Vanden Plas L6-4.0L (1990)
Drive Belt: Technical Service Bulletins
Alternator Drive Belt - Tension Adjustment
86-97
Alternator Drive Belt - Tension Adjustment
MODEL:
Sedan from 88 MY,
XJ-S from 89 MY
DATE: 8/91
Supersedes: Technical Bulletin 86-63
ISSUE:
Alternator drive belt tension information in Sedan and XJS Range service manuals has been superseded.
ACTION:
When adjusting alternator belt tension, use the following updated information:
Revised Tension Specification:
Condition
Sedan
XJS
New belt
138 lbs.
79 lbs.
Used belt
115 lbs.
70 lbs.
Procedure:
1.
Raise vehicle on a lift.
2.
From above, check belt tension using a belt tension gauge, fig. 1 (refer to Special Tools Information).
3.
Remove the gauge.
4.
If necessary, adjust the belt and check the tension.
5.
Repeat the procedure until the tension is correct.
6.
Remove the gauge and make sure that all fasteners are tight.
7.
Lower the vehicle.
