Front diff. breather tube location?

[Clayman]

I know this kind of a lamer... But I'm having trouble locating it. She's pretty tight in there, and my front diff was full of water. I popped the cap off and no rust.... cleaned everything really well and pumped her up with 80-90 synth. I should have looked while I had the cap off but.... yeah, I didn't. Now it's raining like a B and it's outside on gravel so I can't really get under it and crawl around!

 

I never put it in 4x4 when I brought it home... so should be ok. Just the O2 sensor, back bumper and diff breather extensions to go! It's so close!

 

Any help would make you a rockstar! Thanks!

 

Clay

[Clayman]

Gonna add another lamer.... is the Xfer case connected to the tranny for its oil supply? I see a drain plug but no filler plug. Is that a secondary drain plug? or does it actually have it's own oil fill?

 

Thanx again,

Clay

[GrimGreg]

I think the breather goes over the the passenger side fire wall under the wiper motor. As for the fill/check it's in the very front of the diff, not shared with t-case.

[Vsicks Pathy]

On the aussie models the breather is in the engine bay on the drivers side. So, it should be on the passanger side of your Pathy about 10 or so inches from the firewall toward the front. It looks like the top part of a coat hanger.

 

Also with the tranny. A manual gearbox shares the oil with the transfer case. I would not have a clue about an auto but assume it wouldn't be the same. I will hazard a gues that the transfer case needs oil and the auto need fluid.

Edited September 5, 2005 by Vsicks Pathy

[MaritimeMan]

I think that information is incorrect there Vsicks. The manual calls for GL-4 in the manual tranny and ATF in the xfer case. I have also had both apart and can tell you they are sealed from each other, even though they bolt together. It kinda baffles me why you would want to use two different fluid in there, especialy if you blew a seal or what not, but thats what it calls for. Sorry man, don't mean to be a jerk, just don't want misinformation goin out, ya know.

[Clayman]

Ok... so there must be a filler plug somwhere on the Xfer case. I finally got a sunny day here.... I'm going get under it and try to find the little bugger. We'll find out soon enough if it's red or not. If it is ATF there's probably some hydraulic operation involved. Not sure what... but then it's a Nissan isn't it! They make awesome complicated stuff that works great until it breaks. LOL!

 

Thanks for the breather tube Location, sounds like they already have it out of the way.... but I had water in my diff so I absolutely have to make sure it's not damaged. At least I can follow it down now. I couldn't locate it around the diff housing anywhere, so it may be broken off.

 

Thanks for the help guys!

Clay

Edited September 5, 2005 by Clayman

[Vsicks Pathy]

I think that information is incorrect there Vsicks. The manual calls for GL-4 in the manual tranny and ATF in the xfer case. I have also had both apart and can tell you they are sealed from each other, even though they bolt together. It kinda baffles me why you would want to use two different fluid in there, especialy if you blew a seal or what not, but thats what it calls for. Sorry man, don't mean to be a jerk, just don't want misinformation goin out, ya know.

Sorry, I was a little vague to say the least. I meant that the gearbox and transfer case shared the same oil, not 'shared' the same oil. Know what I mean? As for what the manual says your probably correct MM. I never looked. Having said that mines been running fine for the last 3 years with gearbox oil in it.

 

This link might help you out Clayman as to where you may want to fill.

[Clayman]

Found the front diff vent... right in the cover just behind the sway bar. The tube was missing off mine, hence the water in my diff. All fixed up now. I extended the rear one up behind my taillight.

 

Found the fill plug for the Xfer case... dead center on the back above the cross member , not a handy place! It's in between the webbing on the case... mine was caked in mud, that's why I couldn't see it.

 

Xfer case - 75w90 or 80w90 GL-5 - I used GL-4 about 2.2 litres

 

Manual Tranny - 75W90 / 80W90 GL4 ONLY 5.1 litres

 

Auto Tranny - ATF - Dexron III

 

Rear diff - 75W90 / 80W90 GL - 5

 

Front diff - 75W90 / 80W90 GL -5

 

*** GL-4 is high pressure Gear oil if you use GL-5 in low range you'll burn out your Syncros *** That's the reasoning that I got.

 

Then after all that, I finally got to test out my 4 wheel in the parking lot and my passenger side CV axle is bitched. Bummer! Oh well Atleast they're easy to change.

So now I'm down to an O2 sensor, axle, and mount my rear bumper. Almost! Almost!

 

Thanks for all the help guys!

 

Clay.

[Vsicks Pathy]

Found the front diff vent... right in the cover just behind the sway bar. The tube was missing off mine, hence the water in my diff. All fixed up now. I extended the rear one up behind my taillight.

 

Found the fill plug for the Xfer case... dead center on the back above the cross member , not a handy place! It's in between the webbing on the case... mine was caked in mud, that's why I couldn't see it.

 

Xfer case - 75w90 or 80w90 GL-5 - I used GL-4 about 2.2 litres

 

Manual Tranny - 75W90 / 80W90 GL4 ONLY 5.1 litres

 

Auto Tranny - ATF - Dexron III

 

Rear diff - 75W90 / 80W90 GL - 5

 

Front diff - 75W90 / 80W90 GL -5

 

*** GL-4 is high pressure Gear oil if you use GL-5 in low range you'll burn out your Syncros *** That's the reasoning that I got.

 

Then after all that, I finally got to test out my 4 wheel in the parking lot and my passenger side CV axle is bitched. Bummer! Oh well Atleast they're easy to change.

So now I'm down to an O2 sensor, axle, and mount my rear bumper. Almost! Almost!

 

Thanks for all the help guys!

 

Clay.

So you used the same oil in both the gearbox and the transfer case? I am a little cocerned because I did too and the manual states a different oil. Nothing has gone thud yet but I am wondering.

[RedPath88]

Here is some info from three different sources...

 

1988 Factory Owners Manual (Came new with my truck)

 

Haynes Repair Manual (#72030)

 

Chilton’s Repair Manual (#52500)

 

If you take note of the Haynes manual entry, you will find that Both MM and V6 appear to be correct on which oil the Transfer Case uses... the confusion may be in the years the oil/fluid is used.

 

Can anyone with a 91-95 WD21 verify the oil for the transfer case? Maybe through an Factory Owners Manual (FOM) or Factory Service Manual (FSM)?

[Vsicks Pathy]

That just confuses the masses even more.

[GrimGreg]

I always heard that the T-case gets the same as the tranny depending on the tranny.

[RedPath88]

That just confuses the masses even more.

Maybe so, but this might be something we need to figure out before someone is handed incorrect info and loses a xfer case as a result -thnkboutit-

[RedPath88]

I always heard that the T-case gets the same as the tranny depending on the tranny.

Thats the way my Yota is.. and it was always my belief that most, if not all were the same

[Vsicks Pathy]

I am wondering what the OEM part number(s) for a transfer case is. I would have thought that they would all be the same, and am thinking that perhaps MM is on the money with the, what if a seal blew question. Perhap being auto or manual decides what goes in the Tcase and the Tcase can take either. Ah! The sweet complexities of it all.

[geordie4x4]

I had my auto gearbox and transfer case serviced by a Nissan dealer in Aus and they told me it should have genuine Nissmatic D fluid in both. (1992 Terrano)

However for some strange reason they put Dextron II in the Auto box and when they were rebuilding it on warranty about a year later told me that this should never have occurred. Must have been 'the gremlins'.

 

I have since discussed this with several reputable auto gearbox specialists and been recommended to use genuine Nissmatic D or DX-III in the auto box and light gearbox oil in the trans case 80W-90 API GL-4.