Getrag 260 won't stopping leaking

[b_something]

Any thoughts on what could be causing the trans to continue to leak after both the rear seal and selector seals have been replaced with OEM?

[mikebloco]

Did you replace the seal inside the bell housing?

[ttrousdell]

^sounds like its only leaking out of the rear?

Take a look at these threads. Its important to put the sealant on the splines and threads of the output flange.

http://www.bimmerforums.com/forum/showthread.php?807689-Rear-trans-seal-leaks-as-bad-as-the-old-one&highlight=curil

http://www.bimmerforums.com/forum/showthread.php?1914357-Getrag-260-5-speed-transmission-overhall-and-installation

[b_something]

Did you replace the seal inside the bell housing?

Front of trans is good, it is the rear.

[blackis]

Output shaft is worn

[TobyB]

Output flange is worn.

Fixed that for ya. Or it is loose and leaking out the splines.

t

[b_something]

Fixed that for ya. Or it is loose and leaking out the splines.

t

Thanks for the input. About to get back in there and find out. I will post the fix once I get there.

[AndrewBird]

The flange may have a groove worn into it's circumference. Look into buying a speedi-sleeve for it, or buy a new (or good used) flange.

[b*saint]

Sounds like its not the shaft but rather the bushing it rides in. Very common issues on GM transmission extension housings. Bushing wears and the shaft drops. I highly doubt the lip seal wore out the output shaft (which is welded to an output flange.)

[TobyB]

He doesn't have a slip joint on the back of his G260.
Nor a bushing for it to ride in.

There's a bearing on the inside of the rear housing, and the transmission output
flange clamps right against it's inner race. The rear seal then sits right in there, in a recess in the
housing,
and the seal rides on a smooth surface on the output flange. It's similar
to how the nose of the crank seals with the crank pulley/harmonic balancer.

They CAN get a groove worn into them, just like a crank pulley. You'd a thunk
they'da checked it when they changed the seals, but...


Now, if he's swapped out the G260 for a TH350, that's a different matter...

t

[efficient]

Mine leaks and smells burnt after drives. And now it's starting to feel super notchy. I think I'm super low on fluid now

[b*saint]

He doesn't have a slip joint on the back of his G260.
Nor a bushing for it to ride in.

There's a bearing on the inside of the rear housing, and the transmission output
flange clamps right against it's inner race. The rear seal then sits right in there, in a recess in the
housing,
and the seal rides on a smooth surface on the output flange. It's similar
to how the nose of the crank seals with the crank pulley/harmonic balancer.

They CAN get a groove worn into them, just like a crank pulley. You'd a thunk
they'da checked it when they changed the seals, but...


Now, if he's swapped out the G260 for a TH350, that's a different matter...

t

Lol okay thanks for the clarification. You know I knew that too but its been so long since I worked on a 260 and I just have a 4l60 all apart.

[b_something]

I believe the seals were not properly installed the first time. I installed a new rear seal and selector shaft seal and now I am leak free.

Try, try again!