3116 and 3126 Truck Engines Rocker Shaft – Disassemble

Disassembly Procedure
Start By:

A.Remove the rocker shaft and the pushrods. Refer to Disassembly and Assembly, “Rocker Shaft and Pushrod – Remove”.
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 g00995462

1.Remove support bracket (1) from rocker shaft assembly (2) .

2.Remove valve rocker arm (3), spacer (4), and valve rocker arm (5) from rocker shaft assembly (2) .
Note: Do not force the rocker arms from the rocker shaft assembly. If necessary, use Tooling (A) to lightly buff the surface of the shaft to aid in removal .

3.Check the adjustment screws on valve rocker arm (3) and valve rocker arm (5) for damage.

4.Inspect rocker shaft assembly (2) for scratches and cracks.

Illustration 2 g00995489

5.Inspect bearing (7) on valve rocker arm. 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.

6.Ensure that button (6) on valve rocker arm (3) is not damaged. Also ensure that the retaining ring for button (6) is in place.

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