1. Measure the bend, and repair or replace if necessary.
Service limit:
0.020 mm (0.0008 in)
2. Check the journal for damage and wear. Replace if faulty.
3. Measure the outside diameter of camshaft journal. If the journal diameter is not within specification, check the oil clearance.
Camshaft journal:
Standard
22.946 — 22.963 mm (0.9034 — 0.9041 in)
4. Measure the oil clearance of camshaft journal.
(1) Clean the camshaft cap and the camshaft journal of the cylinder head.
(2) Place the camshaft on cylinder head.
(3) Place a plastigauge across each camshaft journals.
(4) Gradually tighten the camshaft cap in at least two stages in the numerical order shown in the figure, then tighten to specified torque. Do not turn the camshaft.
Tightening torque:
9.75 N·m (1.0 kgf-m, 7.2 ft-lb)
(5) Remove the camshaft cap.
(6) Measure the widest point of the plastigauge on each journal. If oil clearance exceeds the standard, replace the camshaft. If necessary, replace the camshaft caps and cylinder head as a set.
Standard:
0.037 — 0.072 mm (0.0015 — 0.0028 in)
(7) Completely remove the plastigauge.
5. Check the cam face condition; remove the minor faults by grinding with oil stone. Measure the cam height H. If it exceeds the standard or offset wear occurs, replace it.
Cam height H:
Standard
Intake
36.46 — 36.56 mm (1.4354 — 1.4394 in)
Exhaust
36.58 — 36.68 mm (1.4402 — 1.4441 in)
Cam base circle diameter A:
32.0 mm (1.2598 in)
6. Measure the thrust clearance of camshaft with setting the dial gauge at end of camshaft. If the thrust clearance is not within the standard or there is offset wear, replace the camshaft caps and cylinder head as a set. If necessary, replace the camshaft.
Standard:
0.045 — 0.105 mm (0.0018 — 0.0041 in)
