Isuzu 4HK1 / 6HK1 — Turbocharger and exhaust manifold removal

Repair & overhaul

For the Isuzu 4HK1 / 6HK1, from the Isuzu service manual.

Applies to: Isuzu 4HK1, Isuzu 6HK1

Procedure

1. Drain coolant (4HK1 only).
2. Remove air intake duct from turbocharger and air cleaner.
3. Remove charge air pipe from turbocharger and charge air cooler.
4. Disconnect front exhaust pipe.
5. Remove EGR pipe.
6. Remove oil feed pipe and oil return pipe.
7. Remove water feed pipe and water return pipe (4HK1 only).
8. Remove heat protector.
9. Remove exhaust adapter bolts.
10. Remove four turbocharger clamping nuts.
11. Remove turbocharger from exhaust manifold.
12. Remove exhaust manifold.

Full service-parts list: Isuzu 4HK1 →, Isuzu 6HK1 →

Source: Isuzu service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

More Isuzu repair guides →