Mitsubishi S12R — Belt Tension (Alternator Side) - Adjust
Adjustments · Belt / Alternator
For the Mitsubishi S12R, from the Mitsubishi owner's manual.
Applies to: Mitsubishi S12R
Before you start
- The lower nut on the adjusting rod has left-hand threads.
- Excessive belt tension can cause rapid wear of the alternator bearing and shorten belt service life.
Procedure
- Remove the belt cover.
- Loosen all retaining bolts of the alternator and adjusting rod.
- Loosen the upper and lower lock nuts on the adjusting rod.
- Turn the adjusting rod to adjust the belt tension.
- After adjusting deflection, fix the upper and lower lock nuts.
- Tighten all retaining bolts of the alternator and adjusting plate.
- Reinstall the belt cover and front cover.
Specs & values
- Deflection 10 to 15 mm [0.39 to 0.59 in.]
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.