Disassembly Procedure
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Table 1
| Required Tools |
| Tool |
Part Number |
Part Description |
Qty |
| A |
1P-1861 |
Snap Ring Pliers |
1 |
| B |
8S-1378 |
Stud Remover and Resetter Tool Set |
1 |
Start By:
- Remove the pilot and implement oil cooler gear pump. Refer to Disassembly and Assembly, "Gear Pump (Pilot and Implement Oil Cooler) - Remove".
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| NOTICE |
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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. |
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Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.
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| Illustration 1 | g00585403 |
- Put identification on the gear pump for assembly purposes.
- Remove eight nuts (2) and the washers in order to remove flange assembly (1) from body assembly (3) .
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| Illustration 2 | g00585406 |
- Remove flange assembly (1) from body assembly (3) .
Note: If necessary, use a soft faced hammer in order to remove flange assembly (1) from body assembly (3) .
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| Illustration 3 | g00585410 |
- Remove O-ring seal (4) from flange assembly (1) .
- Remove dowel (6) from flange assembly (1) .
- If necessary, remove plug (7) .
- Inspect two terminal bushings (5) for wear or damage.
Note: If terminal bushings (5) need to be replaced, score the terminal bushings with a small saw. Be careful not to cut into the bore of the flange assembly. Remove the terminal bushings from flange assembly (1). Be careful not to damage or change the dimension of the bore.
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| Illustration 4 | g00585412 |
- Use a hammer and a drift in order to remove lip seal (8) from flange assembly (1). Use Tool (A) (not shown) in order to remove snap ring (9). Use a suitable drift in order to remove the remaining lip seal from flange assembly (1) .
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| Illustration 5 | g00585414 |
- Remove top isolation plate (13) .
- Remove backup ring (10), O-ring seal (11), and ring retainer (12) .
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| Illustration 6 | g00585416 |
Note: Prior to removal, identify the orientation of pressure plate (14) for installation purposes.
- Remove pressure plate (14) .
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| Illustration 7 | g00585418 |
- Remove governor control shaft (15) from body assembly (3) .
- Remove gear (16) from body assembly (3) .
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| Illustration 8 | g00585419 |
Note: Prior to removal, identify the orientation of pressure plate (17) for installation purposes.
- Remove pressure plate (17) .
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| Illustration 9 | g00585421 |
- Remove top isolation plate (21) .
- Remove backup ring (19), O-ring seal (20), and ring retainer (18) .
- Inspect two terminal bushings (22) for wear or damage.
Note: If terminal bushings (22) need to be replaced, score the terminal bushings with a small saw. Be careful not to cut into the bore of the body assembly. Remove the terminal bushings from the body assembly. Be careful not to damage or change the dimension of the bore.
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| Illustration 10 | g00585423 |
- Remove body assembly (3) from bearing plate (23) .
- If necessary, remove dowels (24) from body assembly (3) .
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| Illustration 11 | g00585425 |
- Remove spline coupling (25) .
- Remove eight O-ring seals (26) .
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| Illustration 12 | g00584427 |
- Use Tool (A) in order to remove snap ring (27) (not shown) from spline coupling (25) .
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| Illustration 13 | g00585426 |
- Remove O-ring seal (28) from bearing plate (23) .
- Remove bearing plate (23) from body assembly (30) .
- Inspect two terminal bushings (29) for wear or damage.
Note: If terminal bushings (29) need to be replaced, score the terminal bushings with a small saw. Be careful not to cut into the bore of the bearing plate. Remove the terminal bushings from bearing plate (23). Be careful not to damage or change the dimension of the bore.
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| Illustration 14 | g00585428 |
- Remove isolation plate (33) .
- Remove backup ring (34), O-ring seal (32), and ring retainer (31) .
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| Illustration 15 | g00585429 |
Note: Prior to removal, identify the orientation of pressure plate (35) for installation purposes.
- Remove pressure plate (35) .
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| Illustration 16 | g00585430 |
- Remove gear (36) and idler gear (37) .
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| Illustration 17 | g00585431 |
Note: Prior to removal, identify the orientation of pressure plate (38) for installation purposes.
- Remove pressure plate (38) .
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| Illustration 18 | g00585432 |
- Remove isolation plate (42) .
- Remove backup ring (41), O-ring seal (40), and ring retainer (39) .
- Inspect two terminal bushings (43) for wear or damage.
Note: If terminal bushings (43) need to be replaced, score the terminal bushings with a small saw. Be careful not to cut into the bore of the body assembly. Remove the terminal bushings from the body assembly. Be careful not to damage or change the dimension of the bore.
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| Illustration 19 | g00586086 |
- If necessary, use Tooling (B) (not shown) in order to remove eight studs (44) from body assembly (30) .
- If necessary, remove dowels (45) from body assembly (30) .
