Isuzu AA-6HK1T, Workshop Manual

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6A–38 ENGINE MECHANICAL
4. Mount the camshaft on V-blocks.
Measure the run-out with a dial indicator at the No. 4
camshaft journal.
If the measured value exceeds the specified limit, the
camshaft must be replaced.
Camshaft run-out
Standard: 0.025 mm (0.0010 in.)
Limit: 0.05 mm (0.0020 in.)
5. Use an inside dial indicator to measure the camshaft
bearing inside diameter.
Camshaft bearing inside diameter
Standard: 40.0 – 40.037 mm (1.575 – 1.576 in.)
If the clearance between the camshaft bearing inside
diameter and the journal exceeds the specified limit,
the camshaft bearing must be replaced.
Camshaft bearing clearance
Standard: 0.025 – 0.087 mm (0.00098 – 0.00342 in.)
Limit: 0.15 mm (0.0059 in.)
Reassembly
1. Install the gear alignment pin to the camshaft.
2. Install the camshaft gear to the camshaft.
1. The gear hub large side must be facing the
camshaft.
2. Apply engine oil to the camshaft bolt threads and
the setting faces.
3. Tighten the camshaft gear bolt to the specified
torque.
Torque : 142 N·m (14.5 kgm/105 lbft)
014EY00163
014EY00164