Isuzu 4ja1, Workshop Manual

Page: 75 / 564

ENGINE MECHANICAL 6A – 53
20. Camshaft Timing Gear
1. Use a dial indicator to measure the camshaft end play.
This must be done before removing the camshaft
gear.
If the camshaft end play exceeds the specified limit,
the thrust plate must be replaced.
Camshaft End Play
mm (in)
Standard Limit
0.050 - 0.114
(0.002 - 0.0044)
0.20
(0.008)
2. Remove the camshaft timing gear bolt from the
camshaft.
Note:
Hold the camshaft stationary to prevent the camshaft
from turning.
3. Remove the sensor rotor plate.
4. Use the universal puller to pull out the camshaft
timing gear.
Universal Puller: 5-8521-0002-0
5. Remove the thrust plate.
21. Camshaft Thrust Plate
22. Camshaft
Jiggle the camshaft with your hand as you pull it free from
the front of the engine.
23. Timing Gear Case
24. Cylinder Body Rear Plate
25. Piston Cooling Oil Jet
The oiling jet uses thin steel tubing which is easily bent.
Accidental contact between the oiling jet and the cylinder
body, piston, or a tool will damage the oiling jet.
Never attempt to repair a damaged oiling jet. Replace it
with a new one.
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901R100008
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