Caterpillar cat 527 track skidder (prefix ptr) service repair manual (ptr00001 and up)

Service Repair Manual
Models
527 TRACK SKIDDER

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Product: TRACK SKIDDER
Model: 527 TRACK SKIDDER PTR
Configuration: 527 Track Skidder PTR00001-UP (MACHINE) POWERED BY 3304 Engine
Disassembly and Assembly
527 Track-Type Skidder Machine Supplements
Media Number -SENR9426-04 Publication Date -01/11/2009 Date Updated -03/11/2009
i01014257
Implement Pump - Remove
SMCS - 5084-011
Removal Procedure
NOTICE
Care must be taken to ensure that fluids are contained during
performance of inspection, maintenance, testing, adjusting and repair
of the product. Be prepared to collect the fluid with suitable containers
before opening any compartment or disassembling any component
containing fluids.
Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop
Products Guide" for tools and supplies suitable to collect and contain
fluids on Caterpillar products.
Dispose of all fluids according to local regulations and mandates.
Personal injury can result from hydraulic oil pressure and hot oil.
Hydraulic oil pressure can remain in the hydraulic system after the
engine has been stopped. Serious injury can be caused if this pressure is
not released before any service is done on the hydraulic system.
Make sure all of the attachments have been lowered to the ground, and
the oil is cool before removing any components or lines. Remove the oil
1/3527 Track Skidder PTR00001-UP (MACHINE) POWERED BY 3304 Engine(SEBP5...
2019/9/21https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis...

filler cap only when the engine is stopped, and the filler cap is cool
enough to touch with your bare hand.
1. Use the following procedure to release the pressure in the hydraulic system:
a. Lower the implements to the ground.
b. Shut off the engine.
c. Move the control levers through the full travel distance of the levers. This will relieve
any pressure in the pilot system.
d. Slowly loosen the filler cap on the hydraulic oil tank in order to release the pressure.
e. Tighten the filler cap on the hydraulic oil tank.
f. The pressure in the hydraulic system has now been relieved. Lines and components
can now be removed.
Note: Put identification on all lines, hoses, wires, and tubes for installation purposes.
Install a cap or plug on all lines, hoses, and tubes that are disconnected. The caps
and/or plugs prevent the loss of fluid and contaminants cannot enter the system.
Illustration 1 g00619640
1. The weight of the rear bottom guard is 70 kg (155 lb). Use a floor jack to support the guard.
Remove bolts (1) and rear bottom guard (2) .

2. Disconnect hose assemblies (3), (4), (5), and (6) from the implement pump.
3. The weight of the implement pump is 33 kg (73 lb). Use a floor jack to support the pump.
4. Remove four nuts (7), the washers, and the implement pump from the machine.
Copyright 1993 - 2019 Caterpillar Inc.
All Rights Reserved.
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Sat Sep 21 18:18:49 UTC+0800 2019

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i01014260
Implement Pump - Disassemble
SMCS - 5084-015
Disassembly Procedure
Start By:
A. Remove the implement pump.
Table 1
Required Tools
Tool Part Number Description Qty
A 1P-1858 Pliers 1
B 1P-0074 Slide Hammer Puller 1
NOTICE
containing fluids.

1. Be sure that the outside of the implement pump is clean prior to disassembly.
2. Remove O-ring seal (1) from pump (2) .
3. Remove bolts (4) and compensator (3) from the pump.

Typical example
4. Remove plug (6), plug (8), spool (5), and spool (7) from compensator (3) .
Typical example
5. Remove locknuts (9) and (10) .
Typical example
6. Remove margin plug (15), guide (14), spring stop pin (13), spring (12), and guide (11) from
compensator (3) .
7. Remove screw (16) from margin plug (15) .

Typical example
8. Remove compensator plug (21), guide (20), spring (19), and guide (18) from the
compensator.
9. Remove screw (22) from compensator plug (21) .
10. Remove plug (17) and the O-ring seal from the compensator.
11. Remove O-ring seals (23) from the compensator.
Sudden release of spring force can cause injury.
To prevent the possibility of injury, follow the procedure to relieve the
spring pressure.

