R/R Rear Main Seal by a TOTAL NEWBIE
Thread Starter
CF Veteran
Joined: Jan 2011
Posts: 1,894
Likes: 4
From: Las Vegas
Year: 1999
Model: Cherokee
Engine: 4.0
Hi ya,
Total NEWBIE here
Bought my XJ about a month ago as a project/4x4 rig.
Never done any wrenching but i've been reading quite a bit and thought i make my first attempt on the RMS before my first oil change

Here are my reading list,
http://www.go.jeep-xj.info/HowtoRearMain.htm
http://jeepin.com/features/rearmain
http://www.naxja.org/forum/showthrea...highlight=seal
http://www.naxja.org/forum/showthrea...1025143&page=6 (#82)
http://www.naxja.org/forum/showthrea...025143&page=11 (#164)
Parts list,
Rear main seal #BS40612 (x2, just in case
)
Oil pan gasket #OS34308R
........wish me luck!
Be prepared for some newbie questions next few days
Total NEWBIE here

Bought my XJ about a month ago as a project/4x4 rig.
Never done any wrenching but i've been reading quite a bit and thought i make my first attempt on the RMS before my first oil change


Here are my reading list,
http://www.go.jeep-xj.info/HowtoRearMain.htm
http://jeepin.com/features/rearmain
http://www.naxja.org/forum/showthrea...highlight=seal
http://www.naxja.org/forum/showthrea...1025143&page=6 (#82)
http://www.naxja.org/forum/showthrea...025143&page=11 (#164)
Parts list,
Rear main seal #BS40612 (x2, just in case
)Oil pan gasket #OS34308R
........wish me luck!
Be prepared for some newbie questions next few days
Last edited by BotakBeng; Jan 23, 2011 at 08:20 PM.
Thread Starter
CF Veteran
Joined: Jan 2011
Posts: 1,894
Likes: 4
From: Las Vegas
Year: 1999
Model: Cherokee
Engine: 4.0

Thx yo!
RMS is just one of the leaks but i'm sure i'll get to the valve cover, tranny, differential and soon as i make it thru the RMS replacement .
CF Veteran
Joined: Mar 2010
Posts: 6,685
Likes: 6
From: Jacksonville, FL
Year: 92
Model: Cherokee
Engine: 4.0
when i comes to oil leaks, the best strategy is to start at the top and work your way down.
Thread Starter
CF Veteran
Joined: Jan 2011
Posts: 1,894
Likes: 4
From: Las Vegas
Year: 1999
Model: Cherokee
Engine: 4.0
Damn, i got it the other way round 
I did thought about that, and was thinking of using uv dye but i chose to R/R to gain some wrenching experience.
Gonna degreased it down tomorrow and see.

I did thought about that, and was thinking of using uv dye but i chose to R/R to gain some wrenching experience.
Gonna degreased it down tomorrow and see.
Last edited by BotakBeng; Jan 23, 2011 at 09:00 PM.
I am right in the middle of my first rear main seal dance too
For first attempt this am I disco'd sway bar links, shocks, and steering damper. Lifted Jeep about as high as jack could go and still couldn't get the pan out
.
Tonight I disco'd track bar and lower control arms, and will give it ago again tomorrow. Hope this helps.

For first attempt this am I disco'd sway bar links, shocks, and steering damper. Lifted Jeep about as high as jack could go and still couldn't get the pan out
.Tonight I disco'd track bar and lower control arms, and will give it ago again tomorrow. Hope this helps.
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Thread Starter
CF Veteran
Joined: Jan 2011
Posts: 1,894
Likes: 4
From: Las Vegas
Year: 1999
Model: Cherokee
Engine: 4.0
I am right in the middle of my first rear main seal dance too
For first attempt this am I disco'd sway bar links, shocks, and steering damper. Lifted Jeep about as high as jack could go and still couldn't get the pan out
.
Tonight I disco'd track bar and lower control arms, and will give it ago again tomorrow. Hope this helps.

For first attempt this am I disco'd sway bar links, shocks, and steering damper. Lifted Jeep about as high as jack could go and still couldn't get the pan out
.Tonight I disco'd track bar and lower control arms, and will give it ago again tomorrow. Hope this helps.
In one of the above write-up, you might find something about jacking up the tranny slight to get clearance.
GL .
Thread Starter
CF Veteran
Joined: Jan 2011
Posts: 1,894
Likes: 4
From: Las Vegas
Year: 1999
Model: Cherokee
Engine: 4.0

Oops forgot my RTV....local store don't carry Mopar nor Loctite 518 as recommended, which Permatex would be a good replacement?
They gave me Permatex #2 but i don't really trust them, what do you think?
Found this, looks like Permatex 51813 is it.
Big day tomorrow
Last edited by BotakBeng; Jan 25, 2011 at 12:37 AM.
Well I completed the rear main seal replacement...only time will tell if I did it correctly...
FWIW...top seal was a 'lil harder to tap out than I anticipated, but I did not loosen the other bearing caps...maybe that was why.
Also looking to replace oil pump tomorrow. Was gonna do it today, but I did not realize that the oil pick up line is PRESSED into pump and is not included when you buy new pump...so I ordered a new one plus oil pump gasket. Looking to install those tomorrow...sleepy now...long day...light headed
FWIW...top seal was a 'lil harder to tap out than I anticipated, but I did not loosen the other bearing caps...maybe that was why.
Also looking to replace oil pump tomorrow. Was gonna do it today, but I did not realize that the oil pick up line is PRESSED into pump and is not included when you buy new pump...so I ordered a new one plus oil pump gasket. Looking to install those tomorrow...sleepy now...long day...light headed
Thread Starter
CF Veteran
Joined: Jan 2011
Posts: 1,894
Likes: 4
From: Las Vegas
Year: 1999
Model: Cherokee
Engine: 4.0
Hi guys.
Ran into a problem already

How to remove bolt (1)?
Looks like there is a cover (2) over it, might have to remove (2) to access the bolt (1).
If so, pls advise how to remove cover (2)?
Thx in advance.
Ran into a problem already


How to remove bolt (1)?
Looks like there is a cover (2) over it, might have to remove (2) to access the bolt (1).
If so, pls advise how to remove cover (2)?
Thx in advance.
CF Veteran
Joined: Dec 2009
Posts: 1,400
Likes: 0
From: National Park , South jersey
Year: 1993
Model: Cherokee
Engine: 4.0 IL6
Thread Starter
CF Veteran
Joined: Jan 2011
Posts: 1,894
Likes: 4
From: Las Vegas
Year: 1999
Model: Cherokee
Engine: 4.0
http://go.jeep-xj.info/HowtoRearMain.htm DID you read this ?
Any idea what's that (1) ?
Last edited by BotakBeng; Jan 25, 2011 at 04:02 PM.


