Chrysler Full-Size Vans 1967-1988 Repair Guide

Transmission

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FLUID RECOMMENDATIONS



Manual Transmissions


New Process A-230: ATF+3
 
New Process A-250: ATF+3
 
New Process A-390: ATF+3
 
New Process A-745: ATF+3
 
New Process A-903: ATF+3
 
Overdrive-4 4-sp: ATF+3
 
New Process 2500: ATF+3
 

If gear noise or rattle is experienced with the A-230/A-250/A-390/A-903/Overdrive-4, SAE 90 gear oil may be used in place of the ATF.

Automatic Transmissions:

All types: ATF+3

LEVEL CHECK



Automatic Transmissions

See Figures 1, 2 and 3



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Fig. Fig. 1: Remove the transmission fluid dipstick to check the transmission fluid level



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Fig. Fig. 2: Wipe the dipstick clean, then reinsert and remove it again. The level should be in the OK area



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Fig. Fig. 3: If fluid is needed, use a funnel, and add enough fluid to obtain the proper reading on the dipstick

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.

  1. Drive the vehicle for 15-20 minutes to allow the transmission to reach operating temperature.
  2.  
  3. Park the van 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.  
  5. Wipe away any dirt in the areas 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.
  6.  
  7. Withdraw the dipstick and note the fluid level. It should be between the upper (FULL) mark and the lower (ADD) mark.
  8.  
  9. 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.
  10.  

Manual Transmission

See Figure 4

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Fig. Fig. 4: Common manual transmission details-NP-2500 shown, other models similar

The fluid level should be checked every 6 months/6,000 miles, whichever comes first.

  1. Park the van on a level surface, turn off the engine, apply the parking brake and block the wheels.
  2.  
  3. Remove the filler plug from the side of the transmission case with a proper size wrench. The fluid level should be even with the bottom of the filler hole.
  4.  
  5. If additional fluid is necessary, add it through the filler hole using a siphon pump or squeeze bottle.
  6.  
  7. Replace the filler plug; do not overtighten.
  8.  

DRAIN & REFILL



Automatic Transmission

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

WITH CONVERTER DRAIN PLUG

See Figures 5, 6, 7, 8, 9 and 10



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Fig. Fig. 5: View of the automatic transmission torque converter drain plug on some 1977 and earlier vehicles



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Fig. Fig. 6: Remove all but two transmission pan bolts, then loosen them and allow the transmission fluid to drain



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Fig. Fig. 7: Remove the fluid pan and locate the transmission filter



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Fig. Fig. 8: Remove the filter attaching bolts and discard the old filter



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Fig. Fig. 9: Clean the transmission pan thoroughly and dry it before installing



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Fig. Fig. 10: Position a new gasket on the transmission pan

To drain only the transmission (not the converter), use the procedure labeled "without drainplug."

  1. Jack up the front of the vehicle and support it on jackstands. Place a large drain pan under the transmission.
  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 the converter to drain completely. Late 1972 and 1973-77 models use a 5 / 16 " hex head bolt, instead of the previously used 7 / 16 ". A six-point socket must be used in the 5 / 16 " head.
  6.  
  7. Remove the bolts securing the transmission pan and carefully remove the pan to drain the fluid.
  8.  
  9. Reinstall the drain plug.
  10.  
  11. Clean the transmission pan thoroughly.
  12.  
  13. Remove the three screws from the fluid filter in the bottom of the valve body; remove the filter and discard it.
  14.  
  15. Install a new filter using three screws.
  16.  
  17. Install the pan using a new gasket. Tighten the pan screws to 150 in. lbs. of torque in a criss-cross pattern.
  18.  
  19. Install the torque converter access plate.
  20.  
  21. Pour 6 quarts of ATF+3®II automatic transmission fluid through the filler tube.
  22.  
  23. Start the engine.
  24.  
  25. Let the engine idle for 2 minutes and move the gear selector through all the drive positions, pausing momentarily in each position.
  26.  
  27. Leave the gear selector in Neutral and check the fluid level. If necessary, add enough fluid to bring the level to the "ADD ONE PINT" mark on the dipstick.
  28.  


WARNING
Do not overfill the transmission!

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

WITHOUT DRAIN PLUG

See Figures 11, 12, 13, 14, 15, 16, 17 and 18

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Fig. Fig. 11: Place a large drain pan under the transmission and remove all but two of the pan bolts



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Fig. Fig. 12: Loosen the two remaining bolts and tap or gently pry the pan loose ...



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Fig. Fig. 13: ... and allow the fluid to drain. Remove the two remaining bolts and the transmission pan



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Fig. Fig. 14: Remove any traces of the old transmission pan gasket from the mounting flange and the pan



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Fig. Fig. 15: The transmission filter is held to the transmission by three attaching screws



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Fig. Fig. 16: Remove the attaching screws ...



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Fig. Fig. 17: ... and then lower and discard the filter-always install a new filter when changing the fluid



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Fig. Fig. 18: Clean the pan and its magnet before installing

  1. Raise the front of the van 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 in. lbs.
  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 in. lbs.
  16.  
  17. Pour four quarts of ATF+3®II 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 the "ADD ONE PINT" level.
  22.  
  23. Drive the van to bring the temperature up to normal operating temperature. Check the level again. It should be between the "Add" and "Full" marks.
  24.  

Manual Transmission
  1. Position the van on a level surface.
  2.  
  3. Place a pan of sufficient capacity under the transmission and remove the upper (fill) plug to provide a vent opening.
  4.  
  5. Remove the lower (drain) plug and allow all of the fluid to drain from the transmission. On the A-390 top-cover three speed, remove the lower extension to case mounting bolt to drain the transmission.
  6.  
  7. Reinstall the drain plug.
  8.  
  9. Pump in sufficient lubricant to bring the level to the bottom of the filler plug opening.
  10.  

Chrysler Corporation has used a variety of transmission lubricants through the years covered in this guide. Please refer to the owner's manual for the proper Lubricant.

 
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