Dodge Dakota (R1). Manual — part 253
INSTALLATION
(1) Check condition of all pulleys.
CAUTION: When installing the serpentine accessory
drive belt, the belt MUST be routed correctly. If not,
the engine may overheat due to the water pump
rotating in the wrong direction. Refer to (Fig. 10) or
(Fig. 11) for correct belt routing.
(2) Install new belt. Install belt tension gauge
C-4162 and tighten adjustment bolt (Fig. 7) until belt
tension is within specification range (Refer to 7 -
COOLING/ACCESSORY
DRIVE/DRIVE
BELTS
-
ADJUSTMENTS).
(3) Tighten idler pulley bolt and re-check belt ten-
sion. Adjust if necessary.
ADJUSTMENT—ACCESSORY DRIVE BELT
Correct drive belt tension is required to ensure
optimum performance of the belt driven engine acces-
sories. There are different types of adjustment
gauges for checking either a serpentine or a V-type
belt. Refer to the instructions supplied with the
gauge. Use the correct gauge when checking belt ten-
sion. Place gauge in the middle of the section of belt
being tested (between two pulleys) to check tension.
Do not allow the gauge (or gauge adapter) to contact
anything but the belt.
With the engine off (not running), visually inspect
accessory drive belt for glazing, cracks or chunks
missing. Also inspect pulleys for misalignment or
defects.
(Refer
to
7
-
COOLING/ACCESSORY
DRIVE/DRIVE BELTS - DIAGNOSIS AND TEST-
ING) correct belt diagnostic procedures.
Fig. 10 2.5L - With A/C
1 - GENERATOR PULLEY
2 - AIR CONDITIONER COMPRESSOR PULLEY
3 - IDLER PULLEY
4 - POWER STEERING PUMP PULLEY
5 - WATER PUMP AND FAN PULLEY
6 - IDLER PULLEY
7 - CRANKSHAFT PULLEY
Fig. 11 2.5L Engines - Without A/C
1 - GENERATOR PULLEY
2 - IDLER PULLEY
3 - WATER PUMP AND FAN PULLEY
4 - POWER STEERING PUMP PULLEY
5 - IDLER PULLEY
6 - CRANKSHAFT PULLEY
7 - 24
ACCESSORY DRIVE
AN
DRIVE BELTS - 2.5L (Continued)
ACCESSORY DRIVE BELT TENSION CHART
BELT
TENSION
**NEW SERPENTINE
BELT
800-900 N (180-200 lbs.)
USED SERPENTINE
BELT
623-712 N (140-160 lbs.)
**Belt is considered new if it has been used 15
minutes or less.
Specifications for use with a belt tension gauge. Refer
to operating instructions supplied with gauge.
(1) Disconnect battery negative cable.
(2) Install belt tension gauge C-4162 and compare
reading with those in the Accessory Drive Belt Ten-
sion Chart.
If tension is within specifications and no adjust-
ment is needed, remove belt tension gauge C-4162
and connect battery negative cable.
If belt tension is out of specification and adjustment
is necessary, continue with the following procedure.
(3) Loosen idler pulley bolt (Fig. 12).
(4) Adjust tension adjusting bolt (Fig. 12) until
reading is within specification.
(5) Tighten idler pulley bolt and re-check belt ten-
sion. Adjust if necessary.
DRIVE BELTS - 3.9L/5.9L
DIAGNOSIS AND TESTING—ACCESSORY
DRIVE BELT
VISUAL DIAGNOSIS
When diagnosing serpentine accessory drive belts,
small cracks that run across the ribbed surface of the
belt from rib to rib (Fig. 13), are considered normal.
These are not a reason to replace the belt. However,
cracks running along a rib (not across) are not nor-
mal. Any belt with cracks running along a rib must
be replaced (Fig. 13). Also replace the belt if it has
excessive wear, frayed cords or severe glazing.
Refer to ACCESSORY DRIVE BELT DIAGNOSIS
CHART for further belt diagnosis.
NOISE DIAGNOSIS
Noises generated by the accessory drive belt are
most noticeable at idle. Before replacing a belt to
resolve a noise condition, inspect all of the accessory
drive pulleys for alignment, glazing, or excessive end
play.
Fig. 12 Power Steering Pump Bracket and Idler
Pulley
1 - ADJUSTING BOLT
2 - IDLER PULLEY BOLT
Fig. 13 Belt Wear Patterns
1 - NORMAL CRACKS BELT OK
2 - NOT NORMAL CRACKS REPLACE BELT
AN
ACCESSORY DRIVE
7 - 25
DRIVE BELTS - 2.5L (Continued)
ACCESSORY DRIVE BELT DIAGNOSIS CHART
CONDITION
POSSIBLE CAUSES
CORRECTION
RIB CHUNKING (One or more ribs
has separated from belt body)
1. Foreign objects imbedded in
pulley grooves.
