3-speed Gearbox leak at input end

[Ward Duffield]

Hello

New to me P-15 w/ rebuilt 3-spd

90 wt dripping from clutch pan when sitting parked

Not overfilled

Causes?

Cures?

Thanks

 

Ward D

[P15-D24]

Welch plug on front of tranny case properly set?

Gasket in place between bell housing and tranny?

[greg g]

supposed to be a gasket between trans and bell housing. ends of the trans slider rods are open, gasket seal them.

[suntennis]

One place for leaks is the front face of the transmission just behind the bell housing where the cluster gear shaft mounts in the case. The area for this shaft is just below where the transmission fits to the bell housing.

[_shel_ny]

some pics

[Ward Duffield]

OK fantastic

Now I can look real close and ck for that gasket

Thanks so much

 

Ward D

[_shel_ny]

Note the original gasket on mine was a split gasket. That would allow a gasket to be installed without pulling the transmission all the way out.

[Dodgeb4ya]

Was a shielded front input shaft bearing was installed?

[Ward Duffield]

No idea, but much of the work by the DPO will be redone, I expect.

Thanks to you all for your insights

 

Ward D

[bosworth]

Ward

I found my transmission leaking from the front following my rebuild. I found that I hadn't set the plug that seals the end of the cluster gear shaft well enough. That plug is below the bell housing and is not sealed by the gasket. With the transmission still in the car, I drained the fluid, cleaned the plug and recess thoroughly, and applied sealer. No more leak!

Best of luck

Bill

[Ward Duffield]

You guys nailed it; no gasket installed by DPO.
Anyone have a thickness measurement for the original paper used?
I went to make a gasket today and my paper is all too old, so I'd like to get the right weight paper tomorrow.

Also I guess I'll put sealer on the welch plug.
Thanks again for the help!!!
 
Ward NY

[Dodgeb4ya]

There is not supposed to be a  plug over the end of the cluster gear shaft. The shaft is a interference tight fit at the front of the case and should not leak unless the case bore has been enlarged by improper assembly-shaft installed from the front to rear. The forward end of the cluster shaft is about .003-005" bigger than the other rear end.

Bob

[1941Rick]

I ended up putting a plug on that shaft.....you are it should not be loose but after 70 years things happen....no more leaks

[Dodgeb4ya]

I have seen a few leaking my self. Anything you can do to stop that kind of leak is a good thing!

[_shel_ny]

The gasket material that I used was approx. .030.  Could probably go a bit thicker without problems. Avoid the "make a gasket with a paper grocery sack" advice.

 

 

 

Edit:  this thread may help with a download of the gasket

 

 

 

http://p15-d24.com/topic/23629-transmission-to-bell-housing-gasket/?hl=%2Btransmission+%2Bgasket

Edited February 9, 2014 by shel_ny