VALVE GP-PUMP CONTROL 2742481 - Caterpillar

Disassembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 1U-6683 Ring Expander 1
B 387-1313 Piston Wrist Pin Tool 1 Start By:
Remove the pistons and the connecting rods.Note: Make a temporary mark on the components of the piston and connecting rod assembly. Marking the components will ensure that the components of each piston and connecting rod assembly can be reinstalled in the original cylinder. Mark the underside of the piston on the front pin boss. Do not interchange components.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g02723365
Illustration 2 g02723368
Position the piston and connecting rod in a soft jaw vise. Use Tooling (A) to remove three rings (2) from piston (1).
Illustration 3 g02723373
Illustration 4 g02723375
Remove retaining ring (4) and remove piston wrist pin (3) from piston (1).Note: Note the position of the forged mark on the piston and the marks on the rod. The forged marks are for the purposes of correct orientation of the connecting rod assembly and piston assembly.
If necessary, remove bolts (7) and connecting rod bearings (6) from connecting rod (5) and connecting rod cap (8). Inspect connecting rod bushing (9).
Illustration 5 g02836798
Place the piston on a suitable surface with the crown upward. Use Tooling (B) to remove connecting rod bushing (9) from connecting rod (5).
Inspect the connecting rod for wear and damage. If necessary, replace connecting rod (5) or replace the connecting rod bushing (9).Note: If the connecting rod or the bush for the piston pin are replaced, refer to Specifications, "Connecting Rods" for the correct procedure.
Repeat Step 1 through Step 5 to disassemble the remaining pistons and connecting rods.