Chrysler Full-Size Trucks 1989-1996 Repair Guide

Automatic Transmission

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FLUID RECOMMENDATIONS



All Automatic transmissions covered by this information, use ATF+3®IIl ATF.

LEVEL CHECK



See Figures 1, 2, 3 and 4

It is very important to maintain the proper fluid level in an automatic transmission. If the level is either too high or too low, poor shifting operation and internal damage are likely to occur. For this reason a regular check of the fluid level is essential.



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Fig. Fig. 1: With the engine running, remove the automatic transmission fluid dipstick to check the level

  1. Drive the vehicle for 15-20 minutes to allow the transmission to reach operating temperature.
  2.  
  3. Park the truck on a level surface, apply the parking brake and leave the engine idling. Shift the transmission and engage each gear, then place the gear selector in P (PARK).
  4.  



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Fig. Fig. 2: Check the ATF level against the markings on the dipstick



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Fig. Fig. 3: Automatic transmission dipstick markings

  1. Wipe away any dirt in the area of the transmission dipstick to prevent it from falling into the filler tube. Withdraw the dipstick, wipe it with a clean, lint-free rag and reinsert it until it seats.
  2.  



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Fig. Fig. 4: Use a long-mouth funnel to add fluid to the automatic transmission dipstick tube. Do not overfill

  1. Withdraw the dipstick and note the fluid level. It should be between the upper (FULL) mark and the lower (ADD) mark.
  2.  
  3. If the level is below the lower mark, use a funnel and add fluid in small quantities through the dipstick filler neck. Keep the engine running while adding fluid and check the level after each small amount. Do not overfill.
  4.  

DRAIN AND REFILL



See Figures 5, 6, 7, 8 and 9

  1. Raise the front of the truck and support it on jackstands. Place a large drain pan under the transmission.
  2.  



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Fig. Fig. 5: Loosen but don't remove the A/T pan attaching bolts



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Fig. Fig. 6: The automatic transmission fluid filter location

  1. Loosen the pan attaching bolts and tap the pan at one corner to break it loose.
  2.  
  3. Allow the fluid to drain into the drain pan.
  4.  
  5. Loosen the pan attaching bolts, then tap the pan at one corner to break it loose.
  6.  
  7. Allow the fluid to drain into the drain pan.
  8.  



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Fig. Fig. 7: Remove the transmission filter attaching screws

  1. After most of the fluid has drained, carefully remove the attaching bolts, lower the pan and drain the rest of the fluid.
  2.  
  3. Remove the filter attaching screws and remove the filter.
  4.  

To install:
  1. Install a new filter. Tighten the screws to 35 inch lbs. (4 Nm).
  2.  
  3. Thoroughly clean the fluid pan with safe solvent and allow it to dry.
  4.  



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Fig. Fig. 8: Clean the pan with a safe solvent and a clean lint-free cloth

  1. Using a new gasket, install the pan to the transmission. Tighten the attaching bolts to 150 inch lbs. (17 Nm).
  2.  



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Fig. Fig. 9: Always install a new gasket, and make sure the surfaces are clean and dry

  1. Pour 4 quarts of ATF+3®III automatic transmission fluid in through the dipstick tube.
  2.  
  3. Lower the vehicle, start the engine and allow it to run for a few minutes. With the parking brake set, slowly move the gear selector to each position. Return it to the Neutral position.
  4.  
  5. Check the fluid level. Add more fluid as necessary to bring it up to the "ADD ONE PINT'' level.
  6.  
  7. Drive the truck to bring the fluid up to normal operating temperature. Check the level again. It should be between the "Add'' and "Full'' marks.
  8.  

 
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