MUFFLER-AS-YM 3731910 - Caterpillar

Disassembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 6V-0083 Emery Polishing Paper 1 Start By:
Remove the rocker shaft and the pushrods. Refer to Disassembly and Assembly, "Rocker Shaft and Pushrod - Remove".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Note: For information on reusability of components of the rocker shaft, refer to Guideline For Reusable Parts And Salvage Operations, SEBF8267, "Rocker Arms and Rocker Arm Shafts for 3114 and 3116 Engines".
Illustration 1 g00629612
Remove support bracket (1) from rocker shaft assembly (4).
Remove valve rocker arms (2) and unit injector rocker arm (3) from rocker shaft assembly (4). Note: Do not force the rocker arms from the rocker shaft assembly. If necessary, use a piece of Tooling (A) to lightly buff the surface of the shaft to aid in removal .
Check the adjustment screws on valve rocker arms (2) and unit injector rocker arm (3) for damage.
Inspect rocker shaft assembly (4) for scratches and cracks.
Illustration 2 g00630277
Inspect bearing (5) on unit injector rocker arm (3). The bore in the rocker arm is 24.808 0.20 mm (0.9767 0.0079 inch). Refer to Specification, "Valve Rocker Arm and Lifters". Replace the bearing, if necessary.
Ensure that button (6) on unit injector rocker arm (3) is not damaged. Also ensure that the retaining ring for button (6) is in place.