (114) from each cover (113).
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13. 27. Remove spring (115) and seat (116) for the straight travel spool assembly.
28. Remove line relief valves (117) and (118) from the main valve bodies.
29. Disassemble line relief valves (117) and (118) as follows:
NOTE: Only the O-ring seals and back-up rings are serviceable in the line relief valves (117) and
(118). However, the line relief valves can be disassembled for cleaning.
a. Disassemble the line relief valves as shown. Remove O-ring seal (124) from the adapter.
b. Remove back-up ring (119) and O-ring seal (120) from the valve.
c. Remove O-ring seal (121) and two back-up rings (125) from the seat.
d. Remove O-ring seal (123) from the piston.
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14. 30. Remove two relief valves (126) from the main valve bodies.
31. Remove two plugs (127) from the main valve bodies. Remove the O-ring seals from the plugs.
32. Disassemble relief valves (126) as follows:
a. Remove O-ring seal (132) from body (128).
b. Remove plug (131) from body (128). Remove the O-ring seal from the plug. Remove spring
(130) and valve (129) from body (128).
33. Remove remaining plugs (133) from bottom side of the main valve bodies. Remove the O-ring
seals from the plugs.
34. Remove four bolts (136) and the washers that hold main valve bodies (134) and (135)
together. Separate the valve bodies.
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15. 35. Remove four large O-ring seals (137) and seven small O-ring seals (138) from the main valve
body.
36. Using an appropriate size Allen wrench, remove the two plugs from main valve body (135) at
locations (X).
*
For removal of the main control valve, see the 325, 325 L, & 325 N Excavators Vehicle Systems
Disassembly & Assembly module, Form No. SENR5408.
Assemble Main Control Valve
NOTICE
Be sure all parts of the main control valve are thoroughly clean and
free of dirt and debris. Remove any scratches or burrs from valve
components with polishing paper or and oil stone. Check the condition
of all O-ring seals, back-up rings and springs. If any of the components
are worn or damaged, use new parts for replacement. Put clean
hydraulic oil on the components of the valve as they are being installed.
Be sure to install all parts in their original locations.
1. Using the an appropriate size Allen wrench, install the two plugs in main valve body (135) at
locations (X).
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16. 2. Install four large O-ring seals (137) and seven small O-ring seals (138) in the main valve body.
3. Put main valve body (135) in position on main valve body (134). Install four bolts (136) that
hold the main valve bodies together. Tighten the four bolts evenly.
4. Install the O-ring seals on plugs (133). Reinstall plugs (133) in their original locations in the
main valve bodies.
5. Assemble two relief valves (126) as follows:
a. Install O-ring seal (132) on body (128). Install the O-ring seal on plug (131).
b. Install valve (129), spring (130) and plug (131) in body (128).
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17. 6. Install two relief valves (126) in the main valve bodies as shown. Tighten the relief valves to a
torque of 145 ± 15 N·m (105 ± 11 lb ft).
7. Install the O-ring seal on each plug (127). Install the two plugs in the main valve bodies as
shown.
8. Assemble line relief valves (117) and (118).
a. Install O-ring seal on the piston.
b. Install two back-up rings (125) and O-ring seal (121) on the seat in the positions shown.
c. Install O-ring seal (120) and back-up ring (119) on the valve in the positions shown.
d. Install O-ring seal (124) on the adapter.
e. Reassemble the line relief valves and as shown.
9. Install line relief valves (117) and (118) in the main valve body as shown.
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18. 10. Install seat (116) and spring (115) for the straight travel spool in the main valve body as
shown.
11. Install an O-ring seal (114) in each cover (113).
12. Reinstall ten covers (113) on the main valve bodies as shown. Use bolts (112) and the washers
to hold the covers in place.
NOTE: The assembly procedure for spool assemblies (95), (93), (92), (91), (90), (89), (88) and
(87) is the same. Spool assembly (94) is different in that it contains an internal selector spool.
13. Assemble boom spool assembly (94) as follows:
a. Install retainer (110), spring (106), retainer (111) and bolt (107) on the end of the valve spool as
shown.
b. Install the O-ring seal on plug (103). Install valve group (109), spring (104), spring (108) and
plug (103) in the end of the valve spool as shown.
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19. 14. Assemble spool assemblies (95), (93), (92), (91), (90), (89), (88) and (87) as follows:
a. Install O-ring seals (101) and (102) in each adapter (96).
b. Install retainer (97), spring (98), retainer (99) and bolt (100) on the end of the spool assembly as
shown.
c. Slide adapter (96) on the appropriate spool assemblies.
15. Install stick spool assembly (95), boom spool assembly (94), bucket spool assembly (93),
attachment spool assembly (92) and travel spool assembly (91) in the main valve body as shown.
16. Install travel spool assembly (90), swing spool assembly (89), stick spool assembly (88) and
boom spool assembly (87) in the main valve body as shown.
17. Install an O-ring seal (86) in each housing (85).
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20. 18. Reinstall nine housings (85) on the main valve bodies as shown. Use bolts (84) and the
washers to hold the housings in place.
19. Reassemble straight travel spool assembly (78) as follows:
a. Install O-ring seal (83) on plug (77).
b. Install spring (81), dowel (82) and plug (77) in the end of the spool as shown.
c. Install piston (79) in the end of the spool as shown.
20. Install straight travel spool assembly (78) in the main valve body as shown.
21. Install the O-ring seal on plug (77). Install the plug over the end of the straight travel spool
assembly as shown.
22. Assemble main relief valve (61) as follows:
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21. a. Install O-ring seals (72), (71) and (70) on body (73).
b. Install valve (74), spring (75) and seat (76) in body (73) as shown.
c. Install the two O-ring seals on insert (69). Install the insert in the valve body.
d. Install the O-ring seal on each end of adjuster (65). Install nut (64) and adjuster (65) in the
valve group as shown.
e. Install valve (66), spring (67) and piston (68) in adjuster (65) as shown.
f. Install plunger assembly (63), the washer and nut (62) in the adjuster as shown.
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22. 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.
23. 23. Install main relief valve (61) in the main valve body. Tighten the main relief valve to a torque
of 135 ± 10 N·m (100 ± 7 lb ft).
24. Install the O-ring seal on plug (60). Install plug (60) in the main valve body. Tighten the plug
to a torque of 95 ± 14 N·m (70 ± 10 lb ft).
25. Assemble line relief valves (51) and (52).
a. Install O-ring seal on the piston.
b. Install two back-up rings (59) and O-ring seal (55) on the seat in the positions shown.
c. Install O-ring seal (54) and back-up ring (53) on the valve in the positions shown.
d. Install O-ring seal (58) on the adapter.
e. Reassemble the line relief valves and as shown.
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24. 26. Install line relief valves (51) and (52) in the main valve bodies as shown. Tighten the line
relief valves to a torque of 95 ± 14 N·m (70 ± 10 lb ft).
27. Install O-ring seal (49) on plug (50). Install check valve (47), spring (48) and plug (50) in the
main valve body. Tighten the plug to a torque of 200 ± 25 N·m (150 ± 18 lb ft).
28. Install the O-ring seal on plug (43). Install valve (46), spring (45) and sleeve bearing (44) in
the main valve body as shown. Install plug (43). Tighten the plug to a torque of 200 ± 25 N·m
(150 ± 18 lb ft).
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25. 29. Install sleeves (41) and (42) in the main valve body as shown.
30. Install an O-ring seal on each plug (40). Install the plugs in the main valve bodies as shown.
31. Install the two check valves and five load check valves in the main valve bodies as follows:
a. Install plunger (39) and spring (38) for each check valve and load check valve.
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