Rear seal leaking. [Archive] - MercuryMarauder.net Forums

Midnight

03-09-2013, 03:36 PM

Hello all! So, leaking down the back end of my oil pan is nice fresh oil... Apparently the rear seal is leaking?

How hard is this to replace? PITA? Can the transmission be removed and the seal replaced without removing the engine?

Let me know please!

Thanks all!!!!

150,407 miles. Drives like new. Looks like new. Will never sell!

Midnight

03-09-2013, 06:18 PM

Does anyone have any ideas?

RF Overlord

03-09-2013, 07:20 PM

Looking at the FSM, it appears that replacing the rear main seal can be done with the engine in the car. It looks fairly simple once the transmission and flex-plate are removed, but the FSM says special installation tools are required. I've never done this on a mod motor, so I can't be more help.

Midnight

03-09-2013, 07:28 PM

My engine is not modified. It's stock

Midnight

03-09-2013, 07:30 PM

I'll buy the special tool I have no problem with that When I have to do my valve cover gasket change I had to buy a
Disconnect tool that wasn't too expensive

martyo

03-09-2013, 07:44 PM

My engine is not modified. It's stock

By "mod" motor RF was referring to the fact that a Marauder motor is of the modular or "mod" class of motors.

Midnight

03-09-2013, 08:35 PM

Truuuuueee my bad!

Midnight

03-09-2013, 08:37 PM

I'm gonna spray some engine cleaner all under there.... Try and isolate the issue.

martyo

03-09-2013, 08:42 PM

I'm gonna spray some engine cleaner all under there.... Try and isolate the issue.

Consider using leak detector and a UV pen/tinted glasses. It will lead you to the leak.

Midnight

03-09-2013, 08:45 PM

What does FSM mean?

Midnight

03-09-2013, 08:46 PM

Sorry for sounding retarded, do I need to put a dye in the oil?

fastblackmerc

03-09-2013, 08:52 PM

What does FSM mean?

FSM = Ford Shop Manual

Midnight

03-09-2013, 08:56 PM

Gooootcha!!! I don't have access to one of those. Anyone have a PDF format of it?

martyo

03-09-2013, 08:58 PM

Sorry for sounding retarded, do I need to put a dye in the oil?

Yep.

...............

vegasmarauder

03-09-2013, 11:48 PM

I have seen these engines with 200K plus miles on them with no rear seal leaks. WHat does leak is the oil pan gasket, especially towards the back. It runs down and looks like the rear seal. Usually a rear seal leak will cause the oil to be on the inside of the engine/trans seperator plate. Pan seal will have it run down the outside of the pan. Power wash it off under there and take another look, I'll bet it's the pan seal. Manual says the engine has to be lifted out to change it. I think it can be done with the trans out and the engine lifted slightly, but I have not done one.

martyo

03-10-2013, 05:22 AM

Midnight

03-10-2013, 07:52 AM

Could I just lower the pan and man handle a new gasket in there? Lol!!! Possible?

SC Cheesehead

03-10-2013, 08:02 AM

Gooootcha!!! I don't have access to one of those. Anyone have a PDF format of it?

Don't know of an on-line source for a .pdf, the manual is upwards of a 1,000 pages.

There are DVD versions, but IMO, they're a PITA to use.

Best bet is to find a hard copy.

There's one available through these guys for an '04, and the price is rght:
http://www.ebay.com/itm/2004-Ford-Crown-Victoria-factory-Shop-Service-Manual-Electrical-Wiring-diagram-/360536120471?pt=Motors_Manuals _Literature&vxp=mtr&hash=item53f1a09c97#ht_1680wt_ 764

FWIW, that's the source I used, and I paid more than that for mine.

fastblackmerc

03-10-2013, 09:17 AM

Don't know of an on-line source for a .pdf, the manual is upwards of a 1,000 pages.

There are DVD versions, but IMO, they're a PITA to use.

Best bet is to find a hard copy.

There's one available through these guys for an '04, and the price is rght:
http://www.ebay.com/itm/2004-Ford-Crown-Victoria-factory-Shop-Service-Manual-Electrical-Wiring-diagram-/360536120471?pt=Motors_Manuals _Literature&vxp=mtr&hash=item53f1a09c97#ht_1680wt_ 764

FWIW, that's the source I used, and I paid more than that for mine.

That is a good deal!

massacre

03-10-2013, 09:48 AM

The rear main seal is actually mounted to a plate that bolts to the back of the engine. This plate gets RTV as well. I bought the install tool, you can do it with the trans/flexplate removed as was mentioned. I know some people have not used the tool only to have it leak upon installation. Removing the plate and swapping in a new seal and reinstalling it is not difficult, it's the trans removal and related stuff that is the time consuming part.
BTW the torque spec for the seal plate is 100 lb/in (at least on a Teksid) and there is a torque sequence.

