Mitsubishi S12A2 — Adjust V-belt tension
Adjustments · V-belts
For the Mitsubishi S12A2, from the Mitsubishi owner's manual.
Applies to: Mitsubishi S12A2, Mitsubishi S12A2 engine
Before you start
- Never adjust the V-belts while the engine is running.
- Change the belts if cracked, frayed or cut.
- Keep belts clear of oil or grease.
Procedure
- Measure belt deflection midway between the pulleys.
- Apply approximately 98 to 147 N (10 to 15 kgf) [22 to 33 lbf] force.
- Deflection should be approximately 10 to 15 mm [0.4 to 0.6 in.]; adjust if incorrect.
- For fan belt: remove belt cover, loosen fan-bracket mounting bolts, turn adjusting rod, tighten bolts.
- For water-pump belt: remove belt cover, loosen tension-bracket bolts, turn tension bolt, tighten bolts.
- For alternator: remove belt cover, loosen alternator mounting bolts, turn adjusting rod, tighten bolts.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Deflection 10 to 15 mm [0.4 to 0.6 in.]
Full service-parts list: Mitsubishi S12A2 →
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.