MANIFOLD & SOLENOID GP-CONTROL 4790585 - Caterpillar

Disassembly Procedure
Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     1P-1857     Retaining Ring Pliers     1    
B     1U-6683     Ring Expander     1    
C     1P-0510     Driver Group     1    Start By:
Remove the pistons and 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 g00835996
Use Tooling (A) to remove retaining rings (4) from piston (2) .
Remove piston pin (3) and connecting rod (1) from piston (2) .Note: Check the condition of the following parts: retaining rings (4), piston pin (3) and piston (2). If these items are worn or damaged, use new parts for replacement.
Illustration 2 g00836010
Use Tooling (B) to remove the following items from piston (2) : top piston ring (5), intermediate piston ring (6) and oil control piston ring (7) .Note: Check the condition of the piston rings. If the piston rings are worn or damaged, use new parts for replacement.
Illustration 3 g01038026
Illustration 4 g01047985
Use Tooling (C) and a suitable press to remove piston pin bushing (8) from connecting rod (1) .Note: Check the condition of the following items: piston pin bushing (8) and connecting rod (1) .