Topic: Pass side axle leak.

[Complete Loser]

Well, i seen some lube on the ground from my pass side d30 axle. So, i picked up some seals yesterday. The guy didnt have a clue what to sell me. So he sold me the $20/ea seals ofcourse
But they are some damn funky looking seals. Kinda have a bell looking end on them.

This will be my first time changin any axle seals, let alone a jeeps, so i searched this site as much as i could.
Will i need to remove the diff cover and a c clip to pull out the drivers side axle shaft? I read some people were changing what looked like an inner seal?, where others were talking about (i assume) an outer seal. ?
Which one do i need to change?

From which direction are the seals installed (ie, drivers side installed from the outside?)

Is there anything else i should be changing while im inside there ( bushing, bearing, etc...)?

[Complete Loser]

Oh. And what is "DC"? I see mentioned alot about a place one can get parts. But this place is only referred to as "DC".

[sharpxmen]

Well, i seen some lube on the ground from my pass side d30 axle. So, i picked up some seals yesterday. The guy didnt have a clue what to sell me. So he sold me the $20/ea seals ofcourse
But they are some damn funky looking seals. Kinda have a bell looking end on them.

This will be my first time changin any axle seals, let alone a jeeps, so i searched this site as much as i could.
Will i need to remove the diff cover and a c clip to pull out the drivers side axle shaft? I read some people were changing what looked like an inner seal?, where others were talking about (i assume) an outer seal. ?
Which one do i need to change?

From which direction are the seals installed (ie, drivers side installed from the outside?)

Is there anything else i should be changing while im inside there ( bushing, bearing, etc...)?

is this front or rear? there are no c-clips in front, so i take it's the rear axle - pull the axle out, the seal is pressed in from the outside at the end of the tube (in the flange that is welded at the end of the tube). Not sure about the way the seals look, mine were just normal looking ones. As far as what else to install i would check the bearings while you're at it (they're right behind the seal).

[Complete Loser]

Sorry. This is front dana 30 with the vac disconnect.

[FourbangerYJ]

Oh. And what is "DC"? I see mentioned alot about a place one can get parts. But this place is only referred to as "DC".

DC is no longer in business. He was a small retail shop that had some low prices.

http://www.stu-offroad.com/axle/d30seals/seal-1.htm
This might help even thou it's for a D30 from a TJ not from a vac disconnect YJ.

[Complete Loser]

Yup. ive already read through that. That is the inner oil seal they are replacing. I think i am wanting to change the outer seal.

[sharpxmen]

Sorry. This is front dana 30 with the vac disconnect.

look at the '94 YJ Factory Service Manual from the home page on this site and more specifically this doc http://www.4bangerjp.com/fsm/1994/94XJ_02%20-%20Front%20Suspension%20and%20Axle.PDF , there is a detailed procedure in there on how to replace the seals in the D30 disconnect including drawings.
page 31 (EDIT: page 30 in the '94 manual, i was looking at '95) for the disconnect seal replacement
page 35 (EDIT: page 33 in the '94 manual) for the inner axle seals (one on each side of the diff housing).

[Complete Loser]

Ok. Thanks for that info. I guess part of my problem is not knowing what question to ask.
Is there an outer seal on the drivers side of the D30 vac dissconnect style axle?


I def dont have the right seals. lol

[sharpxmen]

Ok. Thanks for that info. I guess part of my problem is not knowing what question to ask.
Is there an outer seal on the drivers side of the D30 vac dissconnect style axle?


I def dont have the right seals. lol

yes, there is an inner and outer seal on the pass side and I just noticed that you mentioned that is the outer seal you want replaced - you can use a long threaded rod with fender washers (available at home depot) to pull the seal in place instead of the special tool they're using, you'll need to remove the vac motor, knuckle and axle for that

if you're replacing this b/c you see oil at the end of the axle then you'll need to replace both inner and outer seals, the disconnect is not lubricated by the oil in the diff housing.

You might want to also check the intermediate bearing in there while you're at it

EDIT: read those pages in the link i posted, you'll get an idea what you're up against - the intermediate bearing is more challenging as you will need to fab a sturdy tool to pull it out so if it's not damaged you might want to skip it this time around but if it is seized (the needles in it) i would go ahead and do it.

[Complete Loser]

if you're replacing this b/c you see oil at the end of the axle then you'll need to replace both inner and outer seals, the disconnect is not lubricated by the oil in the diff housing.

Ok. exactly what i wanted to know. Just to be clear. By 'inner' you mean the ones that require removing the diff?

[Complete Loser]

also, why would leaking out pass side mean i need to change pass inner? If the outer is the one leaking?

Not a problem. Just curious.

Also, i still see no mention of an outer seal on the drivers side.

I just wish there was one large print of the damn axle that showed every element.

[sharpxmen]

also, why would leaking out pass side mean i need to change pass inner? If the outer is the one leaking?

Not a problem. Just curious.

Also, i still see no mention of an outer seal on the drivers side.

the inner axle seals are in the diff housing, there is only one outer in the axle disconnect housing, no outer on the driver's side

it means the diff oil makes it past the inner and outer seals so they're both bad, although the outer is only supposed to hold the multipurpose lubricant so could be good enough for that.

I just wish there was one large print of the damn axle that showed every element.

santa claus came early - your wish has been granted http://www.jeep4x4center.com/jeep-axle-differential-parts/dana30-front-wrangler-yj.htm

[Complete Loser]

OH. Ok. i understand.
I filled my vac housing with basically the same thing i put in the diff. Lucas oil.

So i guess, it would be wise to use 2 distinctly different fluids. So as to determine which seal is leaking (if not both).

Thanks for the great info. Now to go back to the store and get a seal thats not for an Indonesian Dihatsu!  

[sharpxmen]

OH. Ok. i understand.
I filled my vac housing with basically the same thing i put in the diff. Lucas oil.

So i guess, it would be wise to use 2 distinctly different fluids. So as to determine which seal is leaking (if not both).

Thanks for the great info. Now to go back to the store and get a seal thats not for an Indonesian Dihatsu!  

EDIT: from FSM
"Add 148 ml (5 ounces) of API grade GL 5 hypoid
gear lubricant to the shift motor housing. Add
lubricant through indicator switch mounting hole."

i thought it takes grease but obviously not, i guess that's why it was coming out of 4wd (the light) after 5 min in my case

EDIT 2: and got me thinking, maybe you only need the outer seal but that depends if you're missing any in the diff housing or not

[Complete Loser]

im right there with you in that thinking. I will give it some time, and will peep inside the diff cover fill hole to have a look at the level.
I built my own mechanical linkage for the shift motor. So i dont know about the 4wd dropping out. Mine locks into place at each position (2wd and 4wd.)
I basically used some heavy duty cable shifter from..... something heavy duty (i have no idea) and built everything else out of an old zgate shifter i had layin around. It works SUHWEEET!