Isuzu AA-6HK1T, Workshop Manual

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6A–64 ENGINE MECHANICAL
3. Install the fan belts.
4. Adjust the fan belt tension.
Refer to “Fan Belt Inspection” in this manual.
Disassembly
Ring Gear
1. Strike around the edges of the ring gear with a
hammer and brass bar to remove it.
Damper
1. Remove the damper from the crankshaft pulley.
Inspection and Repair
1. Inspect the ring gear for damage or excessive wear.
If the ring gear teeth are broken or excessively worn
the ring gear must be replaced.
2. Inspect the crankshaft damper for cracking or
separation. If any abnormality on the crankshaft
damper is found, inspect the crankshaft and the
flywheel fixing bolts.
Reassembly
Ring Gear
1. Install the ring gear to the flywheel.
1. Heat the ring gear evenly with a gas burner to
invite thermal expansion.
Do not allow the temperature of the gas burner to
exceed 200°C (390°F).
WARNING: Take care not to burn yourself on the
heated ring gear.
2. Install the ring gear when it is sufficiently heated.
The ring gear must be installed with the chamfer
facing outside.
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