1. Remove foreign objects from
pulley grooves. Replace belt.
2. Installation damage
2. Replace belt
RIB OR BELT WEAR
1. Pulley misaligned
1. Align pulley(s)
2. Abrasive environment
2. Clean pulley(s). Replace belt if
necessary
3. Rusted pulley(s)
3. Clean rust from pulley(s)
4. Sharp or jagged pulley groove
tips
4. Replace pulley. Inspect belt.
5. Belt rubber deteriorated
5. Replace belt
BELT SLIPS
1. Belt slipping because of
insufficient tension
1. Inspect/Replace tensioner if
necessary
2. Belt or pulley exposed to
substance that has reduced friction
(belt dressing, oil, ethylene glycol)
2. Replace belt and clean pulleys
3. Driven component bearing failure
(seizure)
3. Replace faulty component or
bearing
4. Belt glazed or hardened from
heat and excessive slippage
4. Replace belt.
LONGITUDAL BELT CRACKING
1. Belt has mistracked from pulley
groove
1. Replace belt
2. Pulley groove tip has worn away
rubber to tensile member
2. Replace belt
9
GROOVE JUMPING
9
(Belt does not maintain correct
position on pulley)
1. Incorrect belt tension
1. Inspect/Replace tensioner if
necessary
2. Pulley(s) not within design
tolerance
2. Replace pulley(s)
3. Foreign object(s) in grooves
3. Remove foreign objects from
grooves
4. Pulley misalignment
4. Align component
5. Belt cordline is broken
5. Replace belt
BELT BROKEN
(Note: Identify and correct problem
before new belt is installed)
1. Incorrect belt tension
1. Replace Inspect/Replace
tensioner if necessary
2. Tensile member damaged during
belt installation
2. Replace belt
3. Severe misalignment
3. Align pulley(s)
4. Bracket, pulley, or bearing failure
4. Replace defective component
and belt
7 - 26
ACCESSORY DRIVE
AN
DRIVE BELTS - 3.9L/5.9L (Continued)
CONDITION
POSSIBLE CAUSES
CORRECTION
NOISE
(Objectionable squeal, squeak, or
rumble is heard or felt while drive
belt is in operation)
1. Incorrect belt tension
1. Inspect/Replace tensioner if
necessary
2. Bearing noise
2. Locate and repair
3. Belt misalignment
3. Align belt/pulley(s)
4. Belt to pulley mismatch
4. Install correct belt
5. Driven component induced
vibration
5. Locate defective driven
component and repair
TENSION SHEETING FABRIC
FAILURE
(Woven fabric on outside,
circumference of belt has cracked or
separated from body of belt)
1. Tension sheeting contacting
stationary object
1. Correct rubbing condition
2. Excessive heat causing woven
fabric to age
2. Replace belt
3. Tension sheeting splice has
fractured
3. Replace belt
CORD EDGE FAILURE
(Tensile member exposed at edges
of belt or separated from belt body)
1. Incorrect belt tension
1. Inspect/Replace tensioner if
necessary
2. Belt contacting stationary object
2. Replace belt
3. Pulley(s) out of tolerance
3. Replace pulley
4. Insufficient adhesion between
tensile member and rubber matrix
4. Replace belt
REMOVAL
NOTE: The belt routing schematics are published
from the latest information available at the time of
publication. If anything differs between these sche-
matics and the Belt Routing Label, use the sche-
matics on Belt Routing Label.This label is located in
the engine compartment.
CAUTION: Do not attempt to check belt tension with
a belt tension gauge on vehicles equipped with an
automatic belt tensioner. Refer to Automatic Belt
Tensioner in this group.
Drive belts on these engines are equipped with a
spring loaded automatic belt tensioner (Fig. 14). This
belt tensioner will be used on all belt configurations,
such as with or without power steering or air condi-
tioning. For more information, (Refer to 7 - COOL-
ING/ACCESSORY
DRIVE/BELT
TENSIONERS
-
DESCRIPTION).
(1) Attach a socket/wrench to pulley mounting bolt
of automatic tensioner (Fig. 14).
(2) Rotate tensioner assembly clockwise (as viewed
from front) until tension has been relieved from belt.
(3) Remove belt from idler pulley first.
(4) Remove belt from vehicle.
Fig. 14 Belt Tensioner—5.2L/5.9L Gas Engines
1 - IDLER PULLEY
2 - TENSIONER
3 - FAN BLADE
AN
ACCESSORY DRIVE
7 - 27
DRIVE BELTS - 3.9L/5.9L (Continued)
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