SHAFT GP-PUMP DRIVE 5T4926 - Caterpillar

Installation Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 235-0032 Valve Lash Gauge Gp 1
B 298-5564 T40 Torx Socket 1
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Clean the valve bridges. Inspect the valve bridges for wear or damage. Replace any valve bridges that are worn or damaged.
Illustration 1 g03412377
Lubricate valve bridges (4) with clean engine oil.
Illustration 2 g03412379
Failure to ensure that ALL valve bridges are correctly seated onto the valve stems will cause interference between the pistons and the valves, resulting in damage to the engine.
Install valve bridges (4) to the cylinder head. Note: Install used valve bridges in the original location and in the original orientation. Ensure that the valve bridges are correctly seated on the valves. New valve bridges may be installed in either orientation.The electronic unit injector is not shown for clarity.
Clean the pushrods. Inspect the pushrods for wear or damage. Replace any pushrods that are worn or damaged.
Apply clean engine lubricating oil to both ends of pushrods (3). Install the pushrods to the engine with the cup upward. Note: Ensure that pushrods (3) are installed in the original location and that the ball end of each pushrod is correctly seated in the valve lifters.
Illustration 3 g01340040
Illustration 4 g01340044
Illustration 5 g03373790
Tightening sequence for rocker shaft
Ensure that the rocker shaft assembly is clean and free from wear or damage. Install torx screws (1) in the rocker shaft.
Position rocker shaft assembly (2) onto the cylinder head. The retaining clip (6) should face the front of the engine. Note: Ensure that adjustment screws (5) are correctly seated in ends of pushrods (3).
Gradually tighten torx screws (1). To avoid distortion of rocker shaft assembly (2), tighten the torx screws in the sequences shown in Illustration 5. Tighten torx screws (1) to a torque of 35 N m (26 lb ft).
Illustration 6 g01340045
Use Tooling (A) in order to check the valve lash. Refer to System Operation, Testing and Adjusting, "Engine Valve Lash - Inspect/Adjust".
If necessary, use Tooling (A) and Tooling (B) in order to adjust the valve lash. Refer to System Operation, Testing and Adjusting, "Engine Valve Lash - Inspect/Adjust" for the correct procedure. End By:
Install the valve mechanism cover. Refer to Disassembly and Assembly, "Valve Mechanism Cover - Remove and Install" for the correct procedure.