Thursday, January 17, 2019

Transmission seal replacement

Evening,
After cleaning the layers of grease and dirt out of the bellhousing I proceeded to replace the seals on the input shaft and the output flange.  I had to make a gasket for the seal carrier for the output flange then removed the speedometer drive to replace the 'O' ring and seal for the speedometer drive shaft.
Hopefully this will ensure that the transmission remains leak free for years to come, (Oh Sure-it's British, Dream on!)

Why spend so much time cleaning?  It's to keep crap out of the innards when your replacing the seals.


Where the input seal goes, area cleaned up and seal outer edge coated with sealant then driven home

New throw out bearing, grease and clips that hold the bearing mount in place

The 'fork' that holds the throw out bearing

Throw out bearing in fork

Clip that holds the throwout bearing onto the fork

The housing that holds the rear transmission seal.  This was a bugger to get off, the screws were resistant to removal!  I broke my impact screw driver then I had to use a punch to loosen them.  After I got them out I ground the damage down, cleaned them up and reused them.  I'll see if I can find replacements but I suspect they are a 'specialty' fastener and will be hard to find.  This had to be removed to replace the seal which I replaced today and again sealed the seal against the housing.

This is speedometer drive and angle drive


All back together with new seals 
Well, that's it for today. Thanks for looking!

Cheers,
Lynn


7 hrs

2 comments:

  1. I need to replace my gearbox seals eventually. (Don't delete your blog!) It leaks onto the mufflers and provides a nice aroma of hot gearbox oil after a long drive. :-)

    Are these what you need: https://www.sngbarratt.com/us/#!/English/parts/dbc614fa-8030-481b-ad56-0d2884998bd1

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    Replies
    1. Hi Drew,
      That they are, I'll have to get another order off next week I suspect-Thanks! I was going to put a Speedeseal on the flange but couldn't find one the correct size so I polished the flange up just a bit, There is no way I could have replaced the rear seal in situ, those screws were scary tight! I was on the verge of getting the welder out to weld something on it but it finally gave way.
      Thanks again,
      Cheers,
      Lynn

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