Isuzu AA-6HK1T, Workshop Manual

Page: 88 / 242

ENGINE MECHANICAL 6A–37
1. Remove the camshaft gear.
•
Check the gear for excessive wear or damage.
•
Use an universal puller to pull out the camshaft
gear.
Inspection and Repair
Make the necessary adjustments, repairs, and part
replacements if excessive wear or damage is
discovered during inspection.
1. Measure the dimension between the camshaft thrust
surface and the camshaft gear.
Camshaft and camshaft gear dimension
Standard: 25.015 – 28.055 mm (1.103 – 1.105 in)
2. Use a micrometer to measure each camshaft journal
diameter in two directions ((1) and (2)). If the
measured value is less than the specified limit, the
camshaft must be replaced.
Camshaft journal diameter
Standard: 39.950 – 39.975 mm (1.5728 – 1.5738 in.)
Limit: 39.85 mm (1.5689 in.)
3. Measure the cam height A and B with a micrometer.
If the measured value is less than the specified limit,
the camshaft must be replaced.
Cam height (A – B)
Inlet
Standard: 7.851 mm (0.3091 in.)
Limit: 7.351 mm (0.2894 in.)
Exhaust
Standard: 9.540 mm (0.3756 in.)
Limit: 9.040 mm (0.3559 in.)
014EY00174
014EY00105
2
1
014EY00078
B
A
014EY00079