Hyundai Coupes/Sedans 1986-1993 Repair Guide

Automatic Transaxle

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FLUID RECOMMENDATIONS



These units use DEXRON®II automatic transmission fluid.

LEVEL CHECK



See Figure 1

Check the level of the automatic transaxle fluid every 2,000 miles. There is a dipstick at the right side of the engine or transaxle.


CAUTION
The electric cooling fan may switch on any time the engine is running. Keep hands away. The dipstick has a high and low mark which are accurate for level indications only when the transmission is hot (normal operating temperature). The transmission is considered hot after 15 miles of highway driving.

  1. Park the car on a level surface with the engine idling. Apply the parking brake.
  2.  
  3. Shift the transmission to Park.
  4.  
  5. Remove the dipstick, wipe it clean, then reinsert it firmly. Be certain that it has been pushed fully home. Remove the dipstick and check the fluid level while holding the dipstick horizontally. The level should be at or near the high mark.
  6.  



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Fig. Fig. 1: Check the automatic transaxle fluid level by using the dipstick in the transaxle

  1. If the fluid level is below the low mark in the HOT range, add Dexron®II type automatic transmission fluid through the dipstick tube. This is more easily accomplished with the aid of a funnel and hose. Check the level often between additions, being careful not to overfill the transmission. Overfilling will cause slippage, seal damage, and overheating. Approximately one pint of fluid will raise the level from low to high.
  2.  

The fluid on the dipstick should be 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 to locate the cause of the burnt fluid.

DRAIN AND REFILL



See Figure 2 and 3

  1. Jack up the front of the car and support it on jackstands. Remove the lower cover.
  2.  
  3. Slide a drain pan under the differential and remove the drain plug. When the differential is completely drained, move the pan under the transmission, remove the plug and drain. If the plug gasket is worn, replace it with a new one.
  4.  



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Fig. Fig. 2: The automatic transaxle drain plug is located in the transaxle oil pan-location on Excel



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Fig. Fig. 3: The automatic transaxle drain plug is located in the transaxle oil pan-location on Sonata

  1. Reinstall the two drain plugs. Fill the transmission with 4.2 qts. of Dexron®II fluid. Start the engine and allow to idle for at least two minutes. With the parking brake applied, move the selector to each position ending in Neutral.
  2.  
  3. Add sufficient fluid to bring the level to the lower dipstick mark. Recheck the fluid level after the transmission is up to normal operating temperature.
  4.  

PAN AND FILTER SERVICE



See Figures 4, 5 and 6

  1. Raise the front of the vehicle and support it safely.
  2.  
  3. Remove the drain plug from the bottom of the differential and allow the fluid to drain.
  4.  
  5. Position a large drain pan under the oil pan and have plenty of rags on hand.
  6.  
  7. Slightly loosen all the pan bolts. Tap one corner of the pan with a soft hammer to break the seal.
  8.  
  9. Once the pan is broken loose, support it, remove all the bolts, and then tilt it to one side to drain the fluid.
  10.  



Click image to see an enlarged view

Fig. Fig. 4: To remove the transaxle oil pan, remove the pan retaining bolts

  1. Check the oil filter for clogging and damage and replace as necessary.
  2.  
  3. Clean all the gasket surfaces and the inside of the pan thoroughly. Then, raise the pan and gasket in position with bolt holes lined up. Support the pan and replace the bolts, tightening them only very gently with your fingers.
  4.  



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Fig. Fig. 5: Clean the pan thoroughly before installing it



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Fig. Fig. 6: Install a new transaxle oil pan gasket whenever the pan is removed

  1. Tighten the pan bolts diagonally in several stages to 7.5-8.5 ft. lbs. (10-12 Nm).
  2.  
  3. Install the drain plug and torque to 22-25 ft. lbs. (30-35 Nm).
  4.  
  5. Pour fluid in carefully through the dipstick hole until it reaches the lower mark on the dipstick.
  6.  
  7. Start the engine and allow to idle for about two minutes so that the fluid has a chance to warm to normal operating temperature.
  8.  
  9. Check the fluid level as described above and add fluid as necessary.
  10.  

 
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