HEAD 3845133 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A(1) 9U-6198 Crankshaft Turning Tool 1
A(2) 5P-7306 Housing 1
5P-7305 Engine Turning Tool 1
B 298-5564 T40 Torx Socket 1
C 227-4389 E10 Torx Socket 1
(1) The Crankshaft Turning Tool is used on the front pulley.
(2) This Tool is used in the aperture for the electric starting motor.Start By:
Remove the valve mechanism cover. Refer to Disassembly and Assembly, "Valve Mechanism Cover - Remove and Install" for the correct procedure. Note: Either Tooling (A) can be used. Use the Tooling that is most suitable.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Use Tooling (A) in order to rotate the crankshaft in a clockwise direction and position the crankshaft the safe position. Refer to System Operation, Testing and Adjusting, "Position the Valve Mechanism Before Maintenance Procedures" for the correct procedure.
Illustration 1 g03703568
Use Tooling (B) in order to loosen threaded inserts (2) on all rocker arms (1). Unscrew threaded inserts (2) on all rocker arms (1) until all valves are fully closed. Note: Ensure that ALL threaded inserts are fully unscrewed.
Illustration 2 g03703569
Illustration 3 g03703570
Illustration 4 g03703575
Sequence for tightening the bolts for the rocker shaft assembly
Use Tooling (C) to loosen Torx screws (5) in the reverse numerical order to the tightening sequence. Refer to the Illustration 4.
Loosen Torx screws (4) from sufficiently in order to allow removal of rocker shaft assembly (6). Note: Note Position (X) of different length Torx screws (4).
Remove rocker shaft assembly (5) from the cylinder head. Ensure that rocker shaft assembly (5) does not come into contact with the electronic unit injector identification tag (7).
Place an identification mark on pushrods (6) 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.
Make a temporary mark on valve bridges (3) in order to show the location and the orientation. Remove the valve bridges from the cylinder head. Note: Identification will ensure that the valve bridges can be reinstalled in the original location and the original orientation. Do not interchange the location or the orientation of used valve bridges.