Isuzu I-280, I-350 2005-06

Accessory Drive Belts

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Drive Belt Routings





Click image to see an enlarged view

Fig. Accessory drive belt routing-2.8L and 3.5L engines without A/C



Click image to see an enlarged view

Fig. Accessory drive belt routing-2.8L and 3.5L engines with A/C

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.

Removal & Installation



2.8L
With A/C
  1. Install a 3/8 inch breaker bar into the drive belt tensioner (7) and rotate the tensioner (7) clockwise, enough to relieve the tension on the drive belt (1).
  2.  
  3. Slide the drive belt (1) from the water pump pulley (2).
  4.  
  5. Allow the drive belt tensioner (7) to return to the relaxed position.
  6.  
  7. Remove the drive belt (1) from the remaining pulleys.

    Click image to see an enlarged view

    Fig. Removing and installing accessory drive belt-2.8L with A/C

  8.  

To install:

  1. Route the drive belt (1) over all the pulleys, excluding the water pump pulley (2).
  2.  
  3. Install the 3/8 inch breaker bar on the drive belt tensioner (7) and rotate the tensioner (7) clockwise.
  4.  
  5. Route the drive belt (1) over the top of the water pump pulley (2).
  6.  
  7. Slowly release the tension to the drive belt tensioner (7).
    WARNING
    Ensure the drive belt is properly aligned and seated into the grooves of the drive pulleys.

  8.  
  9. Inspect for proper installation of the drive belt (1) on the pulleys.
  10.  

Without A/C
  1. Install a 3/8 inch breaker bar into the drive belt tensioner (5) and rotate the tensioner (5) clockwise, enough to relieve the tension on the drive belt (1).
  2.  
  3. Slide the drive belt (1) from the water pump pulley (3).
  4.  
  5. Allow the drive belt tensioner (5) to return to the relaxed position.
  6.  
  7. Remove the drive belt (1) from the remaining pulleys.

    Click image to see an enlarged view

    Fig. Removing and installing accessory drive belt-2.8L without A/C

  8.  

To install:

  1. Route the drive belt (1) over all the pulleys, excluding the water pump pulley (3).
  2.  
  3. Install the 3/8 inch breaker bar on the drive belt tensioner (5) and rotate the tensioner (5) clockwise.
  4.  
  5. Route the drive belt (1) over the top of the water pump pulley (3).
  6.  
  7. Slowly release the tension to the drive belt tensioner (5).
    WARNING
    Ensure the drive belt is properly aligned and seated into the grooves of the drive pulleys.

  8.  
  9. Inspect for proper installation of the drive belt (1) on the pulleys.
  10.  

3.5L Engine
With A/C
  1. Install a 3/8 inch breaker bar into the drive belt tensioner (7) and rotate the tensioner (7) clockwise, enough to relieve the tension on the drive belt (1).
  2.  
  3. Slide the drive belt (1) from the water pump pulley (2).
  4.  
  5. Allow the drive belt tensioner (7) to return to the relaxed position.
  6.  
  7. Remove the drive belt (1) from the remaining pulleys.

    Click image to see an enlarged view

    Fig. Removing and installing accessory drive belt-3.5L with A/C

  8.  

To install:

  1. Route the drive belt (1) over all the pulleys, excluding the water pump pulley (2).
  2.  
  3. Install the 3/8 inch breaker bar on the drive belt tensioner (7) and rotate the tensioner (7) clockwise.
  4.  
  5. Route the drive belt (1) over the top of the water pump pulley (2).
  6.  
  7. Slowly release the tension to the drive belt tensioner (7).
    NOTE
    Ensure the drive belt is properly aligned and seated into the grooves of the drive pulleys.

  8.  
  9. Inspect for proper installation of the drive belt (1) on the pulleys.   
  10.  

Without A/C
  1. Install a 3/8 inch breaker bar into the drive belt tensioner (5) and rotate the tensioner (5) clockwise, enough to relieve the tension on the drive belt (1).
  2.  
  3. Slide the drive belt (1) from the water pump pulley (3).
  4.  
  5. Allow the drive belt tensioner (5) to return to the relaxed position.
  6.  
  7. Remove the drive belt (1) from the remaining pulleys.

    Click image to see an enlarged view

    Fig. Removing and installing accessory drive belt-3.5L without A/C

  8.  

To install:

  1. Route the drive belt (1) over all the pulleys, excluding the water pump pulley (3).
  2.  
  3. Install the 3/8 inch breaker bar on the drive belt tensioner (5) and rotate the tensioner (5) clockwise.
  4.  
  5. Route the drive belt (1) over the top of the water pump pulley (3).
  6.  
  7. Slowly release the tension to the drive belt tensioner (5).
    NOTE
    Ensure the drive belt is properly aligned and seated into the grooves of the drive pulleys.

  8.  
  9. Inspect for proper installation of the drive belt (1) on the pulleys.
  10.  

 
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