Caterpillar — Belts - Inspect/Adjust/Replace
Maintenance · Fan drive belt and alternator belt
From a Caterpillar operator's manual covering: C27, C32, SXC1-Up. Check it applies to your exact model before use.
Applies to: Caterpillar C32, Caterpillar C27 engine, Caterpillar C32 engine
Before you start
- Replace drive belts for multiple groove pulleys in matched sets
Procedure
- Remove the belt guard.
- Loosen the pulley mounting bolt and adjusting nut.
- Move the pulley to adjust fan drive belt tension.
- Tighten the adjusting nut, then the mounting bolt.
- Reinstall the belt guard.
- For alternator belt: loosen mounting bolts (2),(3),(4) and adjusting nuts (1).
- Turn adjusting nuts (1) to increase or decrease tension.
- Tighten adjusting nuts and mounting bolts; reinstall the guard.
- Check new belt tension again after 30 minutes at rated rpm.
Full service-parts list: Caterpillar C32 →
Source: Caterpillar operator's 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.