Midnight

03-10-2013, 03:31 PM

Room temperature vulcanizing?

massacre

03-10-2013, 04:34 PM

What do you mean?

martyo

03-10-2013, 05:00 PM

Room temperature vulcanizing?

Are you talking about sealing up the rear main seal silicone?

tbone

03-10-2013, 05:05 PM

I would put some stop leak in the oil before spending money on a new seal and labor.

massacre

03-10-2013, 05:34 PM

Does that stuff even work?

Marauderjack

03-11-2013, 04:00 AM

I have used and still use "Seal Lube" with good success.....no leaks and 246K miles on my Marauder!!:beer:

See here: http://newtintl.homestead.com/seallube.html

Good Luck!!

tbone

03-12-2013, 02:38 AM

I used this and it plugged up a leaky O-ring in my spark plug well that shorted out my spark plug and coil.

Also, 1/3 bottle plugged up a pinion seal leak in my differential.

$20 per bottle.

http://www.autoacdiscount.com/ac%20compressors/2010PartsPics/Oil%20Stop%20Leak.png (http://www.google.com/url?sa=i&source=images&cd=&cad=rja&docid=SsD8A5oqM_ceHM&tbnid=j_tV1_qw2IH5HM:&ved=0CAgQjRwwAA&url=http%3A%2F%2Fwww.ebay.com% 2Fitm%2FEngine-Oil-Stop-Leak-White-Shepherd-8oz-Permanently-Seals-Leaks-Free-Ship-%2F160711730696&ei=2vc-Ub8nkMz0BNXhgJgO&psig=AFQjCNGGmBg9Lkj-MGV_9zd6ho7dwfd4rA&ust=1363167578052766)

http://www.autoacdiscount.com/ac%20compressors/2010PartsPics/Oil%20Stop%20Leak%20Directions .jpg (http://www.google.com/url?sa=i&source=images&cd=&cad=rja&docid=SsD8A5oqM_ceHM&tbnid=HfYGvIYYa6L38M:&ved=0CAgQjRwwAA&url=http%3A%2F%2Fwww.ebay.com% 2Fitm%2FEngine-Oil-Stop-Leak-White-Shepherd-8oz-Permanently-Seals-Leaks-Free-Ship-%2F160711730696&ei=j_g-UZPCFobW9ATN0IHQDw&psig=AFQjCNE0SyCCLGuI4FBh0XQXU 9PZuTMq5A&ust=1363167759416491)

tbone

03-12-2013, 02:41 AM

Swells up rubber like this:

http://www.lakeserv.net/kaw/photos/misc_photos/swollen_o-ring.jpg (http://www.google.com/url?sa=i&source=images&cd=&cad=rja&docid=iiGc22zbjYX2pM&tbnid=y-6EFqFpalGFwM:&ved=0CAgQjRwwAA&url=http%3A%2F%2Fwww.bobistheo ilguy.com%2Fforums%2Fubbthread s.php%3Fubb%3Dshowflat%26Numbe r%3D1845351&ei=Jfg-UeauM4u49gSt9oCADQ&psig=AFQjCNG8PTzW6U3HBg2MAHW_B FJrS51-Yw&ust=1363167653879930)

tbone

03-12-2013, 02:49 AM

Worth a shot.

http://www.counterman.com/Article/88597/white_shepherd_rear_main_seale r_repairs_oil_leaks.aspx

http://ecx.images-amazon.com/images/I/41K43kY3SQL._SL500_SS500_.jpg (http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=Rwf0AdFvIfRCnM&tbnid=KwGvMZUxLQ49DM:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.amazon.co m%2FWhite-Shepherd-Rear-Main-Sealer%2Fdp%2FB002BG2OHI&ei=cfo-Ubf2LYSi8gSNjYDgAg&bvm=bv.43287494,d.eWU&psig=AFQjCNFmgyyBCbMg7PZwVL8PP FUcldPVWQ&ust=1363168222907892)

Midnight

09-01-2013, 07:55 PM

Update : Seal was replaced properly.

lji372

09-02-2013, 06:16 AM

Marauderjack

09-02-2013, 07:16 AM

It will not expand that much since the solution will be greatly diluted in your oil!!;)

What you see in the photo is after soaking the O-ring in 100% seal swelling solution!!:beer:

GreekGod

09-04-2013, 07:49 AM

My neighbor claims a cap full of brake fluid (before an oil change) will also swell leaking seals.

===============

fastblackmerc

09-04-2013, 09:20 AM

My neighbor claims a cap full of brake fluid (before an oil change) will also swell leaking seals.

===============

Yes it will. Used to put brake fluid on suspension rubbers to see if it fixed and squeaks.

I don't know if a capful would make any difference tho.......