rear main seal Question????
Thread Starter
Launching!
Joined: Oct 2012
Posts: 219
Likes: 0
From: near Beech Bend race way
rear main seal Question???? is it necessary to use an J-41479 special tool to install my rear main seal or can i just install it with a little extra finesse??
which is the better seal ?
summit has them but not sure bout quality?
thanks
which is the better seal ?
summit has them but not sure bout quality?
thanks
Thread Starter
Launching!
Joined: Oct 2012
Posts: 219
Likes: 0
From: near Beech Bend race way
Make sure you have the proper side of the seal outside.
The seal has very small letters on the rubber, itself (this side out), or somesuch. You can only see the letters under a light from a specific angle.
When installing the seal, make sure that it is installed all the way in-not just flush with the outside edge of the rear cover.
The seal does not require lube. I cleaned off the crank hub with citri-solv, to clear any worn rubber from the old seal. I also burnished the wear area with light emory cloth.
Install/hang the rear cover with seal, and let it center itself.
As I installed bolts in rear cover, I placed a finger under the cover, to support it. Finger-tighten bolts to hold cover in place.
Tighten bolts in steps, until you acquire proper torque.
I tried using the supplied, plastic tool, to center the cover, but found the tool was not helpful.
The oil pan is installed last.
One year, & 3500 miles later, no leaks.
The seal has very small letters on the rubber, itself (this side out), or somesuch. You can only see the letters under a light from a specific angle.
When installing the seal, make sure that it is installed all the way in-not just flush with the outside edge of the rear cover.
The seal does not require lube. I cleaned off the crank hub with citri-solv, to clear any worn rubber from the old seal. I also burnished the wear area with light emory cloth.
Install/hang the rear cover with seal, and let it center itself.
As I installed bolts in rear cover, I placed a finger under the cover, to support it. Finger-tighten bolts to hold cover in place.
Tighten bolts in steps, until you acquire proper torque.
I tried using the supplied, plastic tool, to center the cover, but found the tool was not helpful.
The oil pan is installed last.
One year, & 3500 miles later, no leaks.
Did mine a couple thousand miles ago, pull it out with a small flap tip screwdriver on the cut outs on the block. You can work it out outside of that grove just dont score the surface. Clean the area, grab a 2x4 or 2x6 (short in length) drill a hole out bigger than the shaft insert area so the board goes around it and sits flush on the seal. Hammer in softly with rubber mallet then remove board and lightly tap making sure it is square all the way around and one side is not sticking out further. Or just tap it with a blunt object ensuring your going in flush all the way around the seal, it's not hard.
How I did it no leaks, no problems. I did borrow someone's seal puller tool but gave that junk back to them. Small flathead screwdriver worked better.
As far as the seal brand I believe I just picked mine up from local autozone because I had the tranny out and wanted to go ahead and replace mine.
How I did it no leaks, no problems. I did borrow someone's seal puller tool but gave that junk back to them. Small flathead screwdriver worked better.
As far as the seal brand I believe I just picked mine up from local autozone because I had the tranny out and wanted to go ahead and replace mine.
During a forged 347 build for a guy, I borrowed the tool from the local GM garage that my buddy worked at, and wound up not even using it. 2 years later and no issues. Sometimes these "special tools" are a gimmick.
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I installed a new seal in my 00' Hawk when I did my clutch last month. I used the plastic circle thing that came with the seal. Lube the seal and the crank. Tapped around on the seal with a rubber mallet and went right in. Easy peasy.
Lube only the outside of the seal, then it almost pushes in with your fingers. The just lightly tap it in all the way with a punch & hammer.
Don't use the plastic sleeve, and the sealing lip must not be oiled.
Russ Kemp
Don't use the plastic sleeve, and the sealing lip must not be oiled.
Russ Kemp
