Figure 7-25. Installing camshaft drive shaft.

1. Slowly turn camshaft (A) clockwise, as viewed from

flywheel end, until No. 6R intake valve has just closed.

2. Closing point is determined by trying to rotate the swivel

pad (B) on the intake valve adjusting screw while the

camshaft is being rotated. The valve is closed the in-

stant the swivel pad is free to move.

Figure 7-24. Determining closing point of

No. 6 intake valve.

Note. Do not force camshaft drive shaft. The

shaft is machined with a 24-tooth spline on inner

end, and a 28-tooth spline on outer end. This

difference in number of teeth provides a vernier

effect which makes it possible to index the drive

shaft so it will engage the splines of the camshaft

drive

gearshaft

and

camshaft

drive

bevel

gearshaft at some point within 360 degrees. An

setting is then provided

without

accurate

changing the relationship of the camshaft and

crankshaft.

1. Maintain the position of camshaft as set in figure 7-24

and the crankshaft position set in figure 7-21.

2 . Insert camshaft drive shaft (A), using mechanical

puller-5120-678-5282,

and

mate

splines

drive

shaft with splines in camshaft drive bevel gearshaft.

When splines of drive shaft do not mate with splines of

c a m s h a f t gearshaft, withdraw drive shaft and turn

slightly before again attempting insertion.

It may be necessary to repeat this

Note.

operation a number of times before splines will

mate and allow drive shaft to be inserted into

position.

Figure 7-25. Installing camshaft drive shaft.

7-19