CAMSHAFT, CAMSHAFT GEAR, AND CAMSHAFT BUSHING REPLACEMENT - continued

TM 10-3930-673-34

3-20. CAMSHAFT, CAMSHAFT GEAR, AND CAMSHAFT BUSHING REPLACEMENT

(CONT)

(c)

Measure camshaft (3) endplay using

a dial indicator positioned on a

machined surface of the camshaft

gear (1). Record indicator reading

for reference.

(2)

To prevent tappets from dropping

out of the cylinder block when

camshaft (3) is removed, turn engine

stand so the crankshaft is facing up.

(3)

Remove camshaft gear (1) and

camshaft (3) as an assembly from

cylinder block.

(a)

Remove two screws (4) and thrust

plate (5) from cylinder block.

(b)

Slowly and carefully remove

camshaft (3) and camshaft gear (1),

being careful not to damage the

camshaft lobes and bearing

journals, and camshaft bores in the

cylinder block. It may be necessary

to slowly turn the camshaft, during

removal, to allow lobes to clear the

tappets.

NOTE

If a new camshaft is to be installed,

or if the camshaft bushing is

damaged or dimensions exceed

specified tolerance (see Inspection),

the camshaft bushing, and all

service bushings that may be

installed in the other cam bores,

must be replaced.

(4)

If necessary, remove camshaft

bushing (6) and all cam service

bushings using the universal

bushing installation tool.

TR01774

3-126