CAMSHAFT, GEAR AND BEARINGS.

(6) Start the gear cover attaching screws and,

(1) Remove engine and external parts as

with some tension on the lock washers of the gear cover

required.

to cylinder block screws, tighten the oil pan screws, also

(2) Remove valve tappet covers and, with a

the oil pan to gear cover screws. After these are tight,

valve spring compressor, lift valves so that all of the

draw up the gear cover screws. Keep seal concentric

valve tappets may be blocked up. A nail, if cut off to

with crankshaft.

15/16 inch may be used for this purpose. Lower spring

(7) Assemble front motor support, if removed.

compressor -carefully so nail does not snap out and

(8) Assemble fan drive pulley and starting

pinch fingers.

crank grab.

(9) Assemble governor to gear cover and

NOTE.

fasten in place with cap screws.

(10) Connect governor to carburetor control

If valves are removed, tappets must

rod.

still be raised to remove camshaft.

(11) Assemble hydraulic pump to gear cover.

Remove oil pump.

(12) Adjust camshaft, idler shaft and water

pump thrust screws. To adjust these screws, loosen the

(3) Pull the camshaft forward out of the -

lock nut and turn the screw until it contacts the thrust

engine. It may be necessary to turn the crankshaft

plugs in their respective shafts; then turn the screw out

slightly to permit the camshaft bearing journals to pass

approximately 1/8th turn and tighten the lock nut.

the crank throws.

(4) The camshaft gear is pressed off to the

6-79. CAMSHAFT, GEAR AND BEARINGS.

rear of the camshaft. Place suitable support under rear

of the front bearing journal and press gear back off of

a. Removal and disassembly.

gear seat. The gear can then be easily removed from

the camshaft.

(5) Although it is seldom necessary to remove

the thrust plunger from the camshaft, it may be removed

in the following manner: With a torch, quickly heat the

plunger to anneal it. Allow the plunger to cool, then drill

through the

Figure 6-31. Gear Cover Assembly

105