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Engine - Updated V-Belt Tension Adjustment

85VW1
Applies To
ALL 1.8L GASOLINE
Group


27
Subject

Alternator V-Belt Tension


Part Identifier N/A
Key Points

Adjusting V-belt tension on engines equipped with new bracket assembly

B
Number

85-03

September 3, 1985
Alternator V-belt tension can now be adjusted by using a torque wrench and crowfoot in combination with the toothed rack (A), and tensioning gear (B), which has gradually been installed on 1.8 liter engines manufactured since April of 1985..



To adjust V-belt tension
- loosen bolts B, C, and pivot bolt in cradle (not shown)

Note

The securing bolts should be loose enough for the alternator to swing freely under its own weight.

- tension the V-belt by rotating the tensioning gear hex, using a torque wrench and crowfoot until the specified torque is obtained
- tighten tensioning gear center bolt (B) while maintaining tension spec with torque wrench
- tighten bolt (C) securing alternator bracket to attachment eye
- tighten alternator pivot bolt securing alternator to cradle
Torque Specifications

^ tensioning gear hex 9 +/- 1 N-m (6-7 ft.lbs.)
^ bolt B 35 N-m (26 ft.lbs.)
^ bolt C 20 N-m (15 ft.lbs.)
^ pivot bolt 26 N-m (19 ft.lbs.)

Note

Belt tension accuracy can be checked by using a belt tension gauge after performing the adjustment.