Drive Belt Adjustments; Alternator And Fan Adjustment - Jeep 1987 Wrangler Workshop Manual

ENGINES
JP1
COOLING SYSTEMS
DRIVE 1ELT ADJUSTMENTS
General Information
After the need for adjustment has been
determined, drive belts are adjusted by pivoting
the driven component in its mount to achieve the
specified tension.
In some applications, a belt may either drive
several components or a single drive belt
(serpentine) is used to drive all the components.
It is necessary to loosen and pivot only one
component.
Locate the drive belt that is to be tested for the
correct tension.
Test the tension with Belt Tension Gauge
J-23600. If accessibility is limited (e.g., A/C
compressor drive belt) use J-29550. Use Gauge
J-23600-B, for serpentine drive belts.
If necessary, adjust the drive belt.
Re-test tension after the adjustment.
Alternator and Fan Adjustment: (Without Air
Conditioner) - All Engines
Position Tension Gauge Tool J-23600-B on the
upper section of the belt midway between the
alternator pulley and the fan pulley.
T e s t the belt t e n s i o n a c c o r d i n g to the
manufacturer's instructions.
Adjust the belt tension to the specification if less
than 400 N (90 Ib-f).
Adjustment procedure (except serpentine):
• loosen the alternator pivot and adjusting bolts
pry on the alternator front housing only (1).
040164
• tighten the belt with a pry bar
• tighten the adjusting bolt with 27 N-m (20 ft-
lbs) torque
• tighten the pivot bolt with 38 N-m (28 ft-lbs)
torque
• re-test the tension
Alternator Adjustment: (With Air Conditioner) -
Sii-Cylinder Engine
Position Tension Gauge Tool J-23600-B on a
section of the belt left of the alternator and below
the A/C compressor.
S E E
I.S.
n
o
T
E
S
B-191