Dodge 2000 DURANGO Service Manual page 242

7 - 40 COOLING SYSTEM
REMOVAL AND INSTALLATION (Continued)
Fig. 61 Automatic Belt Tensioner Removal/
Installation 5.2L/5.9L Engines
1 – AUTOMATIC TENSIONER
2 – COIL AND BRACKET
3 – SCREW AND WASHER
(3) Connect all wiring to ignition coil.
(4) Position coil to tensioner assembly, install two
mounting screws. Tighten to 11 N·m (100 in. lbs.)
(Fig. 61).
CAUTION: To prevent damage to coil case, coil
mounting bolts must be torqued.
(5) Install accessory drive belt.
AUTOMATIC BELT TENSIONER—4.7L ENGINE
On 4.7L engines, the tensioner is equipped
with an indexing tang on back of tensioner and
an indexing stop on tensioner housing. If a new
belt is being installed, tang must be within
approximately 24 mm (.94 inches) of indexing
stop. Belt is considered new if it has been used
15 minutes or less.
If the above specification cannot be met, check for:
• The wrong belt being installed (incorrect length/
width)
• Worn bearings on an engine accessory (A/C com-
pressor, power steering pump, water pump, idler pul-
ley or generator)
• A pulley on an engine accessory being loose
• Misalignment of an engine accessory
• Belt incorrectly routed.
NOTE: A used belt should be replaced if tensioner
indexing arrow has moved to the minmum tension
indicator. Tensioner travel stops at this point.
REMOVAL
(1) Remove accessory drive belt. Refer to Accessory
Drive Belt in this section.
(2) Remove tensioner assembly from mounting
bracket (Fig. 62).
Fig. 62 Automatic Belt Tensioner—4.7L Engine
1 – TIMING CHAIN COVER
2 – BOLT TORQUE TO 41 N·m (30 FT LBS)
3 – AUTOMATIC BELT TENSIONER
WARNING: BECAUSE OF HIGH SPRING PRES-
SURE, DO NOT ATTEMPT TO DISASSEMBLE AUTO-
MATIC TENSIONER. UNIT IS SERVICED AS AN
ASSEMBLY EXCEPT FOR PULLEY ON TENSIONER.
(3) Remove pulley bolt. Remove pulley from ten-
sioner.
INSTALLATION
(1) Install pulley and pulley bolt to tensioner.
Tighten bolt to 61 N·m (45 ft. lbs.) torque.
(2) An indexing slot is located on back of tensioner.
Align this slot to the head of the bolt on the front
cover. Install the mounting bolt. Tighten bolt to 41
N·m (30 ft. lbs.).
(3) Install accessory drive belt.
(4) Check belt indexing marks.
RADIATOR DRAINCOCK
REMOVAL
WARNING: DO NOT LOOSEN RADIATOR DRAIN-
COCK WITH SYSTEM HOT AND PRESSURIZED.
SERIOUS BURNS FROM COOLANT CAN OCCUR.
(1) Unscrew draincock
rotation). When stem is completely unscrewed, pull it
from radiator tank and draincock body (Fig. 63).
DN
stem (counterclockwise