Nissan Pick-ups and Pathfinder 1989-1995

Drive Belts

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INSPECTION



See Figure 1

Check the condition of the drive belts, and check the belt tension at least every 30,000 miles (48,000 km) or every 24 months.

  1. 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 generally start at the inner edge of the belt and run outward. Replace the belt at the first sign of cracking or if the glazing is severe.
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  3. By placing your thumb midway between the two pulleys, it should be possible to depress the belt 1 / 4 - 1 / 2 in. (6-13mm). If any of the belts can be depressed more than this, or cannot be depressed this much, adjust the tension. Inadequate tension will result in slippage or wear, while excessive tension will damage pulley bearings and cause belts to fray and crack.
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  5. It's not a bad idea to replace all drive belts at 60,000 miles (96,000 km) or 48 months, regardless of their condition.
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Fig. Fig. 1: Measuring belt deflection with a straightedge and ruler

ADJUSTMENT



See Figures 2, 3 and 4

Alternator Belt
Z24i ENGINE
  1. Loosen the pivot and mounting bolts on the alternator.
  2.  
  3. Using a wooden hammer handle or broomstick (or even your hand if you're strong enough), move the alternator one way or the other until the tension is within acceptable limits.
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Never use a screwdriver or any other metal device, such as a prybar, as a lever when adjusting the alternator belt tension!

  1. Tighten the mounting bolts securely. If a new belt has been installed, always recheck the tension after a few hundred miles of driving.
  2.  



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Fig. Fig. 2: Drive belt tension inspection and adjustment points-VG30i and VG30E engines



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Fig. Fig. 3: Drive belt tension inspection and adjustment points-Z24i and KA24E engines



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Fig. Fig. 4: Drive belt tension inspection and adjustment points-KA24E engine

VG30i, KA24E AND VG30E ENGINES

See Figures 5, 6 and 7

Alternator belt tension is adjusted on these engines by means of a tension adjusting bolt.

  1. Loosen the alternator pivot bolt, then turn the adjusting bolt until proper tension is achieved.
  2.  
  3. Tighten the mounting bolts securely. If a new belt has been installed, always recheck the tension after a few hundred miles of driving.
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Fig. Fig. 5: On some vehicles it is easier to access a component from underneath the truck



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Fig. Fig. 6: Loosen the alternator pivot bolt with a box wrench or a ratchet and socket



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Fig. Fig. 7: Use the adjusting bolt to vary tension on the belt

A/C Compressor Belt

See Figures 8 and 9

Tension on the air conditioning compressor belt is adjusted by means of an idler pulley.

  1. Loosen the locknut, then turn the adjusting bolt on the idler pulley until the desired tension is achieved.
  2.  
  3. Tighten the idler pulley locknut. If a new belt has been installed, always recheck the tension after a few hundred miles of driving.
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Fig. Fig. 8: Loosen the locknut on the idler pulley before adjusting the belt



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Fig. Fig. 9: Turn the adjusting bolt until the correct belt tension is achieved

Power Steering Pump
Z24i AND KA24E ENGINES

Tension on the power steering pump belt is adjusted by means of an idler pulley.

  1. Loosen the locknut, then turn the adjusting bolt on the idler pulley until the desired tension is achieved.
  2.  
  3. Tighten the idler pulley locknut. If a new belt has been installed, always recheck the tension after a few hundred miles of driving.
  4.  

VG30i AND VG30E ENGINES

Power steering pump belt tension is adjusted on these engines by means of a tension adjusting bolt.

  1. Loosen the power steering pump pivot bolt, then turn the tension adjusting bolt until proper tension is achieved.
  2.  
  3. Tighten the mounting bolts securely. If a new belt has been installed, always recheck the tension after a few hundred miles of driving.
  4.  

 
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