PUMP GP-PISTON 4425649 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A FT-2674 Vacuum Cap 1
B 138-7573 Link Bracket 2
C - Loctite 243 Threadlocker - Start By:
Release the hydraulic system pressure. Refer to Disassembly and Assembly, "Hydraulic System Pressure - Release".
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 g06234395
Typical example.
Remove the cap from the hydraulic tank. Install Tooling (A) onto the hydraulic tank. Attach an air supply hose to Tooling (A). Apply 276 to 414 kPa (40 to 60 psi) of air. This procedure will pull vacuum on the hydraulic system.
Illustration 2 g06234400
Remove bolts (1) and disconnect hose assemblies (3).
Disconnect hose assembly (2), hose assembly (4), and hose assembly (5).
Illustration 3 g06234406
Disconnect hose assembly (6).
Illustration 4 g06234478
Attach Tooling (B) and a suitable lifting device to swivel (7). The weight of swivel (7) is approximately 63 kg (139 lb).
Illustration 5 g06234497
Disconnect hose assemblies (8).
Illustration 6 g06234507
Remove bolts (9) and disconnect hose assemblies (10).
Illustration 7 g06234534
Disconnect hose assembly (11).
Illustration 8 g06234562
Remove bolts (12) and clamp (13).
Illustration 9 g06234573
Remove bolts (14) and swivel (7).Installation Procedure
Install swivel (7) in the reverse order of removal.
Tighten clamp (13) to a torque of 5 0.5 N m (44 4 lb in).
Apply Tooling (C) to the threads of bolts (12). Tighten bolts (13) to a torque of 37 4 N m (27 3lb ft).