MOTOR GP-PISTON 2959416 - Caterpillar

Removal Procedure
Table 1
Required Tools    
Tool    Part Number    Part Description    Qty    
A     138-7576     Link Bracket     4    
B     132-8223     Hydraulic Pump and Motor Gp     1    
1U-6221 Hydraulic Torque Wrench Gp     1    
1U-6222 Wrench Link     1    Start By:
Remove the undercarriage frame. Refer to Disassembly and Assembly, "Undercarriage Frame - Remove".
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 Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
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.
Remove all of the grease from the swing gear and bearing. Put the grease in a suitable container for storage or disposal.
Illustration 1 g00616178
Typical example
Put an alignment mark on the swing gear and bearing and the undercarriage frame for assembly purposes.
Illustration 2 g00616242
Use Tooling (B) to remove bolts (2) that hold swing gear and bearing (1) to the undercarriage frame.
Fasten Tooling (A) and a suitable lifting device to swing gear and bearing (1) , as shown.
Remove swing gear and bearing (1) . The weight of swing gear and bearing (1) is approximately 1814 kg (4000 lb).
Illustration 3 g00616248
Put tape over the sealing surfaces of the dust seals, the inner race and the outer race. The tape will prevent the cleaning solvent from entering the cross section of the dust seals. Thoroughly clean the swing gear and bearing.
Remove dust seals (3) and (4) from the outer race and the inner race of the swing gear and bearing.
Clean the sealing grooves of the inner race and the outer race with a fine grit sandpaper. Use a cleaning solvent to clean the seal grooves. Be sure that the seal grooves are thoroughly clean and dry prior to installing new dust seals.