SCREW-SPECIAL 3629689 - Caterpillar

Removal Procedure
Start By:
Remove the gear pump for the steering oil cooler. Refer to Disassembly and Assembly, "Gear Pump (Steering Oil Cooler) - Remove".Note: Put identification marks on all lines, on all hoses, on all wires, and on all tubes for installation purposes. Plug all lines, hoses, and tubes. This helps to prevent fluid loss and this helps to keep contaminants from entering the system.
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.
Illustration 1 g01456838
Disconnect hose assemblies (1), (3), and (4) from piston pump (2) .
Illustration 2 g01456941
Bottom View
Disconnect hose assemblies (5) and (6) from the bottom of piston pump (2). Hose assemblies (5) and (6) may be accessed from the bottom of the machine. Piston pump (2) can be accessed from the bottom of the machine between the transmission and the front trunnion support of the rear axle. If necessary, lower the power train guard in order to access piston pump (2). Refer to Disassembly and Assembly, "Power Train Guard (Transmisson) - Remove and Install".
Illustration 3 g01456940
Attach a suitable lifting device to piston pump (2). The weight of piston pump (2) is approximately 35 kg (78 lb). Remove piston pump (2) .