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Author Topic:   9" rearend help
Dirt Full Roller

Total posts: 27
posted September 13, 2001 10:52 PM
Do any of you guys have trouble with the right side axle seal leaking. I have tried new seals and silicone but still leaks. any ideas?

Dirt Freak

Total posts: 243
posted September 15, 2001 10:13 PM UIN: 25419780
What type rear end do you have? I know on a ford 9inch there is an inner seal that gose in the axle tube so that the axle wont leak..

Dirt Maniac

Total posts: 103
posted September 15, 2001 10:15 PM
Yup, you better make sure the axle is not bent. If it's straight, make sure the housing is. You also need to make sure the wheel is mounting centered, your lug holes could be wallerd out.

Dirt Full Roller

Total posts: 29
posted September 24, 2001 10:28 PM
leaking or seeping ? Check the axle machined area that the seal rides on for abrasions.

You can also buy an inner axle seal that goes inside the rearend housing to limit lubricant to the right side. These even take car of axle shaft runout.

Speedway has them but they are about 55 bucks...I guess that is cheaper than burning up a center section for lack of lubrication.

Layne Direct Drive Transmissions

Dirt Full Roller

Total posts: 27
posted September 25, 2001 10:05 AM
Thanks for the reply, I have seen the axle seals for the inner portion of the housing, but they indicate they are not for stock housings. If I would use one what problem could they cause? thanks for the help.

Dirt Maniac

Total posts: 153
posted September 25, 2001 06:36 PM
Cheap Fix. Take a piece of roll bar padding and put in the axle tube an push your axle thru it. Keeps the grease from getting to the seal

Dirt Roller

Total posts: 15
posted September 25, 2001 09:02 PM
????? Roll bar padding ????? What happens when it comes apart??

Dirt Roller

Total posts: 24
posted September 26, 2001 10:10 AM
Wheels 13,
My rearend shop/sponsor once suggested using roll bar padding as an option to control rear gear oil "slosh" (this came up when I expressed concerns about the oil level being to low in the center section while cornering vs. the problems of overheating the rearend associated with maintaning too high of a static oil level). Bottom line is it shouldn't hurt (if it does break down a bit), but it probably wont solve your leaking problem.

I would go back to basics on this problem since most racers (including myself before I switched to a floater) are able to keep the oil in without inner seals and roll bar padding etc.
1) Check the axle for straightness
2) Check the end of your housing for damage
3) Check your seal/bearing for damage
4) ask someone with more experience to look at your "siliconing" method

If you feel the need to go the inner seal route, be aware that you will have to pack your bearing with grease (since you are cutting off it's lubrication). Check with Speedway or Stock Car Products (only $24.50 at SCP), one of them is bound to have a seal that will fit in your housing (it might be useful if you came up with an inside Dia. Dim. before you call.
Good Luck

Dirt Maniac

Total posts: 153
posted September 26, 2001 06:42 PM
1.If the padding comes apart it is soft enough that it won't hurt anything.

2.When you reduce the amout of slosh to the right rear, you also reduce the amount of forced leakage.

Yes you need to check all the above but the padding trick does work.


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