Caterpillar C27 / C32 — Belts - Inspect/Adjust/Replace
Maintenance
For the Caterpillar C27 / C32, from the Caterpillar owner's manual.
Applies to: Caterpillar C32
Before you start
- Replace belts that are worn or damaged. For multiple drive belts, replace belts in matched sets.
Procedure
- Remove the belt guard. Inspect the condition and adjustment of the alternator belts and accessory drive belts.
- Check belt tension by applying 110 N (25 lb ft) of force midway between the pulleys; a correctly adjusted belt deflects 9 mm to 15 mm.
- To adjust an alternator belt, slightly loosen mounting bolt (2), mounting bolt (3) and adjusting nut (1).
- Move the pulley in order to adjust the belt tension.
- Tighten the adjusting nuts and mounting bolts; refer to the Specifications, SENR3130 for proper torques.
- Install the belt guard. If new belts are installed, check the belt tension again after 30 minutes at rated rpm.
Specs & values
- 110 N (25 lb ft) force for belt tension check
- 9 mm (0.35 inch) to 15 mm (0.59 inch) deflection
Full service-parts list: Caterpillar C32 →
Source: Caterpillar owner'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.