This service manual contains diagnosis,
on-vehicle service, wiring diagrams, and component unit repair for 4HE1-TC
engine (4HE1-TCN & 4HE1-TCS).
Models Covered:
- Isuzu NPR,
NPR HD, NQR
- GMC Chevrolet W3500, W4500, W5500
Contents:
- Engine
- Isuzu Engine
- Cooling System
- Radiator
- Fan
- Fuel System
- Fuel Injection System
- Engine Electrical
- Emission and Electrical Diagnosis
- Exhaust
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