Leaking differential drive seals | FerrariChat

Leaking differential drive seals

Discussion in 'Boxers/TR/M' started by Pingo, Mar 3, 2011.

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  1. Pingo

    Pingo Rookie

    Apr 8, 2007
    36
    The engine is comming out for a major service and it is time to fix some other stuff as well.

    Anyone got experience how to change these seals?
     
  2. Rifledriver

    Rifledriver Three Time F1 World Champ

    Apr 29, 2004
    36,924
    Cowboy Capitol of the World
    Full Name:
    Brian Crall
    Its very easy. The output flanges need to be removed and that can be done with a steering wheel puller then the seals are just like a conventional wheel bearing grease seal.
     
  3. Philwozza

    Philwozza Formula 3

    Apr 23, 2009
    2,045
    Winchester UK
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    Phil Worrall
    A wizard at work :D

    Great new info, thanks Brian.

    P
     
  4. testamon

    testamon Formula Junior

    Aug 16, 2008
    346
    Sydney
    Full Name:
    Mike O
    They may also be leaking if the drive hub retaining bolts were not put in with sealant. They need sealant around when reinstalling to ensure no leaks and the splines of the drive hub also need to be sealed with some sealant like Tribond. If your engine is out you may as well pull the diff side covers off (one at a time) and replace the large O rings.They are cheap and refit those with some rubber grease. That makes it easier to also replace the axle seals and ensure a good straight fitment of the seals.
     
  5. Pingo

    Pingo Rookie

    Apr 8, 2007
    36
    Thank you guys for all input. I think i will change the large o-ring as well as suggested by testamon.

    Does anyone have the part# for the seals and o-rings? The car is a 1988.5 (US).
     
  6. Pingo

    Pingo Rookie

    Apr 8, 2007
    36
    #6 Pingo, Mar 6, 2011
    Last edited by a moderator: Sep 7, 2017
  7. kerrywittig

    kerrywittig Formula 3
    BANNED

    Nov 10, 2005
    1,668
    Ithaca, New York
    Full Name:
    Kerry David Wittig
    I will post part #'s, address and pix of seals later today that are readily available and cost about $6......items just arrived and are at home!

    Post later Me
     
  8. kerrywittig

    kerrywittig Formula 3
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    Nov 10, 2005
    1,668
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    Kerry David Wittig
    #8 kerrywittig, Mar 7, 2011
    Last edited by a moderator: Sep 7, 2017
  9. Pingo

    Pingo Rookie

    Apr 8, 2007
    36
    The upper part is from a hardware store and the bottom part is a custom part welded together by a friend of mine. Works great.
     
  10. kerrywittig

    kerrywittig Formula 3
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    Nov 10, 2005
    1,668
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    Kerry David Wittig
    If you could get some "close-up" pix of those it would be great. Thanks for your time and consideration Pingo!

    Need a closer look Me
     
  11. Pingo

    Pingo Rookie

    Apr 8, 2007
    36
    I have now removed the drive shaft on the left side of the transmission.

    The next step is to remove the bolt securing the flange to the diff. How do i go about this.

    Impact gun/wrench? The axel/diff. just turns when I try to loosen the bolt.

    Is the bolt threaded the normal way/direction?
     
  12. kerrywittig

    kerrywittig Formula 3
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    Nov 10, 2005
    1,668
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    Kerry David Wittig
    Just use an impact.......rotation is counter-clockwise to remove. If you need seals and/or o-rings.....I have full sets available for a fraction of the "normal" cost (o-ring for each side cover and seals)

    Got seals and O's Me
     
  13. Pingo

    Pingo Rookie

    Apr 8, 2007
    36
    The impact gun did the trick, no problem to get the bolt out.

    Next question; how do I get the side cover off? I have removed the nuts securing the cover to the housing and the bolt that sits at the top inside the "tunnel".
     
  14. testamon

    testamon Formula Junior

    Aug 16, 2008
    346
    Sydney
    Full Name:
    Mike O
    The LHS carrier will only come out if you have removed your quill shaft which runs through the carrier. If you have not just take off the bell housing and the shaft will pull out from the box.Tapp with a soft hammer all around to loosen the 'seal'. It should come loose. Do one side at a time and the other bearing carrier will tend to hold the diff in position.
     
  15. Pingo

    Pingo Rookie

    Apr 8, 2007
    36
    Bumping this thread.

    Finnaly got some time to work on the TR again. Removed the bell housing and pulled out the quill shaft.

    The left side diff. cover will now move about 8 - 10 mm. before it's stuck.

    Am I missing something here??

    I have studied this drawing: http://www.eurospares.co.uk/userImages/006/Large/006_030.gif, but cannot see what I am doing wrong.

    So help is needed guys..
     
  16. Pingo

    Pingo Rookie

    Apr 8, 2007
    36
  17. Newman

    Newman F1 World Champ
    Consultant Owner Professional Ferrari Technician

    Dec 26, 2001
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    Newman
    I answered in your PM but ill say it here as well. There is a splash shield bolted to the edge of that cover next to the crown gear. You would have to remove the rear motor mount adaper cover to access that shield. I suspect thats whats hanging up.
     
  18. Newman

    Newman F1 World Champ
    Consultant Owner Professional Ferrari Technician

    Dec 26, 2001
    14,420
    Canada
    Full Name:
    Newman

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