2-54 ROCKER LEVER ADJUST CONT). ,
CROSSHEAD VALVE ADJUSTMENT:
Crosshead valve adjustment must always be made before attempting to adjust the rocker lever
Align A valve set mark with pointer on gear cover.
With both valves closed on cylinder No. 5, loosen
cross-head adjusting screw locknuts (1) on intake and
exhaust valve crossheads (2) for cylinder No. 5.
The following procedures are used to adjust both the intake and the exhaust crossheads.
Turn adjusting screw out at least one turn.
Hold crosshead down against its mating valve stems.
Turn adjusting screw in until it touches top of valve stem but does not raise crosshead. Hold adjusting screw in this
The adjusting screw must not turn when locknut is tightened to its torque value.
Tighten locknut to 30 ft-lbs (40 N.m) torque.
Adjust intake and exhaust valves on No. 5 cylinder before rotating accessory drive to next valve set mark.
Continue adjustments until all crosshead valves have been adjusted