Transfer Box help please!!!

[bassflicker]

:confused:Alright, firstly I have to admiot I am a complete gearbox dummy. Never had to much around with them but am rather handy and can put my hand to most things mechanical once explained in a simple manner.

I have an 85 County/Isuzu with a four speed box

(I am currently travelling slowly north toward QLD at grafton at the moment)

Two days ago I noticed after a two day highway run that "clean" oil was spraing onto the inside of my drivers side chasis so much so that samll droplets were getting on to the rear diff. I checked the oil in the Trnsfer box and she was still quite full. I have now degreased the area and cleaned it completly and found oil to be running down the box and oil seems to be spraying out of the breathing device mounted on the front of the transfer?????????:confused: Im not sure what that is exactly ? It looks similar to the vaccum advance I had on my old MK1 cortina?? What is this thing and is it a changeable item and where the hell is this oil coming from?

I will admit we had the truck on a mates property the other day getting stupid up some muddy hills revving the gut out of it while 4wd was engaged. We were also using low range quite a bit. Could I have blown a seal or something???? My LR mechanic filled her all up with penrite oils 7000km ago and no leaks were evedent until 6500km.

Please give me your ideas, Im quite worried about this box oil coming out?? I really want to knock this on the head as we have MANY miles to travel.

[bassflicker]

I posted this in the 90,110 defender ,county section but I'm desperate so I'm puttong it here too in the hope that some gearbox guru may poinmt me in the right direction.

:confused:Alright, firstly I have to admiot I am a complete gearbox dummy. Never had to much around with them but am rather handy and can put my hand to most things mechanical once explained in a simple manner.

I have an 85 County/Isuzu with a four speed box

(I am currently travelling slowly north toward QLD at grafton at the moment)

Two days ago I noticed after a two day highway run that "clean" oil was spraing onto the inside of my drivers side chasis so much so that samll droplets were getting on to the rear diff. I checked the oil in the Trnsfer box and she was still quite full. I have now degreased the area and cleaned it completly and found oil to be running down the box and oil seems to be spraying out of the breathing device mounted on the front of the transfer?????????:confused: Im not sure what that is exactly ? It looks similar to the vaccum advance I had on my old MK1 cortina?? What is this thing and is it a changeable item and where the hell is this oil coming from?

I will admit we had the truck on a mates property the other day getting stupid up some muddy hills revving the gut out of it while 4wd was engaged. We were also using low range quite a bit. Could I have blown a seal or something???? My LR mechanic filled her all up with penrite gear oils 7000km ago and no leaks were evedent until 6500km.

Please give me your ideas, Im quite worried about this box oil coming out?? I really want to knock this on the head as we have MANY miles to travel.

Thanks in advance Garth

[Scouse]

Threads merged. Please only post the question in one spot & you'll keep the answers altogether.

I'm sure help will be along shortly but the vacuum actuator is for your diff lock.

[Lotz-A-Landies]

Garth

Are you suggesting that the tube has come off the diaphragm on the top of the transfer case? This is the CDL actuator in the LT95.

Diana

[p38arover]

I will admit we had the truck on a mates property the other day getting stupid up some muddy hills revving the gut out of it while 4wd was engaged. We were also using low range quite a bit.

4WD is engaged all the time on one of those. They are permanent 4WD vehicles :p

[langy]

Blocked gearbox breather(s)?

[steveG]

If its the CDL actuator, its a vacuum operated diaphragm, and there should be 2 plastic vacuum lines on it going to the CDL switch/selector in the cabin.

If one of those lines is missing and the diaphragm is intact then you shouldn't get oil out of it.
Wondering if the breather on the transfer case is blocked, and its forcing the oil out thru a hole in the diaphragm when its hot.

You can check the diaphragm by putting a clean piece of plastic tube on it (some clear stuff would be ideal so you can see if there is any oil coming through), and then sucking on the tube. You should be able to suck a small amount and it build up vaccuum and hold. If it doesn't then the diaphragm is probably stuffed.

I'd be checking the breather in the transfer. It runs from the top of the transfer case down the LH side of the main box and into the engine bay. You should be able to blow quite freely down the tube if you stick your mouth on it.

Steve

[Bearman]

Possibly the seal on the front output shaft. It will throw oil onto the CDL actuator body if it is leaking. Sounds like a possibility after some serious mud running as they are prone to getting mud under the mud shield and onto the seal area. There shouldn't be any way that transfer case oil can leak into the CDL actuator as it has a gasket and O ring on the shaft. You can check if the CDL actuator is working properly by locking the Centre Diff, and the light should come on the dash. If it works ok the diaphragm is not broken.

[bassflicker]

And if it is the seal on the front of the output shaft? is this a dramatically hard job to do? do I need to seperate the transfer case?? I will do some checks on the CDL actuator and get back to you guys...

