Pacifica, 2003-2005

Accessory Drive Belts

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Adjustment



The tension of the drive belts on these vehicles is maintained by automatic tensioners. No adjustments are necessary.

Belt Tension Inspection



Belt replacement under any or all of the following conditions is required:



Excessive wear
 
Frayed cords
 
Severe glazing
 

Poly-V Belt system may develop minor cracks across the ribbed side (due to reverse bending). These minor cracks are considered normal and acceptable. Parallel cracks are not acceptable and require belt replacement.


NOTE
Do not use any type of belt dressing or restorer on Poly-V Belts.



Click image to see an enlarged view

Fig. View of belt with normal cracks - belt OK (1) and abnormal cracks - belt requires replacement (2)

View of belt with normal cracks - belt OK (1) and abnormal cracks - belt requires replacement (2)

Drive Belt Routings





Click image to see an enlarged view

Fig. Accessory drive belt routing: Alternator (1), Automatic Tensioner (2), P/S Pump (3), Idler Pulley (4), A/C Compressor (5), Crankshaft Pulley (6)-3.5L engine

Accessory drive belt routing: Alternator (1), Automatic Tensioner (2), P/S Pump (3), Idler Pulley (4), A/C Compressor (5), Crankshaft Pulley (6)-3.5L engine

Click image to see an enlarged view

Fig. Accessory V-belt routing: Alternator pulley (1), A/C Compressor pulley (2), Crankshaft pulley (3), Tensioner pulley (4), Water Pump pulley (5), P/S Pump pulley (6), Idler pulley (7)-3.8L engines

Accessory V-belt routing: Alternator pulley (1), A/C Compressor pulley (2), Crankshaft pulley (3), Tensioner pulley (4), Water Pump pulley (5), P/S Pump pulley (6), Idler pulley (7)-3.8L engines

Removal & Installation



3.5L Engine
  1. Raise and safely support the vehicle.
  2.  
  3. Remove the drive belt shield.
    CAUTION
    Never allow drive belt tensioner to snap back, as damage to tensioner and/or personal injury could result.



    Click image to see an enlarged view

    Fig. Remove the attaching screws (1 & 2) and remove the splash shield (3)-3.5L engine

    Remove the attaching screws (1 & 2) and remove the splash shield (3)-3.5L engine
  4.  
  5. Position a wrench on the belt tensioner lug.
  6.  
  7. Release belt tension by rotating the tensioner counterclockwise.

    Click image to see an enlarged view

    Fig. Position a wrench (2) on the belt tensioner lug (1), then release belt tension by rotating the tensioner counterclockwise

    Position a wrench (2) on the belt tensioner lug (1), then release belt tension by rotating the tensioner counterclockwise
  8.  
  9. Remove the drive belt.
  10.  
  11. Carefully return tensioner to its relaxed position.
  12.  

To install:

  1. Route and position the drive belt onto all pulleys, except for the crankshaft.
  2.  
  3. Rotate belt tensioner counterclockwise until belt can be installed onto the crankshaft pulley. Slowly release belt tensioner.
  4.  
  5. Verify belt is properly routed and engaged on all pulleys.

    Click image to see an enlarged view

    Fig. Accessory drive belt routing: Alternator (1), Automatic Tensioner (2), P/S Pump (3), Idler Pulley (4), A/C Compressor (5), Crankshaft Pulley (6)-3.5L engine

    Accessory drive belt routing: Alternator (1), Automatic Tensioner (2), P/S Pump (3), Idler Pulley (4), A/C Compressor (5), Crankshaft Pulley (6)-3.5L engine
  6.  
  7. Install drive belt shield and lower vehicle.
  8.  

3.8L Engine
  1. Raise and safely support the vehicle.
  2.  
  3. Remove the drive belt shield.
    CAUTION
    Never allow drive belt tensioner to snap back, as damage to tensioner and/or personal injury could result.



    Click image to see an enlarged view

    Fig. Remove the retaining screws (1 & 2), then remove the drive belt shield (3)-3.8L engine

    Remove the retaining screws (1 & 2), then remove the drive belt shield (3)-3.8L engine
  4.  
  5. Position a wrench on the belt tensioner lug.
  6.  
  7. Release belt tension by rotating the tensioner counterclockwise.

    Click image to see an enlarged view

    Fig. Position a wrench (2) on the belt tensioner lug (1), then release belt tension by rotating the tensioner counterclockwise

    Position a wrench (2) on the belt tensioner lug (1), then release belt tension by rotating the tensioner counterclockwise
  8.  
  9. Remove the drive belt.
  10.  
  11. Carefully return tensioner to its relaxed position.
  12.  

To install:

  1. Route and position the drive belt onto all pulleys, except for the crankshaft.
  2.  
  3. Rotate belt tensioner counterclockwise until belt can be installed onto the crankshaft pulley. Slowly release belt tensioner.
  4.  
  5. Verify belt is properly routed and engaged on all pulleys.

    Click image to see an enlarged view

    Fig. Accessory V-belt routing: Alternator pulley (1), A/C Compressor pulley (2), Crankshaft pulley (3), Tensioner pulley (4), Water Pump pulley (5), P/S Pump pulley (6), Idler pulley (7)-3.8L engines

    Accessory V-belt routing: Alternator pulley (1), A/C Compressor pulley (2), Crankshaft pulley (3), Tensioner pulley (4), Water Pump pulley (5), P/S Pump pulley (6), Idler pulley (7)-3.8L engines
  6.  
  7. Install drive belt shield and lower vehicle.
  8.  

 
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