Isuzu AA-6HK1T, Workshop Manual

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ENGINE MECHANICAL 6A–29
Rocker Arm Bushing Inside Diameter
Use either a vernier caliper or a dial indicator to measure
the rocker arm bushing inside diameter.
Rocker arm bushing inside diameter
Standard: 22.010 – 22.035 mm (0.867 – 0.868 in.)
Rocker arm and rocker arm shaft clearance
Standard: 0.01 – 0.056 mm (0.0004 – 0.0022 in.)
Limit: 0.2 mm (0.0079 in.)
Rocker arm shaft and rocker arm clearance
Standard: 0.010 – 0.056 mm (0.0004 – 0.0022 in)
Limit: 0.20 mm (0.008 in)
Check that the rocker arm and rocker arm shaft oil port
are free of obstructions.
If necessary, use compressed air to clean the rocker
arm and rocker arm shaft oil port.
WARNING: Compressed air can cause personal
injury when used for cleaning. Wear safety glasses
and protective clothing.
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