Isuzu 4le1t — Fan belt tension inspection and adjustment
Adjustments · Fan belt / generator
For the Isuzu 4le1t, from the Isuzu service manual.
Applies to: Isuzu 4le1t, Isuzu 4LE1 engine
Before you start
- Recheck the tension of the belt after fixing the generator.
Parts for this job
Part numbers from the service-parts lists for Isuzu 4le1t, Isuzu 4LE1 engine. Verify against your serial number before ordering; some links are affiliate links.
Procedure
- Push between the fan pulley and the generator pulley with your finger (about 98 N).
- Loosen the adjusting plate and the mounting bolt of the generator.
- Adjust the adjusting bolt to the standard value and fix the generator at this position.
- Tighten the mounting bolts which you have loosened.
- Recheck the tension of the belt.
Tools required
- Finger pressure approx. 98 N {22 lb} Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Deflection approx. 8 — 10 mm {0.315 — 0.394}
- M8 bolt or nut: 18.6 — 28.4 N·m
- M10 bolt or nut: 41.2 — 55.0 N·m
Full service-parts list: Isuzu 4le1t →, Isuzu 4LE1 engine →
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.