PUMP GP- 5371185 - Caterpillar

Disassembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 4C-3601 Piston Ring Expander 1
B 5P-8639 Hydraulic Press 1
8F-0024 Hose Assembly 1
1P-2375 Connecting Coupler 1
1P-2376 Connecting Coupler 1
5P-9725 Hydraulic Cylinder 1
5P-8651 Spacer 1
5P-8649 Adapter 1
5P-8650 Adapter 1 Start By:
Remove the pistons and the connecting rods. Refer to Disassembly and Assembly, "Pistons and Connecting Rods - Remove".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g01319591
Illustration 2 g01142147
Use Tooling (A) in order to remove piston rings (1) from piston (2).
Remove retaining ring (3). Note: Careful handling is required for fractured connecting rods. Fractured faces for the connecting rod and connecting rod cap should not be placed on any surface. The connecting rod and the connecting rod cap should be placed on the sides in order to prevent damage. When possible, the connecting rod and the connecting rod cap should be bolted together in order to prevent damage.
Remove piston pin (6) and piston (2) from connecting rod (5).
The connecting rod must be heated for the installation of the piston pin bearing. Do not use a torch.
Raise the temperature of connecting rod (5) in the indicated Area (X). The maximum distance of Area (X) is 85.0 mm (3.35 inch).
Use Tooling (B) in order to remove old bearing (4) and install new bearing (4) at the same time. Refer to Specifications, "Connecting Rod".