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 | |
G | FT-3144 | Seal Installer | 1 |
H | 1U-9891 | Hydraulic Oil Additive(1) | - |
J | FT-3234 | Piston Sleeve | 1 |
K | - | Loctite 243 | - |
(1) | Mix one part Additive with two parts clean 10wt Hydraulic Oil. |
- Use Tooling (G) to install scraper seal (27) into cap assembly (26). Install O-ring seal (28) and backup rings (29) into cap assembly (26).
- Clean the threads of cap assembly (26). Lubricate O-ring seal (28) with Tooling (H).
- Use Tooling (F) and the hydraulic repair bench to install cap assembly (26). Tighten cap assembly (26) to a minimum torque of
300 N·m (220 lb ft) .Show/hide tableIllustration 3 g03502309 - Install O-ring seal (19) and backup ring (20) into piston assembly (17). Lubricate O-ring seal with Tooling (H).
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Illustration 4 g03502332 Show/hide tableIllustration 5 g06012716 Show/hide tableIllustration 6 g03507586 - Install wear band (21) and (22), backup rings (23), T seal (24), and wear band (25) onto piston (17).
- Secure rod assembly (16) and Tooling (E) to the hydraulic repair bench.
- Install piston assembly (17) onto rod assembly (16). Tighten piston assembly (26) to a minimum torque of
300 N·m (220 lb ft) until setscrew (18) can be installed.Note: Cylinder groups that did not include a spring pin or setscrew (18) or had a spring pin previously installed must Refer to Special Instruction, REHS8537, "Installation Procedure for Installing Spring Pins in the Recoil Cylinder of Certain D7E Track-Type Tractors".
Show/hide tableIllustration 7 g03818600 - Apply Tooling (K) to setscrew (18) and install. Torque to
20 ± 1 N·m (175 ± 8 lb in) . Stake the internal threads at three equally spaced locations as shown in Illustration 7. Allow 1 hour of cure time before proceeding to Step 9 or handling the piston assembly. - Remove piston assembly (17) and rod assembly (16) from the hydraulic repair bench. Remove Tooling (E) and Tooling (F).
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Illustration 8 g06012730 - Secure cylinder (1) to the hydraulic repair bench. Install Tooling (J) and lubricate with Tooling (H).
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Illustration 9 g06012733 - Install rod assembly (16) and piston assembly (17) into Tooling (J) and cylinder (1).
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Illustration 10 g06012812 - Use Tooling (D) and the hydraulic repair bench to push the head assembly and rod assembly into cylinder (1).
Note: To prevent damage to cylinder (1) wrap Tooling (D) with padding (as shown).
Show/hide tableIllustration 11 g03501201 - Install O-ring seals (15) onto spacer (14).
- Lubricate O-ring seals (15) with Tooling (H) and install spacer (14) into the cylinder.
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Illustration 12 g03507637 - Install O-ring seal (12), and backup ring (11) into head assembly (9). Lubricate O-ring seal (11) with Tooling (H).
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Illustration 13 g03483582 - Use Tooling (B) and the hydraulic repair bench to install head assembly (9) into cylinder (1). Tighten head assembly (9) to a minimum torque of
300 N·m (220 lb ft) .Show/hide tableIllustration 14 g03507647 - Install O-ring seal (10) onto head (9).
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Illustration 15 g03507655 - Add
236.8 mL (8.0 oz) of Tooling (H) through the center hole in head (9) into the cylinder.Show/hide tableIllustration 16 g03507682 - Install manifold (5), bolts (7), bolts (8), 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".
Note: Align manifold (5) with nitrogen port pointing toward the plug side of cylinder (1), shown in Illustration 7.
Show/hide tableIllustration 17 g03483261 - Install valve (4) into manifold (5).
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Illustration 18 g03507666 Show/hide tableDry nitrogen is the only gas approved for use in the accumulator. Charging the accumulator with oxygen gas will cause an explosion. This danger will not happen if nitrogen cylinders with standard CGA (Compressed Gas Association, Inc.) Number 580 connections are used. When you order nitrogen gas, be sure that the cylinders are equipped with CGA No. 580 Connections. Do not use color codes or other methods of identification to tell the difference between nitrogen and oxygen cylinders.
- Attach Tooling (A) to valve (4). Charge the recoil cylinder with dry nitrogen at
21° C (70° F) to17719 ± 344 kPa (2570 ± 50 psi) . Refer to Testing and Adjusting, "Accumulator (Track Tension) - Test and Charge" for more information.Show/hide tableIllustration 19 g03507683 - Install guard (3) and bolts (2) .
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Illustration 20 g03501166 - Install plug (13) into cylinder (1).
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Illustration 1 | g03502502 |
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Illustration 2 | g03502403 |
End By:
- Install the recoil cylinder and the track adjuster.