COUPLING 2W6965 - Caterpillar

Illustration 1 g01568474
(1) Rocker arm
(4) Camshaft
(5) Valve bridge (2) Torque for the nuts ... 30 7 N m (22 5 lb ft) (3) Dimensions for the rocker shaft assembly Diameter of new rocker arm shaft ... 40.000 0.010 mm (1.5748 0.0004 inch)Bore in new rocker arm for rocker arm shaft ... 40.065 0.015 mm (1.5774 0.0006 inch)Note: Refer to Testing and Adjusting, "Engine Valve Lash - Inspect/Adjust" for the correct procedure on setting the engine valve lash. (A) Dimensions for valve lash Inlet ... 0.38 0.08 mm (0.015 0.003 inch)Exhaust ... 0.76 0.08 mm (0.030 0.003 inch)
Illustration 2 g01568478
Left side view of engine
Illustration 3 g01568479
Right side view of engine
Illustration 4 g01568481
Tightening sequence
Use the following procedure to tighten the bolts (6) for the rocker arm that is shown in Illustration 4:
Tighten the bolts for the rocker arm in the sequence 2, 3, 1, 4 to 55 5 N m (41 4 lb ft).
Again tighten the bolts for the rocker arm in the sequence 2, 3, 1, 4 to an additional angle of 60 5 degrees.