Isuzu NPR 4J Series User Manual

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

Isuzu NPR 4J Series Specifications

General

Brand	Isuzu
Model	NPR 4J Series
Category	Engine
Language	English