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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

Leaking Front seal on Rear Diff Housing

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Old Nov 12, 2009 | 02:18 AM
  #1  
Imdok's Avatar
Imdok
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From: Alaska
Leaking Front seal on Rear Diff Housing

There is a leak on the front side seal of the rear differential.

How miserable are these to change out?

Thanks
 
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Old Nov 12, 2009 | 03:22 AM
  #2  
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Jmeyer1990
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We had talked about this in one of our chat threads, it's too late for my to locate it (i'll try later) My truck is doing the same thing.

According to the help I was given, the axle needs to come off, there are a few specialty tools you will need, and that's about it. It's more tedious work, than difficult is what I gathered.

I'll see if I can locate the thread tomorrow.
 
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Old Nov 12, 2009 | 03:35 AM
  #3  
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From: Western Central NV
What rear end is it. I have a 10.25 Sterling in mine & I replaced mine by removing the drive line pulling off the yoke, pulling the seal, then reinstalling a new seal. No special tools. Although the yoke nut is tight & an air gun may need to be used. I believe it torques over 150 pounds.
Craig
 
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Old Nov 12, 2009 | 03:35 AM
  #4  
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kermmydog
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From: Western Central NV
What rear end is it. I have a 10.25 Sterling in mine & I replaced mine by removing the drive line pulling off the yoke, pulling the seal, then reinstalling a new seal. No special tools. Although the yoke nut is tight & an air gun may need to be used. I believe it torques over 150 pounds.
Craig
 
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Old Nov 12, 2009 | 05:16 AM
  #5  
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ArdWrknTrk
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From: EXTREME southwest CT
Club FTE Silver Member

I don't think the 10.25 happened until 1983.
If it is a 10.25, you need to replace the crush collar and might want to replace the pinion nut as well.

If it has a plug on the stamped steel back cover it is a Dana axle, the 10.25" has only a fill plug on the drivers side front face.
 
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