Camshaft

Both camshafts should be checked for runout and also for wear of cams and journals if the engine has been noted as giving abnormal noise or vibration or lack power output. Any of these conditions may be caused by camshafts worn down or distorted to the service limit.

The exhaust camshaft can be distinguished from that of the intake by the embossed letters " EX " (for exhaust) as against letters " IN" (for intake).

Pai nted Red

VALVE TIMING

CAM WEAR

The limit of cam wear is specified for both intake and exhaust cams in terms of cam hight (fl), which is to be measured with a micrometer. R eplace camshafts if found worn down to the limit.

09900-20202: Micrometer (25 - 50 mm) Cam height (fl)

Intake cams: 32.840 mm (1.2929 in)

Service Limit

Exhaust cams: 32.540 mm (1.2811 in)