Subaru ff-1/1300/1400/1600/1800/Brat 1970-1984 Repair Guide

Automatic Transaxle

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It is extremely important that the proper lubricant level be maintained at all times in the automatic transaxle. A level which is either too high or too low will result in poor shifting operation and internal damage.


WARNING
Unlike the standard transaxle, the lubricant supply in the automatic transaxle is separate from that in the drive axle. To check the level in the drive axle refer to the appropriate procedure in this section.

FLUID RECOMMENDATION



Dexron II® Automatic Transmission Fluid (ATF) is recommended by Subaru for use in their automatic transaxle.

Unlike the standard transaxle, the lubricant supply in the automatic transaxle is separate from that in the drive axle. The fluid should be changed according to the schedule in the Maintenance Intervals chart. If the vehicle is normally used in severe service the interval should be more frequent. The fluid should be hot before it is drained. A short drive should accomplish this.

LEVEL CHECK



To check the automatic transaxle fluid, drive the vehicle several miles to bring the transmission up to normal operating temperature.

  1. Park the vehicle on a level surface, place the gear selector in Park position and leave the engine idling.
  2.  
  3. Open the hood and locate the automatic transaxle dipstick on the left (driver) side of the engine, near the fire wall. Remove the dipstick, wipe it with a clean rag and reinsert it firmly.
  4.  



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Fig. Fig. 1 Remove the transaxle dipstick to check the fluid level



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Fig. Fig. 2 Differential dipstick (automatic transaxle only)

  1. Remove the dipstick, hold it horizontally and note the reading.
  2.  
  3. As long as the reading is between the upper level and lower level marks the fluid level is correct. If the level is at or below the lower mark, additional fluid is necessary. Add automatic transmission fluid with the Dexron II ® designation only.
  4.  
  5. Fluid should be added through the neck of the dipstick hole using a funnel. With the engine still idling, add fluid in small quantities at a time and recheck the level after each addition. Stop when the fluid level is close to the upper level mark. Avoid overfilling, do not fill above the upper mark.
  6.  
  7. Replace the dipstick and test drive the vehicle to insure proper Transaxle operation.
  8.  


WARNING
The capacity difference between the upper and lower marks is approximately 12 oz. If the drained fluid is discolored, thick, or smells burnt, serious transaxle problems due to overheating should be suspected. Your vehicle's transaxle should be inspected by a transmission specialist to determine the cause.

DRAIN AND REFILL



  1. Park the vehicle on a level surface, turn the engine OFF and apply parking brake.
  2.  
  3. Raise the vehicle and support it with jackstands.
  4.  



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Fig. Fig. 3 Automatic transaxle drain plug location

  1. Place a container of adequate capacity beneath the drain plug located at the bottom, center of the transaxle case.
  2.  
  3. Remove the drain plug and allow the fluid to drain.
  4.  
  5. After draining, replace the drain plug and gasket. do not overtighten .
  6.  
  7. Lower the vehicle.
  8.  
  9. Remove the transaxle dipstick and using a funnel fill the transaxle through the dipstick hole with the proper amount of automatic transmission fluid (see the Capacities chart).
  10.  
  11. Check the fluid level and road test the vehicle to insure proper transaxle operation.
  12.  

PAN AND FILTER SERVICE



Normal maintenance does not require removal of the transaxle oil pan, or changing or cleaning of the oil strainer. However, if a leak is detected at the transaxle oil pan, the gasket it must be replaced.

  1. Park the vehicle on a level surface. Turn the engine OFF
  2.  
  3. Raise the vehicle and support it with jackstands.
  4.  
  5. Remove the drain plug and drain the transaxle fluid into a suitable container.
  6.  



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Fig. Fig. 4 Raise the vehicle and support it with jackstands



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Fig. Fig. 5 Remove all the pan bolts



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Fig. Fig. 6 Remove the pan and gasket



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Fig. Fig. 7 Clean the gasket mating surfaces

  1. Remove all the front and side pan bolts. Loosen the rear bolts about four turns.
  2.  
  3. Pry the pan loose and let it drain.
  4.  
  5. Remove the pan and gasket. Clean the pan thoroughly with solvent and dry it with clean rags. Be careful not to get any lint from the rags in the pan.
  6.  
  7. To remove the oil strainer, unbolt it from the valve body . It can be cleaned in a nonflammable solvent and dried with compressed air or allowed to air dry.
  8.  


WARNING
It is normal to find a SMALL amount of metal shavings in the pan. An excessive amount of metal shavings indicates transaxle damage which must be handled by a professional automatic transmission mechanic.



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Fig. Fig. 8 Unbolt the oil strainer and remove it from the valve body

To install:

  1. Install the oil strainer, new gasket and the pan. Tighten the pan bolts to 2.5-3.3 ft. lbs. (3-4 Nm).
  2.  
  3. Install the drain plug with a new gasket and tighten the plug to 18 ft. lbs. (24 Nm)
  4.  
  5. Lower the vehicle and using a funnel fill the transaxle with the proper amount of automatic transmission fluid (see the capacities chart).
  6.  
  7. Add fluid in small quantities at a time and recheck the level after each addition. Stop when the fluid level is close to the upper level mark. Avoid overfilling, do not fill above the upper mark.
  8.  
  9. Insert the dipstick and test drive the vehicle to insure proper transaxle operation.
  10.  



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Fig. Fig. 9 Fill the transaxle with the proper amount of automatic transmission fluid

 
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