Caterpillar — Belts - Adjusting the Alternator Belt
Adjustments
From a Caterpillar owner's manual covering: 3508, 3512, 3512B, 3516, 3516B. Check it applies to your exact model before use.
Applies to: Caterpillar 3508, Caterpillar 3512, Caterpillar 3512B, Caterpillar 3516, Caterpillar 3516B
Procedure
- Remove the drive belt guard.
- Loosen mounting bolt (1), adjusting nuts (2) and mounting bolt (3).
- Turn adjusting nuts (2) to increase or decrease drive belt tension.
- Tighten adjusting nuts (2), mounting bolt (3), and mounting bolt (1).
- Reinstall the drive belt guard.
- If new belts installed, recheck tension after 30 minutes at rated rpm.
Specs & values
- See Service Manual, Specifications for proper torque
Full service-parts list: Caterpillar 3508 →, Caterpillar 3512 →, Caterpillar 3512B →, Caterpillar 3516 →, Caterpillar 3516B →
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.