HARNESS AS-WIRING 2578097 - Caterpillar

1. Remove the rocker shaft bolts (1) and washers from the rocker shaft.2. Remove the rocker shaft assembly (2) from the cylinder head.3. Remove the push rods (3) from the engine.Install Rocker Shaft And Push Rods
1. Loosen the adjusting screws on the rocker arms for valve clearance. This will prevent a bent valve or push rod at installation. 2. Install push rods (2).3. Put rocker shaft (1) in position on the cylinder head.4. Put 5P3931 Anti-Seize Compound on the threads of the bolts that hold the rocker shaft in position. Install the rocker shaft bolts and washers. Make sure the rocker arms are on all the push rods.
The dowels (3) on each end of the rocker shaft assembly must be in alignment with the holes in the cylinder head assembly. If the dowels and holes are not in alignment when the rocker shaft assembly is tightened, damage to the rocker shaft assembly will be the result.
3304 ENGINE
3306 ENGINE5. Tighten the bolts for the rocker shaft as follows: a) Tighten bolts in number sequence to a torque of 115 lb.ft. (155 N m).b) Tighten bolts again in number sequence to a torque of 185 13 lb.ft. (250 17 N m).c) Tighten bolts again and for the last time in number sequence (hand tighten only) to a torque of 185 13 lb.ft. (250 17 N m).6. Make adjustment until the intake valve clearance is .015 in. (0.38 mm) and the exhaust valve clearance is .025 in. (0.64 mm). See VALVE CLEARANCE SETTING in TESTING AND ADJUSTING. Tighten the locknuts for the adjusting screws to a torque of 22 3 lb.ft. (28 4 N m).end by:a) install valve cover