CONTACTOR 3N4028 - Caterpillar

Disassembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 1U-6683 Ring Expander 1
B 1P-1857 Retaining Ring Pliers 1 Start By:
Remove the pistons and the connecting rods. Refer to Disassembly and Assembly, "Piston and Connecting Rods - Remove".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g00551459
Typical example
Use Tooling (A) in order to remove three piston rings (1) from piston (2).
Illustration 2 g00551460
Typical example
Use Tooling (B) in order to remove retaining rings (3) that hold the piston pin in position.
Remove piston pin (4) from the piston. Note: If the piston pin cannot be removed by hand, heat the piston to a temperature of 45 5 °C (113 9 °F). Do not use a torch to heat the piston.
Remove bearing (5) from connecting rod (6).
Illustration 3 g00893862
Use a suitable press and a suitable adapter in order to remove piston pin bushing (7) from connecting rod (6).