BELT-SERPENTINE 3748476 - Caterpillar

1. Loosen adjustment screws (3) to have maximum valve clearance.2. Remove six bolts (1) and washers that hold the rocker shaft in position.3. Remove rocker shaft (2). 4. Remove push rods (4).Install Rocker Shaft And Push Rods
1. Install push rods (2).2. Put rocker shaft (1) in position on the cylinder head.
The dowel pins on each end of rocker shaft and arms must be in alignment with the holes in cylinder head. If the pins and holes are not in alignment when the bolts are tightened, damage to the rocker shaft and arms can be the result.
3. Put 5P3931 Anti-Seize Compound on the threads of the bolts for the rocker shaft. Install the bolts and washers. 4. Tighten the bolts 3, 4, 5, 6, 7 and 8 in number sequence shown as follows: a) Tighten the bolts in number sequence to 115 lb.ft. (155 N m).b) Tighten the bolts in number sequence to 185 13 lb.ft. (250 17 N m).c) Tighten the bolts again (hand torque only) in number sequence to 185 13 lb.ft. (250 17 N m).5. Make an adjustment to the rocker arms so the clearance for inlet valves will be .015 in. (0.38 mm) and the clearance for exhaust valves will be .025 in. (0.64 mm).end by: a) install valve cover