Chrysler Full-Size Trucks 1967-1988 Repair Guide

Fluid Pan

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A running production change was made in January, 1977 which eliminated the converter drain plug. This means that the transmission must be removed in order to drain the converter on models manufactured after this date.

REMOVAL & INSTALLATION



With Converter Drain Plug

See Figures 1 through 5

  1. Jack up the front of the vehicle and support it on jackstands.
  2.  
  3. Remove the converter access plate and turn the converter using the starter, until the converter drain plug is accessible.
  4.  
  5. Remove the converter drain plug and allow it to drain completely. Late 1972 and 1973-77 models use a 5 / 16 in. (8mm) hex head bolt, instead of the previously used 7 / 16 in. (11mm). A six-point socket must be used in the 5 / 16 in. (8mm) head.
  6.  
  7. Reinstall the converter drain plug.
  8.  
  9. Loosen and remove the bolts securing the transmission pan and carefully remove the pan to drain the fluid.
  10.  
  11. Clean the transmission pan thoroughly.
  12.  

To install:
  1. Install the pan using a new gasket. Tighten the pan screws to 150 inch lbs. (17 Nm) in a crisscross pattern.
  2.  
  3. Install the torque converter access plate.
  4.  
  5. Carefully remove the jackstands and lower the vehicle, then immediately (so as not to forget) pour approximately 6 quarts of ATF+3 automatic transmission fluid through the filler tube.
  6.  
  7. Start the engine.
  8.  



Click image to see an enlarged view

Fig. Fig. 1: Automatic Transmission torque converter drain plug



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Fig. Fig. 2: Loosen, but do not remove all of the pan attaching bolts



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Fig. Fig. 3: If the pan is stuck, use a prytool and carefully release the pan. But be careful, If you drop the pan there is enough fluid to make a big mess



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Fig. Fig. 4: Position a new gasket before installation

  1. Let the engine idle for 2 minutes and move the gear selector through all the drive positions, pausing momentarily in each position.
  2.  
  3. Leave the gear selector in Neutral (making sure the parking brake is firmly set) and check the fluid level. If necessary, add enough fluid to bring the level to the "ADD ONE PINT'' mark on the dipstick.
  4.  
  5. Test drive the vehicle to warm the fluid to normal operating temperature, then re-check the fluid level. Add fluid as necessary to properly fill the transmission to the upper (FULL) mark on the dipstick.
  6.  


WARNING
Do not overfill the transmission.

  1. When you are finished, make sure the dipstick is fully seated.
  2.  



Click image to see an enlarged view

Fig. Fig. 5: Fill the transmission with a funnel through the transmission dipstick guide tube

Without Drain Plug
  1. Raise the front of the truck and support it on jackstands. Place a large drain pan under the transmission.
  2.  
  3. Loosen the pan attaching bolts and tap the pan at one corner to break it loose.
  4.  
  5. Allow the fluid to drain into the drain pan.
  6.  
  7. Loosen the pan attaching bolts, then tap the pan at one corner to break it loose.
  8.  
  9. Allow the fluid to drain into the drain pan.
  10.  
  11. After most of the fluid has drained, carefully remove the attaching bolts, lower the pan and drain the rest of the fluid.
  12.  

To install:
  1. Thoroughly clean the fluid pan with safe solvent and allow it to dry.
  2.  
  3. Using a new gasket, install the pan to the transmission. Tighten the attaching bolts to 150 inch lbs. (17 Nm).
  4.  
  5. Pour approximately 4 quarts of ATF+3 automatic transmission fluid in through the dipstick tube.
  6.  
  7. 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.
  8.  
  9. Check the fluid level. Add more fluid as necessary to bring it up to the "ADD ONE PINT'' level.
  10.  
  11. 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.
  12.  

FLUID RECOMMENDATIONS



All Automatic Transmissions, use ATF+3.

FILTER SERVICE



With Converter Drain Plug

See Figures 6 and 7

  1. Jack up the front of the vehicle and support it on jackstands.
  2.  
  3. Remove the converter access plate and turn the converter using the starter, until the converter drain plug is accessible.
  4.  
  5. Remove the converter drain plug and allow it to drain completely. Late 1972 and 1973-77 models use a 5 / 16 in. (8mm) hex head bolt, instead of the previously used 7 / 16 in. (11mm). A six-point socket must be used in the 5 / 16 in. (8mm) head.
  6.  
  7. Reinstall the converter drain plug.
  8.  
  9. Clean the transmission pan thoroughly.
  10.  



Click image to see an enlarged view

Fig. Fig. 6: Clean the pan with safe solvent and a rag. Be sure it is completely dry before installing it

  1. Remove the three screws from the fluid filter in the bottom of the valve body; remove the filter and discard it.
  2.  



Click image to see an enlarged view

Fig. Fig. 7: Remove the filter attaching screws

  1. Install a new filter using three screws.
  2.  
  3. Install the pan using a new gasket. Tighten the pan screws to 150 inch lbs. (16.8 Nm) torque in a crisscross pattern.
  4.  
  5. Install the torque converter access plate.
  6.  
  7. Pour approximately 6 quarts of ATF+3 automatic transmission fluid through the filler tube. If the converter was not drained, use approximately 4 quarts.
  8.  
  9. Start the engine.
  10.  
  11. Let the engine idle for 2 minutes and move the gear selector through all the drive positions, pausing momentarily in each position.
  12.  
  13. Leave the gear selector in Neutral (making sure the parking brake is firmly set) and check the fluid level. If necessary, add enough fluid to bring the level to the "ADD ONE PINT'' mark on the dipstick.
  14.  
  15. Test drive the vehicle to warm the fluid to normal operating temperature, then re-check the fluid level. Add fluid as necessary to properly fill the transmission to the upper (FULL) mark on the dipstick.
  16.  


WARNING
Do not overfill the transmission.

  1. Make sure the dipstick is fully seated and lower the vehicle.
  2.  

Without Drain Plug
  1. Raise the front of the truck and support it on jackstands. Place a large drain pan under the transmission.
  2.  
  3. Loosen the pan attaching bolts and tap the pan at one corner to break it loose.
  4.  
  5. Allow the fluid to drain into the drain pan.
  6.  
  7. After most of the fluid has drained, carefully remove the attaching bolts, lower the pan and drain the rest of the fluid.
  8.  
  9. Remove the filter attaching screws and remove the filter.
  10.  
  11. Install a new filter. Tighten the screws to 35 inch lbs. (47 Nm).
  12.  
  13. Thoroughly clean the fluid pan with safe solvent and allow it to dry.
  14.  
  15. Using a new gasket, install the pan to the transmission. Tighten the attaching bolts to 150 inch lbs. (203 Nm).
  16.  
  17. Pour four quarts of ATF+3 automatic transmission fluid in through the dipstick tube.
  18.  
  19. 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.
  20.  
  21. Check the fluid level. Add more fluid as necessary to bring it up to ADD ONE PINT level.
  22.  
  23. Drive the truck to bring the transmission up to normal operating temperature. Check the level again. It should be between the ADD and FULL marks.
  24.  

 
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