Nissan Pick-ups and Pathfinder 1989-1995

Automatic Transmission

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FLUID RECOMMENDATIONS





All models: DEXRON®reg; ATF
 

If Dexron®reg; II or III is not available, use genuine Nissan ATF or equivalent.

FLUID LEVEL CHECK



See Figures 1, 2 and 3

Check the automatic transmission fluid level at least every 15,000 miles (24,000 km) or every 12 months. The dipstick is at the right rear of the engine compartment. The fluid level should be checked only when the transmission is hot (normal operating temperature). The transmission is considered hot after about 20 miles of highway driving.

  1. Park the truck on a level surface with the engine idling. Shift the transmission into P and set the parking brake.
  2.  
  3. Remove the dipstick, wipe it clean and reinsert if firmly. Be sure that it has been pushed all the way in. Remove the dipstick and check the fluid level while holding it horizontally. All models have a HOT and a COLD side to the dipstick. On 2wd models, the fluid level should be between the two hash marks on the HOT side, or between the two notches on the COLD side. On 4wd models, the fluid level should be within the cross-hatched area on the HOT or COLD sides.
  4.  
  5. If the fluid level is below the lower hash mark (HOT) or lower notch (COLD) on 2wd models, or not within the cross-hatched area on either side of the dipstick on 4wd models, pour DEXRON®reg; ATF into the dipstick tube. This is easily done with the aid of a funnel. Check the level often as you are filling the transmission. Be extremely careful not to overfill it. Overfilling will cause slippage, seal damage and overheating. Approximately one pint of ATF will raise the level from one notch to the other.
  6.  

Always use the proper transmission fluid when filling your truck's automatic transmission. All models use DEXRON type fluid. Always check with the owner's manual to be sure. NEVER use Type F in a transmission requiring DEXRON®reg; or vice versa, as severe damage will result.


WARNING
The fluid on the dipstick should always be a bright red color. If it is discolored (brown or black) or smells burnt, serious transmission troubles, probably due to overheating, should be suspected. The transmission should be inspected by a qualified service technician to locate the cause of the burnt fluid.



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Fig. Fig. 1: Automatic transmission dipstick-2WD models



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Fig. Fig. 2: Automatic transmission dipstick-4WD models



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Fig. Fig. 3: Automatic transmission dipstick-Some 1991 models with KA24E engine

DRAIN AND REFILL



The automatic transmission fluid should be changed at least every 25,000-30,000 miles (40,000-48,000 km) or every 24 months. If the truck is normally used in severe service, such as stop-and-go driving, trailer towing or the like, the interval should be halved. The fluid should be hot before it is drained; a 20 minute drive will accomplish this.

There is no drain plug, so the fluid pan must be removed.

Pan and Filter Service

See Figures 4 and 5

  1. Raise the front of the truck and support it on jackstands.
  2.  

It is a good idea to measure the amount of fluid drained from the transmission to determine the correct amount of fresh fluid to add. This is because some parts of the transmission may not drain completely, and using the dry refill amount specified in the Capacities Chart could lead to overfilling.

  1. Slide a drain pan under the transmission. Partially loosen the pan retaining screws and remove the rear oil pan bolts, then drop the rear of the pan slightly so as to allow most of the fluid to drain without making a mess on your garage floor.
  2.  


WARNING
Check the fluid in the drain pan, it should always be a bright red color. If it is discolored (brown or black) or smells burnt, serious transmission troubles, probably due to overheating, should be suspected. The transmission should be inspected by a qualified service technician to locate the cause of the burnt fluid.

  1. After the pan has drained, remove the pan retaining screws along with the pan and gasket.
  2.  



Click image to see an enlarged view

Fig. Fig. 4: Removing the fluid pan on an automatic transmission



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Fig. Fig. 5: Always replace the pan gasket when installing the fluid pan

  1. Clean the pan thoroughly and allow it to air dry. If you wipe it out with a rag, you run the risk of leaving bits of lint in the pan which will clog the tiny hydraulic passages in the transmission.
  2.  
  3. Replace the transmission filter or strainer at this time, if necessary.
  4.  

To install:
  1. If removed, install a new transmission filter or strainer.
  2.  
  3. Install the pan using a new gasket. If you decide to use sealer on the gasket, apply it only in a very thin bead running along the outside of the pan screw holes. Tighten the pan screws evenly in rotation from the center outwards, to 4-5 ft. lbs. (5-8 Nm). Lower the vehicle.
  4.  
  5. Remove the jackstands and carefully lower the truck.
  6.  
  7. Add the correct amount of the proper type automatic transmission fluid through the dipstick tube; DO NOT overfill.
  8.  
  9. Insert the dipstick after filling. Start the engine and allow it to idle. DO NOT race the engine.
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  11. After the engine has idled for a few minutes, shift the transmission slowly through the gears, then return it to P . With the engine still idling, check the fluid level on the dipstick. If necessary, add more fluid to raise the level to where it is supposed to be.
  12.  

 
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