Jeep Wagoneer/Commando/Cherokee 1984-1998

V-Belts

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INSPECTION



See Figures 1, 2, 3, 4 and 5

Inspect the belts 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. It is best to replace all drive belts at one time, as a preventive maintenance measure, during this service operation.



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Fig. Fig. 1: There are typically 3 types of accessory drive belts found on vehicles today



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Fig. Fig. 2: An example of a healthy drive belt



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Fig. Fig. 3: Deep cracks in this belt will cause flex, building up heat that will eventually lead to belt failure



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Fig. Fig. 4: The cover of this belt is worn, exposing the critical reinforcing cords to excessive wear



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Fig. Fig. 5: Installing too wide a belt can result in serious belt wear and/or breakage

ADJUSTMENTS




CAUTION
On models equipped with an electric cooling fan, disconnect the negative battery cable or fan motor wiring harness connector before replacing or adjusting drive belts. Otherwise, the fan may come on, under certain circumstances, even though the ignition is off.

Alternator Belt

See Figures 6 and 7

  1. Position the ruler perpendicular to the drive belt at its longest straight run. Test the tightness of the belt by pressing it firmly with your thumb. The deflection should not exceed 1 / 4 inch (6mm).
  2.  
  3. If the deflection exceeds 1 / 4 inch (6mm), loosen the alternator mounting and adjusting arm bolts.
  4.  
  5. Place a 1 inch open-end or adjustable wrench on the adjusting ridge cast on the body, and pull on the wrench until the proper tension is achieved.
  6.  
  7. Holding the alternator in place to maintain tension, tighter the adjusting arm bolt. Recheck the belt tension. When the belt is properly tensioned, tighten the alternator mounting bolt.
  8.  



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Fig. Fig. 6: Measuring belt deflection



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Fig. Fig. 7: Some pulleys have a rectangular slot to aid in moving the accessories to be tightened

Power Steering Belt

See Figure 8

  1. Hold a ruler perpendicular to the drive belt at its longest run. Test the tightness of the belt by pressing it firmly with you thumb. The deflection should not exceed 1 / 4 inch (6mm).
  2.  
  3. To adjust the belt tension, loosen the adjusting and mounting bolts on the front face of the steering pump cover plate (hub side).
  4.  
  5. Using a prybar or broom handle on the pump hub, move the power steering pump toward or away from the engine until the proper tension is reached. Do not pry against the reservoir as it is relatively soft and easily deformed.
  6.  
  7. Holding the pump in place, tighten the adjusting arm bolt and then recheck the belt tension. When the belt is properly tensioned, tighten the mounting bolts.
  8.  



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Fig. Fig. 8: Power steering pump adjustment points on the 2.5L engine

Air Conditioning Belt
  1. Position a ruler perpendicular to the drive belt at its longest run. Test the tightness of the belt by pressing it firmly with your thumb. The deflection should not exceed 1 / 4 inch (6mm).
  2.  
  3. If the engine is equipped with an idler pulley, loosen the idler pulley adjusting bolt, insert a prybar between the pulley and the engine (or in the idler pulley adjusting slot), and adjust the tension accordingly. If the engine is not equipped with an idler pulley, the alternator must be moved to accomplish this adjustment, as outlined under Alternator Belt.
  4.  
  5. When the proper tension is reached, tighten the idler pulley adjusting bolt (if so equipped) or the alternator adjusting and mounting bolts.
  6.  

Air Pump Belt
  1. Position a ruler perpendicular to the drive belt at its longest run. Test the tightness of the belt by pressing it firmly with your thumb. The deflection should be about 1 / 4 inch (6mm).
  2.  
  3. To adjust the belt tension, loosen the adjusting arm bolt slightly. If necessary, also loosen the mounting bolt slightly.
  4.  
  5. Using a prybar or broom handle, pry against the pump rear cover to move the pump toward or away from the engine as necessary.
  6.  


WARNING
Do not pry against the pump housing itself, as damage to the housing may result.

  1. Holding the pump in place, tighten the adjusting arm bolt and recheck the tension. When the belt is properly tensioned tighten the mounting bolt.
  2.  

Removal & Installation



Alternator Belt
  1. Loosen the alternator mounting and adjusting arm bolts.
  2.  
  3. Pivot the alternator inward and remove the belt from the vehicle.
  4.  

To install:
  1. Install a new belt.
  2.  
  3. Holding the alternator in place to maintain tension, tighten the alternator mounting and adjusting arm bolts.
  4.  

Power Steering Belt
  1. Loosen the adjusting and mounting bolts on the front face of the steering pump cover plate (hub side).
  2.  
  3. Pivot the power steering pump inward and remove the drive belt.
  4.  

To install:
  1. Install the drive belt.
  2.  
  3. Holding the pump in place, tighten the adjusting arm bolt and the mounting bolts.
  4.  

Air Conditioning Compressor Belt
  1. If the engine is equipped with an idler pulley, loosen the idler pulley adjusting bolt and remove the belt.
  2.  
  3. If not equipped with an idler pulley, loosen the adjusting and mounting bolts.
  4.  
  5. Pivot the air conditioning compressor inward and remove the drive belt.
  6.  
  7. Installation is the reverse of removal.
  8.  

Air Pump Drive Belt
  1. Loosen the adjusting arm bolt slightly. If necessary, also loosen the mounting bolt slightly and remove the drive belt.
  2.  

To install:
  1. Holding the pump in place, install the drive belt, then tighten the adjusting arm bolt and the mounting bolt.
  2.  

 
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