Mud-club

Vehicle & Technical => Discovery => Topic started by: Jubby on May 04, 2005, 07:53:40

Title: Oil Leak from inside Handbrake Drum - Transfer box seal ?
Post by: Jubby on May 04, 2005, 07:53:40

I've got quite a bad Oil leak from inside the Handbrake Drum.

I suspect its the Transfer box, output shaft seal.    I've removed the propshaft & Drum covering and can see what looks like a 30mm  
Bolt on a shaft inside a bearing.  This seems to be the only place the oil can come from  Anyone know whats behind this, Is it an oil seal or bearing or both ?

The Haynes manual doesn't touch the Transfer box.


Jubby

Title: Oil Leak from inside Handbrake Drum - Transfer box seal ?
Post by: muddyweb on May 04, 2005, 08:26:32

The output flange is there, with the big nut in the middle.  The flange sits in the oil seal and will just slide out if you remove the nut.  Behind that is the output shaft bearing.

Changing the seal is a simple enough job, just pull the old one out and put the new one back in.

Title: Oil Leak from inside Handbrake Drum - Transfer box seal ?
Post by: Jubby on May 04, 2005, 10:55:44

Thanks Tim,  I was hopeing that was the Case!

A simple Job for a change !

Regards,

Jubby

Title: Oil Leak from inside Handbrake Drum - Transfer box seal ?
Post by: Wanderer on May 05, 2005, 14:00:06

The big problem comes if there's a problem causing the seal to fail. I've recently had a problem with the front seal and ended up changing the bearing (taking photos most of the way along the line), it was a mare of a job.

Ed

Title: Oil Leak from inside Handbrake Drum - Transfer box seal ?
Post by: Jubby on May 05, 2005, 18:00:49

I was expecting the 30mm nut to take some shifting, considering the size of it.   £6 for a quality 30mm socket, and with a extension bar set to work on it.

It was bl**dy Lose !

Just loosened it slightly and the Oil flooded out.  

Hopefully it has just come lose over time.   I've tightened it up and it seems to have cured it.  Just need a long run, towing the Caravan to check it out !

Fingers crossed.

Jubby

Title: Oil Leak from inside Handbrake Drum - Transfer box seal ?
Post by: Wanderer on May 05, 2005, 19:56:46

Chock the wheel and then take the handbrake off. Somone sitting in the vehicle applying the footbrake helps.
Then try to see if there's any movement. It might be the bearing that has gone causing the seal to fail.
Mine only leaked (on the front) when I was towing the caravan (at first) and then started to leak while driving normally. A new seal didn't even last a fortnight.
Nipping it up might help. There's a taper bearing on the front shaft but I can't see one on the rear shaft.

Ed

Title: Oil Leak from inside Handbrake Drum - Transfer box seal ?
Post by: Wanderer on May 06, 2005, 16:34:02

I said

Nipping it up might help. There's a taper bearing on the front shaft but I can't see one on the rear shaft.

Ignore that. It won't pull the taper bearing up at all  :oops:

Too complicated these transfer boxes.

Ed