Dakota, 2001-2005

Accessory Drive Belts

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Adjustment



Correct drive belt tension is required to ensure optimum performance of the belt driven engine accessories. Use the correct gauge when checking belt tension; 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. 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.


NOTE
It is not necessary to adjust belt tension on the 3.7L. 3.9L or 5.9L engines. These engines are equipped with an automatic belt tensioner. The tensioner maintains correct belt tension at all times.

2.5L Engines

Belt tension is adjusted at the power steering pump bracket and idler pulley assembly.

  1. Disconnect negative battery cable from battery.
  2.  
  3. Loosen idler pulley bolt.
  4.  
  5. Loosen tension adjusting bolt.
  6.  
  7. Adjust tension adjusting bolt until reading is within specification.
  8.  
  9. Tighten idler pulley bolt and re-check belt tension. Adjust if necessary.

    Click image to see an enlarged view

    Fig. Tension adjusting bolt (1) Idler pulley bolt (2) Belt (3)

  10.  

Belt Tension Inspection



Inspect the drive belt for signs of glazing or cracking. A glazed belt will be perfectly smooth from slippage, while a good belt will have a slight texture of fabric visible. Cracks will usually start at the inner edge of the belt and run outward. All worn or damaged drive belts should be replaced immediately.

Drive Belt Routings




NOTE
The belt routing schematics are published from the latest information available at the time of publication. If anything differs between these schematics and the Belt Routing Label, use the schematics on Belt Routing Label. This label is located in the engine compartment, usually on the fan shroud.



Click image to see an enlarged view

Fig. Accessory drive belt routing-2.5L engines with A/C



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Fig. Accessory drive belt routing-2.5L engines without A/C



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Fig. Accessory drive belt routing-3.7L and 4.7L engines

Removal & Installation



2.5L Engine
  1. Disconnect negative battery cable from battery.
  2.  
  3. Loosen idler pulley bolt.
  4.  
  5. Loosen tension adjusting bolt and remove accessory drive belt.
  6.  

To install:


WARNING
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 ACCESSORY BELT ROUTING.

  1. Install new belt. Install belt tension gauge and tighten adjustment bolt until belt tension is within specification range.
  2.  
  3. Tighten idler pulley bolt and re-check belt tension. Adjust if necessary.
  4.  

3.7L, 3.9L, 4.7L And 5.9L Engines
  1. Attach a socket/wrench to pulley mounting bolt of automatic tensioner.
  2.  
  3. Rotate tensioner assembly clockwise (as viewed from front) until tension has been relieved from belt.
  4.  
  5. Remove belt from idler pulley first.
  6.  
  7. Remove belt from vehicle.
  8.  

To install:


WARNING
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.

  1. Install new belt. Route the belt around all pulleys except the idler pulley. Rotate the tensioner arm until it contacts its stop position. Route the belt around the idler and slowly let the tensioner rotate into the belt. Make sure the belt is seated onto all pulleys.
  2.  
  3. With the drive belt installed, inspect the belt wear indicator.
  4.  
  5. On 4.7L Engines only, the gap between the tang and the housing stop (measurement A) must not exceed 24 mm (0.94 inches). If the measurement exceeds this specification replace the serpentine accessory drive belt.

    Click image to see an enlarged view

    Fig. Automatic belt tensioner-Typical



    Click image to see an enlarged view

    Fig. Wear Indicator-Measurement -A- must not exceed 25mm (0.94 inches)

  6.  

 
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