help!
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New User
Joined: Aug 2011
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help!
i have 1978 f-150 4x4 as a daily driver. i do all my own work but my front axle housing is leaking from my driver side. i pulled out my axle to replace my u joints. i have looked every were an talked to all my local mechanics and they are stumped. can some please tell me were or if there is an outer seal is an were is a place to buy them
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Fleet Mechanic
Joined: Feb 2010
Posts: 1,742
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From: Near St. Joseph,MO
Your inner seals keep the oil in. I bet when your driving, the spinning of the axle is drawing the oil out to where it can drip. You have to take apart the diff to replace those two seals.
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Joined: Nov 2010
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^^ What he said. Google "D44 inner axle seal replacement" or similar and you will find step by step info. You can click on the link for my 79 build and you can see what I did to replace them.
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Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
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From: Simi Valley, CA
There are two different front driving axle seals, as it depends on the production date.
The original seal should have a ID number marked on it. Any autoparts store can give you the correct seal by the number.
1978 F150 4WD & Bronco before 6/1978: D3TZ-3254-A .. Axle Seal / Marked: 36913.
1978 F150 4WD & Bronco from 6/1978; 1979 F150 4WD & Bronco: D8TZ-3254-A .. Axle Seal / Marked: 620257.
The original seal should have a ID number marked on it. Any autoparts store can give you the correct seal by the number.
1978 F150 4WD & Bronco before 6/1978: D3TZ-3254-A .. Axle Seal / Marked: 36913.
1978 F150 4WD & Bronco from 6/1978; 1979 F150 4WD & Bronco: D8TZ-3254-A .. Axle Seal / Marked: 620257.
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