Note: A spring is held in compression by the head. The pump head can be pushed away
from the pump case very rapidly. The spring tension must be released before the last bolt is
removed from the head. In order to gradually release the spring tension, be sure that the
head moves away from the pump case as the bolts are loosened. The bolts in the head are
long enough to release all of the tension in the spring before the bolts are removed.
12. Remove bolts (25) and head (24) from pump (2) .
13. Remove cylinder (26) from head (24). Also remove the spacer under cylinder (26) .
14. Remove cylinder (27) and spring (28) .
15. Note the location of plate (29) and remove the plate.

16. Remove pistons (30) and (31). Remove the O-ring seal from each of the pistons.
17. Remove bearing cup (32) .
18. If necessary, remove pin (33) .
19. Remove gasket (34) from pump (2) .
20. Remove bolts (35), cover (36), and the O-ring seal.

21. Remove bearing cone (37) from the shaft.
22. Remove plug (38) and the O-ring seal.
23. Remove spacer (39) from the shaft.

24. Remove barrel assembly (40) from pump (2) .
spring pressure.
25. Use a press to compress spring (44). Use Tool (A) to remove snap ring (43) from the groove
in barrel (40) .
26. Slowly release the compression on spring (44) .
27. Remove guide (42), spring (44), and guide (41) from barrel (40) .

Note: Guides (41) and (42) are a different size. Mark the guides for assembly purposes.
28. Remove shaft (45) from pump (2) .
29. Tilt swashplate (46), and pistons (47). Remove the components as an assembly from pump
(2) .

30. Remove bolts (49). Remove plates (48) and (50) .
31. If necessary, remove stops (52) from swashplate (51) .
32. Remove pistons (47) from plate (53) .
10/11527 Track Skidder PTR00001-UP (MACHINE) POWERED BY 3304 Engine(SEB...

33. Remove bearing cone (54) .
34. Remove bearing cup (56) .
35. Remove bolts (58) and swashplate bearings (55) and (57) .
36. Use Tool (B) and remove two lip seals (59) from the housing. Note the direction of the lip
seals for assembly.
37. Use Tooling (A) and remove two snap rings (60) .
Sat Sep 21 18:19:38 UTC+0800 2019

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i01014262
Implement Pump - Assemble
SMCS - 5084-016
Assembly Procedure
Table 1
Required Tools
Tool Part Number Description Qty
A 1P-1858 Pliers 1
B 1P-0510 Driver Group 1
1. Clean all of the parts and inspect all of the parts. If parts are damaged or worn, install new
parts. Put clean oil on all of the internal parts of the pump.
Note: Replace all O-ring seals, gaskets, and shaft seals.

2. Use Tool (A) to install two snap rings (60) .
3. Use Tool (B) to install two lip seals (59) in the housing.
4. Use bolts (58) to install swashplate bearings (55) and (57). Tighten bolts (58) to a torque of
4 ± .4 N·m (35 ± 3.5 lb in).
5. Install bearing cup (56) .
6. Install bearing cone (54) .

7. Install swashplate (46) in pump (2) .
8. Install shaft (45) in pump (2) .

spring pressure.
Note: Use the following procedure to assemble the components of barrel (40) .
9. Put guide (41), spring (44), and guide (42) in position in barrel (40) .
10. Use a press to compress spring (44). Use Tool (A) to install snap ring (43) .
11. Be sure that snap ring (43) is properly seated. Slowly release the compression on spring
(44) .

12. Install pistons (47) on plate (53). Install the pistons in barrel (40) .
13. Install assembled barrel (40), the plate, and the pistons on the shaft as a unit. Be sure that
the splines are aligned.
14. Apply 9S-3263 Thread Lock Compound to the threads of bolts (49). Install plates (48) and
(50) with the bolts. Tighten the bolts to a torque of 14 ± 1 N·m (124 ± 9 lb in).

