Disassembly Procedure
Start By:
- Remove the track adjuster and the recoil cylinder.
Required Tools     | |||
---|---|---|---|
Tool     | Part Number     | Part Description     | Qty     |
A     | 152-4252     | Hydraulic Repair Bench     | 1     |
B     | 175-5507     | Nitrogen Charging Group     | 1     |
338-0500 | Regulator Assembly     | 1     | |
346-3622 | Relief Valve     | 1     | |
C     | 8T-0372     | Bolt     | 2     |
D     | 1H-3109     | Leg     | 1     |
5F-9887 | Adapter     | 1     | |
5P-4807 | Cap     | 1     | |
- | 1 1/2" Socket 1" Drive     | 1     | |
E     | 9U-5919     | Spanner     | 1     |
209-6756 | Clamp As     | 1     | |
4J-2620 | Wear Ring     | 2     | |
9X-3579 | Wear Ring     | 2     | |
8T-7850 | Wear Ring     | 2     | |
F     | FT-3233     | Spanner Wrench As.     | 1     |
5P-3521 | Pin     | 3     | |
5P-3522 | Pin     | 3     |
![]() |
High pressure cylinder. Parts can separate with explosive force if proper care is not used during disassembly. This can cause injury or death. Do not disassemble any part of this cylinder until you have read and understand the instructions given in the service manual. Observe the instructions given in the service manual. |
![]() |
- Secure cylinder (1) to the hydraulic repair bench.
![]() | |
Illustration 1 | g03483240 |
- Remove bolts (2) and guard (3) .
- Attach Tooling (A) to valve (4) . Slowly vent the nitrogen from the cylinder, until all pressure is released. Refer to Special Instruction, REHS5464, "Accumulator Discharging and Charging Procedures" for further information.
![]() | |
Illustration 2 | g03483316 |
- After all the pressure is released from the recoil cylinder, remove valve (4) from manifold (5) .
![]() | |
Illustration 3 | g03483261 |
![]() | |
Illustration 4 | g03500319 |
- Remove bolts (7) , bolts (8) , manifold (5) , and spring pin (6) .
Note: Cylinder groups that do not include spring pin (6) or holes for spring pin (6) Refer to Special Instruction, REHS8537, "Installation Procedure for Installing Spring Pins in the Recoil Cylinder of Certain D7E Track-Type Tractors".
- Secure cylinder (1) to the hydraulic repair bench. Use Tooling (B) and the hydraulic repair bench to remove head assembly (9) from cylinder (1) .
Note: Some oil will drain during this step.
![]() | |
Illustration 5 | g03512697 |
- Remove O-ring seal (10) , O-ring seal (12) , and backup ring (11) from head assembly (9) .
![]() | |
Illustration 6 | g03501036 |
- Remove plug (13) from cylinder (1) .
![]() | |
Illustration 7 | g03501166 |
- Reorient and secure cylinder (1) to the hydraulic repair bench.
![]() | |
Illustration 8 | g03501175 |
![]() | |
Illustration 9 | g03501201 |
- Use Tooling (D) and the hydraulic repair bench to push the rod assembly until spacer (14) can be removed.
Note: To prevent damage to cylinder (1) wrap Tooling (D) with padding (as shown).
- Remove spacer (14) from the cylinder.
- Remove O-ring seals (15) from spacer (14) .
- Remove rod assembly (16) and piston assembly (17) from cylinder (1) .
![]() | |
Illustration 10 | g03501156 |
- Inspect Cylinder (1) for any internal damage. Refer to Specifications, "Recoil Cylinder" for more information.
- Secure rod assembly (16) , piston assembly (17) , and Tooling (E) to the hydraulic repair bench.
![]() | |
Illustration 11 | g03501560 |
- Remove spring pin (18) from between rod assembly (16) and piston assembly (17) .
Note: Cylinder groups that did not include a spring pin or setscrew (18) or had a spring pin previously installed Refer to Special Instruction, REHS8537, "Installation Procedure for Installing Spring Pins in the Recoil Cylinder of Certain D7E Track-Type Tractors".
- Use Tooling (F) and the hydraulic repair bench to remove piston assembly (17) while holding the rod assembly with Tooling (E) .
![]() | |
Illustration 12 | g03501568 |
- Remove O-ring seal (19) and backup ring (20) from piston assembly (17) .
![]() | |
Illustration 13 | g03502309 |
- Remove wear band (21) , energized wear ring assembly (22) , backup rings (23) , T seal (24) , and wear band (25) from piston (17) .
![]() | |
Illustration 14 | g03502332 |
- Use Tooling (F) and the hydraulic repair bench to remove cap assembly (26) from cylinder (1) .
Note: Remove only if replacing cap assembly (26) . The seals can be replaced without removing cap assembly (26) .
![]() | |
Illustration 15 | g03502403 |
![]() | |
Illustration 16 | g03502502 |
- Remove scraper seal (27) , backup rings (29) , and O-ring seal (28) from cap assembly (26) .