Repair Procedures: Inspection: Camshaft

Measure the height of the cam lobe using a micrometer and check the surface of the cam lob for wear and tear. If necessary, replace the camshaft.
Cam height

Intake: 44.15 mm (1.738 in.)

Exhaust: 43.55 mm (1.715 in.)

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Check the surface of the camshaft journal for wear and tear. If the camshaft journal is excessively damaged, replace the camshaft.

Inspect the camshaft journal clearance.

Clean the camshaft journals and bearing caps.
Place the camshafts in the cylinder head.

Lay a strip of plastigauge across each of the camshaft journals.

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Install the bearing caps and tighten the bolts to the specified torque.
Tightening torque

M6 bolts:

11.8 - 13.7N.m (1.2 - 1.4kgf.m, 8.7 - 10.1lb.ft)

M8 bolts:

18.6 - 22.6N.m (1.9 - 2.3kgf.m, 13.7 - 16.6lb.ft)

NOTE: Do not turn the camshaft.
Remove the bearing caps.
Measure the plastigauge at the widest point. If the clearance is greater than the specification, replace the camshaft. If necessary, replace the bearing caps and the cylinder head as a set.
Camshaft bearing cap oil clearance

Standard:

0.027 - 0.058 mm (0.0011 - 0.0023 in.)

Limit: 0.1 mm (0.0039 in.)

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Inspect the camshaft end play.

Inspect the camshaft end play.

Measure the end play while moving the camshaft back and forth using a dial gauge. If the end play is greater than the specification, replace the camshaft. If necessary, replace the bearing caps and the cylinder head as a set.

Camshaft end play

Standard: 0.1 - 0.2 mm (0.0039 - 0.0079 in.)

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Remove the camshafts.