Mitsubishi Galant/Mirage/Diamante 1990-2000

Belts

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INSPECTION



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



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Fig. An example of a healthy drive belt



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



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



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

ADJUSTMENT



Excessive belt tension will cause damage to the alternator and water pump pulley bearings, while, on the other hand, loose belt tension will produce slip and premature wear on the belt. Therefore, be sure to adjust the belt tension to the proper level.

To adjust the tension on a drive belt, loosen the adjusting bolt or fixing bolt locknut on the alternator, alternator bracket or tension pulley. Then move the alternator or turn the adjusting bolt to adjust belt tension. Once the desired value is reached, secure the bolt or locknut and recheck tension.

REMOVAL & INSTALLATION



1.5L, 1.6L, 1.8L, 2.0L and 2.4L Engines


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Fig. Accessory V-belt routing-Mitsubishi 1.5L, 1.6L, 1.8L, 2.0L and 2.4L engines

Alternator Belt


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Fig. Loosen the adjuster lock bolt . . .



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Fig. . . . then remove the alternator belt from the engine

  1. Loosen the alternator support nut.
  2.  
  3. Loosen the adjuster lock bolt.
  4.  
  5. Rotate the adjuster bolt counter clockwise to release the tension on the belt.
  6.  
  7. Remove the belt.
  8.  

To install:

  1. Install the belt on the pulleys.
  2.  
  3. Rotate the adjuster bolt clockwise until the proper tension is reached.
  4.  
  5. Tighten the adjuster lock bolt and the alternator support nut.
  6.  

POWER STEERING BELT


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Fig. After the adjusting and fixed bolts are loosened, rotate the pump . . .



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Fig. . . . then remove the power steering belt from the engine

  1. Remove the alternator belt as described above.
  2.  
  3. Loosen the power steering pump adjusting bolts.
  4.  
  5. Remove the power steering pump fixed bolt on the rear of the bracket.
  6.  
  7. Rotate the pump toward the engine and remove the belt.
  8.  

To install:

  1. Install the belt on the pulleys.
  2.  
  3. Rotate the pump until the proper tension is reached.
  4.  
  5. Tighten the adjusting bolts on the pump.
  6.  
  7. Tighten the fixed bolt on the rear of the bracket.
  8.  
  9. Install the alternator belt.
  10.  

A/C COMPRESSOR BELT
  1. Loosen the tension pulley and remove the belt.
  2.  
  3. The installation is the reverse of the removal.
  4.  

3.0L DOHC, 3.0L SOHC Galant, and 3.5L Engines


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Fig. Serpentine belt routing-Mitsubishi 3.0L engines (except 1998-00 Galant models)



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Fig. Accessory V-belt routing-Mitsubishi 3.5L and 1998-00 3.0L SOHC Galant engines

ALTERNATOR AND A/C COMPRESSOR
  1. Disconnect the negative battery cable.
  2.  


CAUTION
Wait at least 90 seconds after the negative battery cable is disconnected to prevent possible deployment of the air bag.

  1. Raise and safely support the vehicle and remove the front undercover.
  2.  
  3. Loosen the tension pulley fixing nut and relieve the tension on the belt by turning the adjusting bolt.
  4.  
  5. Remove the belt.
  6.  

To install:

  1. Install the belt on the crankshaft and alternator pulleys.
  2.  
  3. Using the adjusting bolt on the tensioner, tighten the belt to the desired tension.
  4.  
  5. Tighten the fixing nut to hold the adjustment.
  6.  
  7. Install the undercover and lower the vehicle to the floor.
  8.  
  9. Connect the negative battery cable.
  10.  

POWER STEERING BELT
  1. Disconnect the negative battery cable.
  2.  


CAUTION
Wait at least 90 seconds after the negative battery cable is disconnected to prevent possible deployment of the air bag.

  1. Raise and safely support the vehicle and remove the undercover.
  2.  
  3. Remove the alternator and A/C compressor belt.
  4.  
  5. Lower the vehicle and remove the cruise control pump link assembly.
  6.  
  7. Place the power steering hose under the oil reservoir.
  8.  
  9. Loosen the tension pulley fixing bolts and remove the power steering pump drive belt.
  10.  

To install:

  1. Install the power steering pump drive belt.
  2.  
  3. Insert an extension bar or equivalent into the opening at the end of the tension pulley bracket and pivot the pulley to apply tension to the belt.
  4.  
  5. Tighten the fixing bolts.
  6.  
  7. Raise the vehicle and install the alternator and A/C compressor belt.
  8.  
  9. Install the undercover and lower the vehicle.
  10.  
  11. Connect the negative battery cable.
  12.  

3.0L SOHC Diamante
  1. Disconnect the negative battery cable.
  2.  
  3. Loosen the lockbolt on the face of the A/C tensioner pulley.
  4.  
  5. Turn the adjusting bolt of the A/C tensioner pulley to loosen the tension of the A/C belt.
  6.  
  7. Remove the A/C compressor belt.
  8.  
  9. Loosen the locknut on the face of the power steering/alternator tensioner pulley.
  10.  
  11. Turn the adjusting bolt of the tensioner pulley to loosen the tension of the belt.
  12.  
  13. Remove the power steering/alternator belt.
  14.  

To install:

  1. Install the power steering/alternator belt first and then the A/C compressor drive belt.
  2.  
  3. Adjust the belts to the proper tension by turning the adjusting bolts and tighten pulley fixing nut/bolt.
  4.  
  5. Tighten the mounting nut of the power steering/alternator tensioner pulley to 36 ft. lbs. (50 Nm).
  6.  


NOTE
The manufacturer does not provide a torque specification for the bolt that secures A/C tensioner pulley.

  1. Connect the negative battery cable.
  2.  

 
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