Need to replace TT bearings auto 85. Dont want to remove tranny. Is it possible?
11-30-2017, 05:58 PM
#16
Team Owner
chances are good you will also need the Torque converter bearings replaced,
then you might as well swap out the the front pump O ring and TC radial seal,
this is easy to do if you stand the trans on its end it reduces the chance of damage to the radial seal.
no way do I want to do this with the trans balanced on the cross member teetering .
Of all the things you can shortcut this would be one that i would not try.
the only way to fix a bent driveshaft is to replace it.
I have had to replace a few over the years due to mechanics not being careful with the TT
then you might as well swap out the the front pump O ring and TC radial seal,
this is easy to do if you stand the trans on its end it reduces the chance of damage to the radial seal.
no way do I want to do this with the trans balanced on the cross member teetering .
Of all the things you can shortcut this would be one that i would not try.
the only way to fix a bent driveshaft is to replace it.
I have had to replace a few over the years due to mechanics not being careful with the TT
12-01-2017, 04:57 PM
#17
Rennlist Member
I have removed the TT on an Auto w/o cutting anything or removing the Trans, but the bell housing had to be unbolted from the engine and turned.
Easier to just cut the Lower Bell and drop the protruding Driveshaft through it.
IMO dropping the trans and TT as a unit is the best way to service the TT and the TQ and trans seals/cooling lines all at the same time.
Dave K
Easier to just cut the Lower Bell and drop the protruding Driveshaft through it.
IMO dropping the trans and TT as a unit is the best way to service the TT and the TQ and trans seals/cooling lines all at the same time.
Dave K
02-28-2021, 05:04 AM
#18
Yes, you can remove the torque tube with the trans in the car. I've done it twice. a few years ago I had TC housing bearing failure when coming back from third coast. We dropped the TT and Trans at that time. I replaced the TC housing bearings and resealed the Trans pump while I was there. With lots of help and facilities from the local 928 crew.
Subsequently shortly after reinstall I was getting bearing noise again. I assumed the TT bearings had taken damage due to the failed TC bearing.
This time I dropped only the TT. to do this you will need to unbolt the trans mounts from the cross member and slide the trans back about an inch. and you will need to remove the front bell housing. I found this easier than the full trans drop for this second removal as I was at home on jack stand and doing the job by myself. I replaced the TT bearings and reinstalled the TT.
Upon start up the bearing noise was still there (determined to be a bad replacement bearing in the TC which I had installed at the first trans drop). So again I dropped just the TT, then I removed the TC housing from the trans with the trans still in the car and replaced the TC housing bearings a second time. Been running great ever since.
So the moral of the story is that it can be done, and given the motivation you could do the TC housing and pump seal work with the trans in the car. If I were just doing the TT and TC bearings I think this is a viable option. if you plan to reseal the trans while you do bearings, it is probably more convenient to just drop the whole thing and work the trans in a more comfortable position.
Subsequently shortly after reinstall I was getting bearing noise again. I assumed the TT bearings had taken damage due to the failed TC bearing.
This time I dropped only the TT. to do this you will need to unbolt the trans mounts from the cross member and slide the trans back about an inch. and you will need to remove the front bell housing. I found this easier than the full trans drop for this second removal as I was at home on jack stand and doing the job by myself. I replaced the TT bearings and reinstalled the TT.
Upon start up the bearing noise was still there (determined to be a bad replacement bearing in the TC which I had installed at the first trans drop). So again I dropped just the TT, then I removed the TC housing from the trans with the trans still in the car and replaced the TC housing bearings a second time. Been running great ever since.
So the moral of the story is that it can be done, and given the motivation you could do the TC housing and pump seal work with the trans in the car. If I were just doing the TT and TC bearings I think this is a viable option. if you plan to reseal the trans while you do bearings, it is probably more convenient to just drop the whole thing and work the trans in a more comfortable position.
sorry for digging up an old thread but this is the information I’m after, was this car an auto? I’m replacing TT and TC bearings tomorrow and I would really appreciate the advice.
thanks
mark
02-28-2021, 03:33 PM
#19
Rennlist Member
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Markwilson_ (02-28-2021)
03-01-2021, 12:32 PM
#20
Rennlist Member
Yes, you can remove the TT without removing the trans, and it can be done without cutting the bell housing.
Last edited by 76FJ55; 03-01-2021 at 12:34 PM.