valve rocker shaft oil pipe adapter
cager rocker shaft
The distributor drive shaft is lubricated with oil fed from the exhaust rocker shaft via a hollow bolt.
Then out of the steering of the design strength check, mainly steel ball and the raceway contact stress, bending stress and tooth fan rocker shaft diameter determined.
The cylinder head carries the valves, valve springs and the rockers on the rocker shaft, this part of the valve gear being worked by the push-rods.