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

Differential Oil Seals

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REMOVAL & INSTALLATION



Front Oil Seal
  1. Drain the differential gear oil as outlined in .
  2.  
  3. Raise the rear wheels and support the car with jackstands.
  4.  
  5. Remove the driveshaft as outlined earlier in this section.
  6.  
  7. Measure the turning resistance of the differential companion flange. To do this, attach either a spring scale or an inch pound torque wrench to one of the mounting holes. Make sure that the flange turns smoothly, and then turn the flange through one complete revolution using the scale or torque wrench. Mark down the reading registered. It will be used during installation.
  8.  
  9. Remove the drive pinion nut while holding the companion flange with a flange or pipe wrench.
  10.  
  11. Remove the companion flange and oil seal with a puller.
  12.  
  13. Using a drift, tap in a new oil seal.
  14.  

To install:

  1. Install the companion flange.
  2.  
  3. Tighten the pinion nut to 123-145 ft. lbs. (167-196 Nm). The proper torque has been reached when the turning resistance of the companion flange is the same as it was when measured in Step 4.
  4.  
  5. Stake the pinion nut with a punch.
  6.  



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Fig. Fig. 1 Measuring the turning resistance of the companion flange

Side Oil Seal
  1. Drain the differential oil as outlined in .
  2.  
  3. Raise the rear wheels and support the car with jackstands.
  4.  
  5. Remove the side yolk retaining bolt and pull the side yolk out of the differential carrier.
  6.  
  7. Extract the oil seal with a puller.
  8.  

To install:

  1. Using a drift, tap in a new oil seal.
  2.  
  3. Install the side yoke and tighten the retaining bolt.
  4.  



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Fig. Fig. 2 Use a puller to remove the companion flange



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Fig. Fig. 3 a special puller is also used to remove the front oil seal



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Fig. Fig. 4 Pulling the side seal from the differential housing



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Fig. Fig. 5 Troubleshooting the Manual Transmission and Transfer Case



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Fig. Fig. 6 Troubleshooting the Manual Transmission and Transfer Case (cont.)



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Fig. Fig. 7 Troubleshooting Basic Clutch Problems



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Fig. Fig. 8 Troubleshooting Basic Automatic Transmission Problems



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Fig. Fig. 9 Troubleshooting Basic Automatic Transmission Problems (cont.)



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Fig. Fig. 10 Lockup Torque Convertor Service Diagnosis



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Fig. Fig. 11 Lockup Torque Convertor Service Diagnosis (cont.)



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Fig. Fig. 12 Transmission Fluid Indications



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Fig. Fig. 13 Special Tools, Manual Transmission and Differential



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Fig. Fig. 14 Special Tools, Manual Transmission and Differential:



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Fig. Fig. 15 Special Tools, Manual Transmission and Differential:



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Fig. Fig. 16 Special Tools, Manual Transmission and Differential:



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Fig. Fig. 17 Special Tools, Manual Transmission and Differential:



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Fig. Fig. 18 Special Tools, Automatic Transmission and Differential:



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Fig. Fig. 19 Special Tools, Automatic Transmission and Differential:



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Fig. Fig. 20 Special Tools, Automatic Transmission and Differential:



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Fig. Fig. 21 Special Tools, Automatic Transmission and Differential:



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Fig. Fig. 22 Special Tools, Automatic Transmission and Differential:

 
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