| Required Tools | |||
| Tool | Part Number | Part Description | Qty |
| A | 1P-0510 | Driver Group | 1 |
| B | 1P-1861 | Snap Ring Pliers | 1 |
Start By:
- Remove the gear pump. Refer to Disassembly and Assembly, "Gear Pump (Hoist) - Remove" for the correct 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, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products. Dispose of all fluids according to local regulations and mandates. |
- Before disassembly, thoroughly clean the outside of the gear pump.
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Illustration 1 g00493940 - Position the pump in a soft jawed vise. Remove eight nuts (3). Remove any burrs or sharp edges from drive gear shaft (1). Put a thin layer of grease on drive gear shaft (1). Keep flange assembly (2) as straight as possible. Lift flange assembly (2) off pump body (4).
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Illustration 2 g00493980 - Check two shaft bushings (5) in flange assembly (2) for wear or damage. If necessary, remove shaft bushings (5).
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Illustration 3 g00494003 Show/hide table
Illustration 4 g00494005 - Use Tool (A) to remove two lip seals (6) from flange assembly (2). Use Tool (B) to remove retaining ring (8) from flange assembly (2). Use Tool (A) to remove lip seal (7) from flange assembly (2).
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Illustration 5 g00494010 Show/hide table
Illustration 6 g00494012 - Remove O-ring seal (9) and pressure plate (11) from pump body (4).
Note: For installation purposes, mark the position of pressure plate (11). Groove (10) on pressure plate (11) must be facing toward the outlet side of pump body (4).
- Remove seal (12) from pressure plate (11).
Note: For installation purposes, mark the position of seal (12). The grooved side of seal (12) must face the surface of pressure plate (11).
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Illustration 7 g00494019 - Mark the position of drive gear (1) and idler gear (13) for installation purposes. Remove drive gear (1) and idler gear (13) from pump body (4).
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Illustration 8 g00494041 Show/hide table
Illustration 9 g00494043 - Remove pressure plate (14) from the pump body.
Note: Mark the position of pressure plate (14) for installation purposes. Groove (16) is located on the bottom of pressure plate (14). Groove (16) must face toward the outlet side of pump body (4).
- Remove seal (15) from pressure plate (14).
Note: Mark the position of seal (15) for installation purposes. The grooved side of seal (15) must face the surface of pressure plate (14).
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Illustration 10 g00494046 - If necessary, remove the dowels from pump body (4). Remove pump body (4) from the gear pump.
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Illustration 11 g00494049 - Inspect shaft bushings (18) and bolt dampers (17) in pump body (4) for wear or damage. If necessary, remove shaft bushings (18) and dampers (17).
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Illustration 12 g00494053 - Remove eight studs (19) and eight O-ring seals (20) from plate assembly (21).
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Illustration 13 g00494055 - Remove spline coupling (22) and O-ring seal (23) from plate assembly (21).
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Illustration 14 g00494057 - Mark plate assembly (21) for installation purposes. Remove plate assembly (21) from pump body (24).
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Illustration 15 g00494380 - Inspect shaft bushings (25) in plate assembly (21) for wear or damage. If necessary, remove shaft bushings (25).
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Illustration 16 g00494440 Show/hide table
Illustration 17 g00494441 - Remove O-ring seal (27) and pressure plate (26) from pump body (24).
Note: Mark the position of pressure plate (26) for installation purposes. Groove (28) is located on top of pressure plate (26). Groove (28) must face the outlet side of pump body (24).
- Remove seal (29) from pressure plate (26).
Note: Mark the position of seal (29) for installation purposes. The grooved side of seal (29) faces the surface of pressure plate (26).
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Illustration 18 g00494445 - Mark the position of drive gear (30) and idler gear (31) for installation purposes. Remove drive gear (30) and idler gear (31) for installation purposes. Remove drive gear (30) and idler gear (31) from pump body (24).
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Illustration 19 g00494446 Show/hide table
Illustration 20 g00494447 - Remove pressure plate (32) from pump body (24).
Note: Mark the position of pressure plate (32) for the installation purposes. Groove (33) is located on the bottom of pressure plate (32). Groove (33) must face the outlet side of pump body (24).
- Remove seal (34) from pressure plate (32).
Note: Mark the position of seal (34) for installation purposes. The grooved side of seal (34) faces the surface of pressure plate (32).
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Illustration 21 g00494485 - If necessary, remove the dowel pins from pump body (24). Inspect shaft bushings (35) in pump body (24) for wear or damage. If necessary, remove the shaft bushings.
