BR
ENGINE ACCESSORY DRIVE BELTS
7 - 57
POWER STEERING PUMP
IS NOT BELT DRIVEN
AUTOMATIC
TENSIONER
J9307-58
Fig. 6 Belt Routing—5.9L Diesel Engine—Without
A/C
IDLER
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Fig. 7 Belt Tensioner—3.9L V-6 or 5.2/5.9L V-8
LDC-Gas
Engines
(1) Position drive belt over all pulleys except idler
pulley. This pulley is located between generator and
A/C compressor.
(2) Attach a socket/wrench to pulley mounting bolt
of automatic tensioner (Fig. 7).
(3) Rotate socket/wrench clockwise. Place belt over
idler pulley. Let tensioner rotate back into place. Re
move wrench. Be sure belt is properly seated on all
pulleys.
(4) Check belt indexing marks. Refer to the pro
ceeding Automatic Belt Tensioner for more belt infor
mation.
5,BL HDC-GAS AND 8.0L V-10
ENGINES
iEiOWAL
Drive belts are equipped with a spring loaded au
tomatic belt tensioner (Fig. 8). This belt tensioner
will be used on all belt configurations, such as with
or without power steering or air conditioning. For
more information, refer to Automatic Belt Tensioner,
proceeding in this group.
PULLEY
BOLT
IDLER
AlUik
PULLEY
T E N S I O N E R
M O U N T I N G
BOLT
T E N S I O N E R
J9307-64
Fig. 8 Belt Tensioner—5.9L HDC-Gas and 8.0L V-10
Engines—Typical
(1) Attach a socket/wrench to pulley mounting bolt
of automatic tensioner (Fig. 8). The threads on the
pulley mounting bolt are left- hand.
(2) Relax the tension from the belt by rotating the
tensioner counterclockwise (as viewed from front)
(Fig. 8). When all belt tension has been relaxed, re
move belt from tensioner pulley first and other pul
leys last.
I N S T A L L A T I O N
CAUTION: When installing serpentine accessory
drive belt, belt must be routed correctly. If not, en
gine may overheat due to water pump rotating in
wrong direction. Refer to (Figs. 3 or 4) for correct
engine belt routing. The correct belt with correct
length must be used.
CAUTION: If the pulley is to be removed from the
tensioner, its mounting bolt has left-hand threads.