CONTROL GP-ELECTRONIC 4926331 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 5P-7307 Engine Turning Tool 1
B FT-1322 Lever Assembly 1 Start By:
Remove the transformers.
Illustration 1 g00785957
Use Tooling (A) to rotate the crankshaft in order to release the pressure on the rocker arms.
Use Tooling (B) to remove pushrods (1).
Illustration 2 g00785959
Remove valve bridges (3). Put identification on the valve bridges for the location.
Remove bolts (2) and rocker shaft assembly (4). Installation Procedure
Table 2
Required Tools
Tool Part Number Part Description Qty
A 5P-7307 Engine Turning Tool 1
B FT-1322 Lever Assembly 1
Illustration 3 g01422755
Install rocker shaft assembly (4) in position on the engine.
Use clean engine oil to lubricate the bolts (2) that hold the rocker shaft assemblies in position. Install the bolts (2) on the rocker shaft assemblies.
Use the following procedure to tighten the bolts.
Illustration 4 g00789975
Tighten bolts 3 through 8 in the numerical sequence to 270 25 N m (199 18 lb ft).
Tighten bolts 3 through 8 in a numerical sequence to a torque of 450 20 N m (332 15 lb ft).
Do Step 3b again in order to ensure that the bolts are tightened to the correct torque.
Illustration 5 g01422756
Lubricate the dowels of the valve bridge with clean engine oil. Install valve bridges (3) in the original positions on the engine. Use the following procedure to adjust the bridges.
Put clean engine oil in the lubrication passage of the bridge.
Back off the adjustment screw. Press straight down on the top contact surface of the bridge with a force of 4.5 to 45 N (1.0 to 10 lb).
Turn the adjustment screw clockwise. An oil film in the lubrication passage of the valve bridge will move inward. The oil film indicates that the adjustment screw has engaged the valve stem.
Turn the screw for an additional 20° to 35° degrees (1/3 to 1/2 flat). The additional rotations will straighten the dowel in the guide, and compensate for the slack in the threads.
Hold the adjustment screw in this position. Tighten the locknut to a torque of 30 4 N m (22 3 lb ft).
Use Tooling (A) to ensure that there will be no pressure against pushrod (1) and the rocker arm. Use Tooling (B) to pull rocker arm away from the pushrod. Install pushrod (1) in position under the rocker arm. If the rocker arm cannot be moved enough to install the pushrod in position, turn the crankshaft with Tooling (A).
Adjust the valves in order to have a clearance of 0.38 0.10 mm (0.015 0.004 inch) for inlet and 1.02 0.10 mm (0.04 0.004 inch) for exhaust. Refer to Test and Adjusting, "Engine Valve Lash". End By:
Install the transformers.