3-20. CAMSHAFT, CAMSHAFT GEAR, AND CAMSHAFT BUSHING REPLACEMENT
Measure camshaft (3) endplay using
a dial indicator positioned on a
machined surface of the camshaft
gear (1). Record indicator reading
To prevent tappets from dropping
out of the cylinder block when
camshaft (3) is removed, turn engine
stand so the crankshaft is facing up.
Remove camshaft gear (1) and
camshaft (3) as an assembly from
Remove two screws (4) and thrust
plate (5) from cylinder block.
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
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.
If necessary, remove camshaft
bushing (6) and all cam service
bushings using the universal
bushing installation tool.