KIT-SEAL 4597725 - Caterpillar

Disassembly Procedure
Start By:
Remove the rocker shaft and pushrods. Refer to Disassembly and Assembly, "Rocker Shaft and Pushrods - Remove".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g00490026
Remove O-ring seal (1) from the rear support bracket.Note: Replace the O-ring seal when the head bolt is removed from the rear rocker shaft support.
Illustration 2 g00490027
Remove retainer ring (6), washer (5), spring (4), washer (3) and rocker arm (2). Note the number of washers (3) that are used at both ends of the shaft. Remove rocker arms (2) from each end of the rocker shaft.
Illustration 3 g00449687
Remove the pin from the rear rocker shaft support (7) with a hammer and a suitable punch. Remove rear rocker shaft support (7) .
Remove the remaining rocker arms, springs, washers and rocker shaft supports.
Remove the plugs from each end of the shaft, if necessary.