Alternator Belt - Adjustment Procedure Revised

91audi01

Group: 27

Number: 9101

Date: March, 1991



Subject: Revised Alternator Belt Adjustment Procedure
80/90 - 1988-91 Coupe - 1990-91
100/200 - 1989-91

Model(s): For engines with toothed rack on alternator bracket





(Supersedes Technical Bulletin, Group 27, Number 90-02, dated October 31, 1990)

Alternator belt, adjusting

Alternator V-belt tension can be adjusted by using a torque wrench and crowfoot in combination with the toothed rack, and tensioning gear (C).

- loosen mounting bolts A and B (for toothed rack) by one turn.

- loosen alternator pivot bolt in cradle (not shown).

Note

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

- rotate tensioning gear C until proper belt deflection is obtained.

^ tensioning gear C torque specifications:

New belt 8 N-m (6 ft.lb.)
Used belt 4 N-m (3 ft.lb.)

- tighten bolt B while maintaining proper torque on gear C

^ 35 N-m (26 ft.lb.)

- verify v-belt deflection at center point of belt between pulleys

^ new belt 2.0 mm (5/64 in.) approximately

^ used belt 5.0 mm (13/64 in.) approximately

- tighten bolt A

^ 20 N-m (15 ft.lb.)

- tighten alternator pivot bolt (not shown)

^ 35 N-m (26 ft.lb.)


Note

To ensure proper v-belt tension, use appropriate range (low range) torque wrench.