Caterpillar C15 / C15 Generator Set — Belts - Inspect/Adjust/Replace (Adjusting the Alternator Belt)
Adjustments · Alternator drive belt
For the Caterpillar C15 / C15 Generator Set, from the Caterpillar owner's manual.
Applies to: Caterpillar C15, Caterpillar C1.5 engine
Before you start
- If new drive belts are installed, check the drive belt tension again after 30 minutes of engine operation at the rated rpm.
Parts for this job
Part numbers from the service-parts list for Caterpillar C15. Verify against your serial number before ordering; some links are affiliate links.
Procedure
- Remove the drive belt guard.
- Loosen mounting bolt (1), adjusting nuts (2) and mounting bolt (3).
- Turn adjusting nuts (2) in order to increase or decrease the drive belt tension.
- Tighten adjusting nuts (2). Tighten mounting bolt (3). Tighten mounting bolt (1).
- Reinstall the drive belt guard.
Specs & values
- For the proper torque, see the Service Manual, Specifications module.
Full service-parts list: Caterpillar C15 →
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.