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Isuzu NKR 4J Series - Water Pump Inspection

Isuzu NKR 4J Series
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ENGINE COOLING 6B - 7
5. AC Generator Drive Belt
Loosen AC Generator mounting bolt (under side) and
adjust plate lock bolt, and remove the drive belt.
6. Crankshaft Damper Pulley
7. Timing Pulley Upper Cover
8. Timing Pulley Lower Cover
9. Water Pump Assembly
Remove the O-ring
INSPECTION
Make necessary parts replacement if extreme wear or
damage is found during inspection. Should any of the
following problems occur, the entire water pump
assembly must be replaced.
Cracks in the coolant pump body
Coolant leakage from the seal unit
Play or abnormal noise in the bearing
Cracks or corrosion in the impeller
6B-6-1.tif
6B-6-2.tif
6B-6-3.tif

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