Mitsubishi — Adjusting V-belt tension (Alternator side)
Adjustments
From a Mitsubishi owner's manual — check it applies to your exact model before use.
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Before you start
- If defects such as cuts or surface separations are found on V-belt, replace V-belt.
- Keep oil and grease away from the belt.
Procedure
- Remove alternator front cover and V-belt cover.
- Loosen all the retaining bolts on the alternator and adjusting rod.
- Loosen the upper and lower lock nuts on the adjusting rod. The lower nut has left-hand threads.
- Turn the adjusting rod to adjust V-belt tension.
- After the tension adjustment, tighten the upper and lower lock nuts.
- Tighten all the retaining bolts on the alternator and adjusting rod.
- Reinstall belt cover and alternator front cover.
Tools required
- Wrench Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- V-belt deflection: 7 ± 1 mm for new belt; 9 ± 1 mm for retightening, with 49 ± 5 N force midway between pulleys
Source: Mitsubishi 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.