Assembly Procedure
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Table 1
| Required Tools |
| Tool |
Part Number |
Part Description |
Qty |
| (A) |
1P-0510 |
Driver Group |
1 |
| (B) |
1P-1862 |
Retaining Ring Pliers |
1 |
| (C) |
4C-8359 |
Eyebolts |
2 |
| (D) |
1P-1859 |
Retaining Ring Pliers |
1 |
Note: The following procedure is for the assembly of a swing motor that has a swing parking brake.
Note: Regular maintenance and frequent inspections are routine precautions. Practice preventive maintenance before damage occurs. Preventive maintenance can help to avoid a failure. If a failure occurs, an accurate diagnosis of the cause can prevent a recurrence. Information is available to analyze failures for piston pumps and motors. Refer to Special Publication, SEBD0641, "Analyzing Axial Piston Pump and Motor Failures".
Note: Refer to Guideline For Reusable Parts, SEBF8032, "Piston Pumps and Motors" as a guideline for reconditioning and determining the reusability of some parts.
Note: Cleanliness is an important factor. Before assembly, all parts should be thoroughly cleaned in cleaning fluid. Allow the parts to air dry. Wiping cloths or rags should not be used to dry parts. Lint may be deposited on the parts which may cause later trouble. Inspect all parts. If any parts are worn or damaged, use new parts for replacement. All disassembly and all assembly procedures must be performed on a clean work surface and in a clean hydraulic area. Keep cleaned parts covered and protected at all times.
Note: O-rings, gaskets, and seals should always be replaced. A used O-ring may not have the same sealing properties as a new O-ring. A reconditioning procedure should not be degraded because of a low cost component such as an O-ring or a gasket. Use 1U-6396 O-Ring Assembly Compound during the assembly procedure.
Note: Apply a light film of hydraulic oil to all components before assembly.
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| Illustration 1 | g00725895 |
- Install O-ring seal (63) onto plug (62) .
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| Illustration 2 | g00725894 |
- Install plug (62) into the housing. Tighten the plug to 36 ± 4 N·m (319 ± 35 lb in).
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| Illustration 3 | g00727138 |
- Use Tooling (A) to install bearing (61) into the housing.
Note: Make sure that the bearing is seated in the counterbore in the body.
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| Illustration 4 | g00727186 |
- Use Tooling (A) to install seal (60) into the housing.
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| Illustration 5 | g00725664 |
- Install spacer (59) into the housing.
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| Illustration 6 | g00727225 |
- Use Tooling (B) to install retaining ring (58) into the housing.
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| Illustration 7 | g00727231 |
- Install spacer (56). Raise the temperature of inner bearing race and install inner bearing race (57) onto the shaft.
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| Illustration 8 | g00727235 |
- Raise the temperature of inner bearing race and install inner bearing race (55) onto the shaft.
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| Illustration 9 | g00725661 |
- Install shaft (4) into the housing.
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| Illustration 10 | g00725655 |
- Install O-ring seals (52) and (53) into the housing.
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| Illustration 11 | g00725658 |
- Install swashplate (54) into the housing.
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| Illustration 12 | g00725647 |
- Install spacer (51), spring (50), and spacer (49) into the barrel.
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| Illustration 13 | g00727240 |
- Use a suitable press and Tooling (B) to install retaining ring (48) into the barrel.
Note: Two pins are used in each of the six hole locations.
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| Illustration 14 | g00725633 |
- Install twelve pins (47) into the barrel.
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| Illustration 15 | g00725620 |
- Install spacer (46) into the bushing.
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| Illustration 16 | g00725617 |
- Install bushing (45) onto the barrel.
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| Illustration 17 | g00725615 |
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| Illustration 18 | g00725614 |
- Install plate (43) onto the nine piston assemblies. Install plate (43) and nine piston assemblies (42) as a unit into barrel (44).
Note: When the barrel assembly is being installed into the housing, do not allow any of the components to come apart. All parts in the barrel assembly must be installed in the original locations.
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| Illustration 19 | g00725600 |
- Place the swing motor on the swing motor's side, as shown. Install barrel assembly (41) onto the shaft and into the housing.
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| Illustration 20 | g00725598 |
- Install four separator plates and three friction plates (40) into the housing.
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| Illustration 21 | g00727248 |
- Use a soft faced hammer and install piston (39) into the housing.
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| Illustration 22 | g00725578 |
- Install eighteen springs (38) into the housing. Install port plate (37) onto the barrel assembly.
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| Illustration 23 | g00725581 |
- Install four half flanges (35) and two covers (36) onto the head. Install the washers and eight bolts (34) into the head.
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| Illustration 24 | g00725567 |
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| Illustration 25 | g00725566 |
- Install two makeup valves (29) into the head, as shown. Install valve (33) and spring (32) into the head. Install O-ring seal (31) onto plug (30). Install plug (30) into the head. Tighten the plug to 539 ± 54 N·m (398 ± 40 lb ft).
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| Illustration 26 | g00725644 |
- Install O-ring seal (28) onto plug (27) .
- Repeat for the other plug.
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| Illustration 27 | g00725509 |
- Install two plugs (27) into the head. Tighten the plugs to 59 ± 6 N·m (44 ± 4 lb ft).
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| Illustration 28 | g00727471 |
- Use Tooling (A) to install bearing (25) into the head. Install two roll pins (26) into the head.
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| Illustration 29 | g00725488 |
- Install O-ring seal (24) onto the head.
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| Illustration 30 | g00727254 |
- Install Tooling (C) and use a suitable lifting device to install the head onto the housing.
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| Illustration 31 | g00725443 |
- Install four socket head bolts (23) into the head. Tighten the bolts to 431 ± 43 N·m (318 ± 32 lb ft).
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| Illustration 32 | g00726111 |
- Install backup ring (18), O-ring seal (19), backup ring (20), and O-ring seal (21) into the relief valve. Install O-ring seal (22) onto the relief valve.
- Repeat for the other relief valve.
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| Illustration 33 | g00725417 |
- Install two relief valves (16) into head (17) .
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| Illustration 34 | g00725409 |
- Install O-ring seals (15), (14), (13), and (12) onto the solenoid.
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| Illustration 35 | g00725408 |
- Install solenoid (11) into the valve body. Install two bolts (10) into the valve body.
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| Illustration 36 | g00725407 |
- Install orifice (9) into the valve body. Install two O-ring seals (8) into the valve body.
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| Illustration 37 | g00725399 |
- Install solenoid valve assembly (7) onto the body. Install three bolts (5) into body (6). Tighten the bolts to 12 ± 1 N·m (106 ± 9 lb in).
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| Illustration 38 | g00725398 |
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| NOTICE |
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To avoid system damage, make sure that the hydraulic motor is properly filled with hydraulic oil before start-up. |
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- Use Tooling (D) to install retaining ring (3) onto shaft (4). Install O-ring seal (1) onto housing (2).
End By:
Install the swing motor. Refer to Disassembly and Assembly, "Swing Motor- Install" in this manual.
