PUMP GP-GEAR 2566124 - Caterpillar

Start By:
Remove the bucket.
When you are using hydraulic cylinders and puller studs, always ensure that the rated capacity of the puller stud meets or exceeds the rated capacity of the hydraulic cylinder. If the puller stud does not meet or exceed the rated capacity of the hydraulic cylinder, a sudden failure of the puller stud could occur. The sudden failure of the puller stud could result in personal injury or death.
At operating temperature, the hydraulic oil is hot and under pressure. Hot oils can cause burns.To prevent possible personal injury, release the pressure in the work tool hydraulic circuit (boom, stick, bucket, and swing), travel circuits, and the hydraulic oil tank at the filler cap before any hydraulic lines or components are disconnected or removed.Remove the filler cap only when the engine is stopped and the filler cap is cool enough to touch.
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.
Illustration 1 g03890130
Lower the boom onto Tooling (A). Lower stick (1) to the ground, as shown.
Release the hydraulic system pressure.
Disconnect hose assemblies (2) and (3) from both sides of stick (1).
Illustration 2 g06005516
Attach a suitable lifting device to the rod end of stick cylinder (4).
Remove bolt (6), washer (7), and pin assembly (8). Remove shims (5).
Position suitable cribbing on the boom, under the rod end of cylinder (4). Lower stick cylinder (4) onto the suitable cribbing.
Install pin assembly (8). Install bolt (6) to secure pin assembly (8). Install a suitable sling and a suitable lifting device around pin assembly (8) for removing the stick.
Illustration 3 g01520160
Illustration 4 g01520178
Attach Tooling (B) and a suitable lifting device to stick (1).
Remove bolts (9) and remove washer (10). Remove pin assembly (11) and the shims.
Remove stick (1). Use Tooling (B) and a suitable lifting device r to lower stick (1) onto suitable blocking. The weight of stick (1) is approximately 345 kg (760 lb).
Illustration 5 g06002771
Remove seals (12) and (14). Use Tooling (C) to remove bearings (13). Remove bearings (15).