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MGB 1975 MGB Overdrive rear seal

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ScotStern

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I have posted before and stated that when my car is parked on a slight incline (front end up) I seem to have a leak around the overdrive area. When the car is level I really don't seem to have much of a leak if any at all.

Anyway, thanks to all of you, I got instructions on how to jack the car up and put it on stands and I was able to examine the area. It would appear, based upon my initial inspection that the rear seal of the overdrive unit might be leaking which would make sense. I still do have some oil on the filter plate and on the bottom of the case but I do see some on the back of the shaft area where it joins the drive shaft at the overdrive unit.

Anyway, if it is the rear seal of the overdrive, can this be changed on the car or do I have to pull the engine? Is this a job that I could undertake or is it best left to a pro?

Thanks for all of your help...

Scot Stern
1975 and 1979 MGB (both with overdrive)
 
It is not a l\hard job to replace the seal. Disconnect the drive shaft from the tranny. You will see a big nut.Remove it. The flange will then slip off, revealing the seal. You can then pry the seal off and replace it. Make sure that the flange is smooth where it rubs the seal. If it is groved, you may want to consider a speedi-sleeve.
 
...or change it more often than once every forty-odd years /ubbthreads/images/graemlins/wink.gif

Seal should be of common variety, too. A good "bearing house" will have it on the shelf, mebbe as MUCH as $10.
 
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