Thanks so much for the head start:D

[bassflicker]

4WD is engaged all the time on one of those. They are permanent 4WD vehicles :p


Ha ha I do realise it's constant 4wd. What I should have said is with the center diff lock engaged.:bangin:

[isuzurover]

And if it is the seal on the front of the output shaft? is this a dramatically hard job to do? do I need to seperate the transfer case?? I will do some checks on the CDL actuator and get back to you guys...

Thanks so much for the head start:D

LT95 has a one piece case.

AFAIK they commonly pump oil from the gearbox to the t-case. Are you sure your gearbox isn't low and your t-case overfilled?

[TonyC]

And if it is the seal on the front of the output shaft? is this a dramatically hard job to do? do I need to seperate the transfer case?? I will do some checks on the CDL actuator and get back to you guys...

Thanks so much for the head start:D

Front output seal is not hard to do.

Is it a four speed? If so the gear box and transfer are one casing (separate oil).

Tony

[slug_burner]

When people refer to the front output shaft I'd say they are talking about the shaft/flange that connects to the front propshaft via a universal joint. Not a difficult area to work on, you should be able to see if it is leaking from there before you have to pull anything apart.

Check the Gbox level, as already said, the oil can migrate from the gbox to the TCase.

[bassflicker]

Yes mine is a four speed and yes I have now realised shes all one wopping big unit. No seperate transfer case!! Though the casing around the "output shaft" seems to bolt off??

Ok so I wrapped the CDL vaccum in plastic and there is definitely NO oil comming out of it, nor should there be, now that I undestand how it works. I tested it and the diaphram is fine and it engages perfectly. The oil seems to be spraying from behind the shaft that that bolts up to the Uni Joint. I asume there is a bearing and oil seal infront of the locking gears ? And it's coming from there??

One very very kind member near brisbane has offered me a hand to get a look over it, his friend being a LR mechanic and specialising in gearboxes. So Im just going to keep a close eye on my oil levels and call him when I'm heading towards Brisbane. This has releived my worries no end!!

Got to love the Landrover community. Cheers everyone!

Garth.

[Bearman]

Hi Garth, That will be the front output shaft seal leaking. There are 2 types of seal you can get for this shaft. The first one is part number 571175 and the other one is a double lipped seal part number FTC5258. Buy the later type if you can get one (FTC5258)otherwise go the original. even they will last a long time. If you have trouble finding one give me a PM as I have some here. Not a big job to replace especially with the help you have lined up.
P.S.:::: Make sure you use engine oil and not heavy gear oils in both the gearbox and transfer case.

[justinc]

Hi Garth, That will be the front output shaft seal leaking. There are 2 types of seal you can get for this shaft. The first one is part number 571175 and the other one is a double lipped seal part number FTC5258. Buy the later type if you can get one (FTC5258)otherwise go the original. even they will last a long time. If you have trouble finding one give me a PM as I have some here. Not a big job to replace especially with the help you have lined up.
P.S.:::: Make sure you use engine oil and not heavy gear oils in both the gearbox and transfer case.

The FTC 5258 also is the differential pinion seal for late RRC, Disco 1, 2 and Defender (rover diffs only) IIRC Brian.

BTW, Robs truck is up and going, its nice driving a 83,000km old turboed Isuzu 120 around, in my opinion it is a way better ride than a new Puma :)

I have to ring you about it, can I call you tomorrow?

JC

[rovercare]

LT95 has a one piece case.

AFAIK they commonly pump oil from the gearbox to the t-case. Are you sure your gearbox isn't low and your t-case overfilled?

Other way, Tx to gearbag

[wouldbeowner]

And if it is the seal on the front of the output shaft? is this a dramatically hard job to do? do I need to seperate the transfer case?? I will do some checks on the CDL actuator and get back to you guys...

Thanks so much for the head start:D

If it is the same as a defender then no it is not a hard job - almost side of the road stuff.
Have a look at this

Transfer box front output bearing - LR4x4 - The Land Rover Forum (http://forums.lr4x4.com/index.php'showtopic=25053&st=0&#entry254775)
or this
How to Remove/Renew Transfer Case Front Output Shaft Bearing (http://www.discoweb.org/tcasebearing/index.htm)

[Bearman]

If it is the same as a defender then no it is not a hard job - almost side of the road stuff.
Have a look at this

Transfer box front output bearing - LR4x4 - The Land Rover Forum (http://forums.lr4x4.com/index.php'showtopic=25053&st=0&#entry254775)
or this
How to Remove/Renew Transfer Case Front Output Shaft Bearing (http://www.discoweb.org/tcasebearing/index.htm)


Not quite the same as it is an LT95 not an LT230. Your reference parts and pictures refer to the LT230. Still a pretty easy roadside job. But a different seal part number and don't use 80/90 gear oil.