Fj40 transfer case leak (1 Viewer)

[sebfj40]

Hi all
I've recently bought a '77 fj40 and I'm reasonably inexperienced mechanically (I'm 18) although not a complete idiot.
Anyway I've noticed a small oil leak from the rear of the transfer case which causes an occasional drip from the bottom of the handbrake backing plate (or housing?). I've removed the prop shaft and as I began sliding the brake drum off the shaft, oil began to dribble out. I took this opportunity to drain the oil from the case (through the drain plug) to do an oil change. I then removed the drum completely. My question is simply, is there anything I should know about replacing the TC rear shaft seal before I do it.
Also I noticed that on the end of the output shaft there is a soft piece of rubber moulded to the shape of the spline which is sandwiched between the end of the shaft and where it fits into the handbrake drum... Where can I get this from as it is now broken?

Sorry for the novel and the most likely stupid questions

 

[TLC76]

The brake drum seal interface often gets scored, run your nail over it and it shouldn't catch. If it does search "speedi-sleeve" here. If it's smooth get a new seal part #24 in the 4speed transfercase diagram: Specter Off-Road Land Cruiser Parts - Page 068 Land Cruiser Transfercase, Gaskets & Seals

Also, remember to search before you post up a question, there's lot's of posts regarding these types of issues.

Welcome

 

[Marcfj-45]

Everything you need to know is almost there :
https://forum.ih8mud.com/40-55-series-tech/517292-tranny-t-case-gasket.html

 

[Josie'sLandCruiser]

Hi All:

sebfj40, welcome to the world of old Land Cruisers!

Like has been mentioned, the splines on the output shaft wear over time (actually, overly miles!)

Mudrak sells a double-seal housing that seems to do the job to stop this leak at the rear of the t-case. <http://mudrak.org/products.html>

Regards,

Alan

 

[Mad Chemist]

In addition to the speedi-sleeve, it's a good time to put a second seal in the housing, either by buying it from Mudrak or just grinding off the lip and doing yourself (a 1 or 2 banana job at most).

 

[ColonelMustardFJ40]

I think it is also recommended to put a small amount of sealer on the splines of the TC shaft where it enters the brake drum just to complete the seal.

 

[sebfj40]

Thanks
Is the "spline shaped" piece of soft silicone type rubber on the end of the shaft, sealer that has set or is it a specially shaped piece I need to buy?
Also is the seal easy to remove?

 

[Fast Eddy]

Is the "spline shaped" piece of soft silicone type rubber on the end of the shaft, sealer that has set or is it a specially shaped piece I need to buy?
Also is the seal easy to remove?

Sealer that has set.

 

[cruiserjunkie]

Have to pull parking drum off to get to seal but it's just 4 bolts seal will pry out easy

 

[sebfj40]

Thanks guys finally got time to get the parts and do the job. Just need to know how much to torque the big nut on the handbrake drum now... Anyone know?