Camshaft and Valve Lifters

3-28. Camshaft and Valve Lifters

(2) Remove the plunger (1, fig. 3-33), spring

(2), screw (3), washer (4), and gear (5) from the

a. General. The camshaft is mounted in the

camshaft (6).

center of the crankcase, above the crankshaft.

(3) With the engine block (8) resting on its

Cams ground on the camshaft operate mushroom-

opposite end from the flywheel, pull the valve

type valve lifters. T h e mounting holes in the

tappets to outward position and with draw the

camshaft gear are staggered in such a manner that

camshaft from the flywheel end of the engine block,

the gear can be assembled to the shaft only one way

then remove the valve lifters (7).

which will automatically time the gear to the shaft.

c. Inspection.

The gear is also punch marks for timing to

(1) Inspect for worn or damaged parts

crankshaft, the camshaft must be removed before

(2) Replace parts that are worn or damaged.

the valve lifters can be removed.

d. Installation. Refer to figure 3-33 and install

b. Removal.

t h e valve lifter and camshaft in the reverse

(1) Remove the crankshaft (para 3-27).

procedure of removal.

Key to figure 3-33:

Camshaft Gear

1. Plunger

Camshaft

2. Spring

Valve lifter

3. Screw

4. Washer

Engine block

3-40