GM Corvette 1984-1996 Repair Guide

Belts

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INSPECTION



See Figures 1, 2, 3, 4, 5 and 6

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



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Fig. Fig. 6: There is usually an accessory drive belt routing label located in the engine compartment

REMOVAL & INSTALLATION



1984-89 Vehicles

See Figures 7, 8, 9, 10 and 11

  1. To remove or install the belt, lift or rotate the tensioner using a 1 / 2 inch breaker bar. The proper belt routing is shown in the accompanying figures.
  2.  



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Fig. Fig. 7: To remove the belt, insert a 1/2 in. breaker bar in the square opening in the tensioner



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Fig. Fig. 8: Rotate the breaker bar in the tensioner toward the drivers side of the vehicle



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Fig. Fig. 9: Once the tension is relieved, you can remove the unroute the drive belt from the pulleys

  1. To check belt tension, install a suitable belt tension gauge, BT-7825, J-23600 or equivalent between the alternator and A.I.R. pump. The measured tension should be between 120-140 lbs. (534-623 Nm).
  2.  



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Fig. Fig. 10: Drive belt routing-1984 vehicles



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Fig. Fig. 11: Serpentine drive belt routing-1986-89 vehicles

1990-96 Vehicles
1989-91 5.7L (VIn 8 engine)

See Figure 12

  1. Disconnect the negative battery cable.
  2.  
  3. Remove the air intake duct.
  4.  
  5. Rotate the belt tensioner using a 1 / 2 in. breaker bar.
  6.  
  7. Remove the belt from the vehicle.
  8.  



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Fig. Fig. 12: View of the serpentine drive belt routing and tensioner-1989-91 VIN 8 engine

To install:
  1. Install the belts on the pulleys.
  2.  
  3. Rotate the tensioner, using a 1 / 2 in. breaker bar.
  4.  
  5. Install the air intake duct.
  6.  
  7. Connect the negative battery cable.
  8.  

5.7L (VIN J) engine

See Figure 13

  1. Disconnect the negative battery cable.
  2.  
  3. Detach the air intake duct from the throttle body extension.
  4.  
  5. Retract the belt tensioner using a 1 / 2 in. drive ratchet.
  6.  
  7. Slip the belt rearward off the water pump pulley.
  8.  
  9. Remove the belt from the vehicle.
  10.  



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Fig. Fig. 13: Drive belt routing-1990-95 5.7L (VIN J) engine

To install:
  1. Slip the drive belt on the A/C compressor pulley.
  2.  
  3. Retract the tensioner using a 1 / 2 in. drive ratchet.
  4.  
  5. Route the belt over the alternator, crankshaft, power steering pulleys, and behind the water pump pulley.
  6.  
  7. Check to see if the belt is in all grooves. Pull the belt forward to the water pump pulley.
  8.  
  9. Release the drive belt tensioner.
  10.  
  11. Install the air cleaner intake duct assembly.
  12.  
  13. Connect the negative battery cable.
  14.  

5.7L (VIN P AND 5) engines

See Figures 14 and 15

  1. Examine the belt length scale on the drive belt tensioner for proper installed length. If the length is not correct, install a new drive belt.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Lift the drive belt tensioner pulley upward (clockwise) using a socket and a handle on the tensioner pulley bolt.
  6.  
  7. Remove the drive belt.
  8.  
  9. Clean the drive belt surfaces.
  10.  



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Fig. Fig. 14: Serpentine drive belt routing-1992-95 5.7L (VIN P) engines



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Fig. Fig. 15: Drive belt routing and tensioner rotation direction-1996 5.7L (VIN P & 5) engines

To install:
  1. Lift the drive belt tensioner pulley upward.
  2.  
  3. Install the drive belt under the tensioner pulley. Use a socket and a handle on the tensioner pulley bolt. Make sure you align the drive belt into the proper grooves on the drive belt pulleys.
  4.  
  5. Connect the negative battery cable.
  6.  

 
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