Inspection

1. CAMSHAFT
1) Measure the bend, and repair or replace if necessary.

Limit:
0.020 mm (0.0008 in)

2) Check journal for damage and wear. Replace if faulty.





3) Measure outside diameter of camshaft journal. If the journal diameter is not as specified, check the oil clearance.





4) Measurement of the camshaft journal oil clearance
(1) Clean the bearing caps and camshaft journals.
(2) Place the camshafts on the cylinder head. (Without installing valve rocker.)
(3) Place plastigauge across each of the camshaft journals.
(4) Install the bearing caps.

CAUTION: Do not turn the camshaft.

(5) Remove the bearing caps.
(6) Measure the widest point of the plastigauge on each journal.
If the oil clearance exceeds the limit, replace the camshaft. If necessary, replace the camshaft caps and cylinder head as a set.

Standard Oil clearance:
0.037 - 0.072 mm (0.0015 - 0.0028 in)

Limit: 0.10 mm (0.0039 in)

(7) Completely remove the plastigauge.





5) Check cam face condition; remove minor faults by grinding with oil stone. Measure the cam height H; replace if the limit has been exceeded.

Standard:
Intake 41.68-41.78 mm (1.6409 - 1.6449 in)
Exhaust 41.98-42.08 mm (1.6528 - 1.6567 in)
Limit:
Intake 41.52 mm (1.6346 in)
Exhaust 41.82 mm (1.6465 in)





6) Measure the thrust clearance of camshaft with dial gauge. If the clearance exceeds the limit, replace caps and cylinder head as a set. If necessary replace camshaft.

Standard:
0.040 - 0.080 mm (0.0016 - 0.0031 in)

Limit:
0.1 mm (0.004 in)