15. Install spacer (39) to the shaft.
16. Install plug (38) and the O-ring seal in pump (2). Tighten the plug to a torque of 101.5 ± 4.5
N·m (75 ± 3 lb ft).
17. Install bearing cone (37) on the shaft.

18. Install the O-ring seal, cover (36), and bolts (35). Tighten the bolts to a torque of 8.5 ± 1
N·m (75 ± 9 lb in).
Note: If the shaft bearings, the shaft, the head, or the housing were replaced, an end play
adjustment must be made. To obtain axial shaft end play of .01 to .10 mm (.0004 to .0039
inch), use the required shims from the 9T-3038 Shaft Shim Kit .
19. Install gasket (34) on pump (2) .
20. Install the O-ring seals on pistons (30) and (31). Apply Loctite No. 680 sealant to the
threads of the pistons.
21. Install the pistons in head (24) and tighten to a torque of 79 ± 4 N·m (58 ± 3 lb ft).
22. If pin (33) was removed, install the pin.
23. Install bearing cup (32) .

24. Install plate (29). Be sure that the notch in the plate is aligned with pin (33) .
25. Install the spacer under cylinder (26) and install cylinder (26) in head (24) .
26. Install cylinder (27) and spring (28) .
27. Use bolts (25) to install head (24) to pump (2). Tighten the bolts evenly to a torque of 71 ±
14 N·m (52 ± 10 lb ft).

28. Install O-ring seals (23) on the compensator.
29. Install the O-ring seal and plug (17) on the compensator. Tighten the plug to a torque of
30.5 ± 1.5 N·m (23 ± 1 lb ft).
30. Install screw (22) in compensator plug (21) .
31. Install guide (18), spring (19), guide (20), and compensator plug (21) in the compensator.
32. Install screw (16) in margin plug (15) .
33. Install guide (11), spring (12), spring stop pin (13), guide (14), and margin plug (15) in
compensator (3) .

34. Tighten locknuts (9) and (10) to a torque of 17 ± 3 N·m (150 ± 26 lb in).
Note: Refer to Systems Operation, Testing and Adjusting, SENR9424 for the correct
procedure for adjusting the flow compensator.
35. Put spools (5) and (7) in position in the compensator.
36. Install plugs (6) and (8). Tighten the plugs to a torque of 30.5 ± 1.5 N·m (22 ± 1 lb ft).

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37. Use bolts (4) to install compensator (3) on the pump. Tighten the bolts to a torque of 34 ± 3
N·m (25 ± 2 lb ft).
38. Install O-ring seal (1) on pump (2) .
End By: Install the implement pump.
Sat Sep 21 18:20:27 UTC+0800 2019

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i01014258
Implement Pump - Install
SMCS - 5084-012
Installation Procedure
1. Be sure that the O-ring seal is in position on the front of the pump.
2. The approximate weight of the implement pump is 33 kg (73 lb). Use a floor jack to put the
implement pump in position.
3. Install the washers and four nuts (7) .

4. Connect hose assemblies (3), (4), (5), and (6) to the implement pump.
5. The weight of the rear bottom guard is 70 kg (155 lb). Use bolts (1) and the washers to
install rear bottom guard (2) .
6. Fill the hydraulic tank to the correct level.
Note: For the correct procedure to fill the hydraulic system on the 527 Track-Type Skidder, refer
to Operation and Maintenance Manual, SEBU7001, "Hydraulic System Oil - Change".
Sat Sep 21 18:21:16 UTC+0800 2019

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i01014266
Bulldozer Control Valve - Remove
SMCS - 5115-011
Removal Procedure
NOTICE
containing fluids.
Personal injury can result from hydraulic oil pressure and hot oil.
Hydraulic oil pressure can remain in the hydraulic system after the
engine has been stopped. Serious injury can be caused if this pressure is
not released before any service is done on the hydraulic system.
Make sure all of the attachments have been lowered to the ground, and
the oil is cool before removing any components or lines. Remove the oil

Caterpillar cat 527 track skidder (prefix ptr) service repair manual (ptr00001 and up)

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