NUT-FULL 1B4203 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 227-4389 E10 Torx Socket 1
B 934-913 Rocker Assembly Tool 4 Start By:
Remove the valve mechanism cover. Refer to Disassembly and Assembly, "Valve Mechanism Cover - Remove and Install".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g01323013
Typical example
Use Tooling (A) to progressively loosen torx screws (1). Begin at the ends of the rocker shaft assembly and work toward the center. Note: To avoid distortion of the rocker shaft assembly, each torx screw should be loosened by a quarter of a turn at one time. Repeat the procedure until all torx screws are loosened.
Remove torx screws (1) from rocker shaft assembly (2).
If the rocker shaft will not be disassembled, install Tooling (B) between each pair of rocker arms.
Remove rocker shaft assembly (2) from the cylinder head.
Illustration 2 g01359104
Typical example
Place an identification mark on pushrods (3) in order to show the location. Remove the pushrods from the cylinder head. Note: Identification will ensure that the pushrods can be reinstalled in the original positions. Do not interchange the positions of used pushrods.