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Old 03-26-2011, 09:16 PM
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Ford 9 inch leak

Fellas my rear end is leaking all over the place. I am assuming it is the pinion seal, but the guy I bought the car from went through the rear end and put in a locker.. He said he did not replace the nut..

Is it possible that the leak is being caused by him not replacing the pinion nut?. I have heard about a crush sleeve, but I have not found a break down of a 9" to study so I don't have um figured out just yet.

Not sure what the crush sleeve does..

Any info would be great. Trying to learn. Thanks y'all!

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Old 03-26-2011, 09:19 PM
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Got to hand it to you Weirdbill, at 4 years old your pretty capable.

Not replacing the pinion nut will not cause a pinion seal leak. More than likely the pinion seal needs to be replaced. It's not a complicated job, but you must have a general idea of what your doing.

Oops, the crush sleeve preloads new pinion bearings.

Vince
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Old 03-26-2011, 09:37 PM
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Thanks Vince! I'm not really 4 years old, but I feel like I was born again since I joined Hotrodders.com. 4 or 5 years ago..

So I am barking up the wrong tree.. I like learning new stuff.. I watched a video on youtube on setting the pre load.. I might check for slop while I am down there.

As for the pinion seal.. I also watched a video on a GM rear pinion seal replacement. Looked super easy.. Is the 9" similar?
I really do appreciate the advice.
http://www.youtube.com/watch?v=HNkGdByzyjI

I wish I could have found a video like this for the 9"
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Old 03-26-2011, 09:55 PM
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Take off the big nut, slide the yoke off, pry out the seal, tap a new one in, put the yoke back on, tighten the nut...Drink Beer.

You might need a impact on the big nut, a 1/2 breaker is very likely.

The yoke will jut slide off but you might to pry on it with a screw driver or something.

Only tighten the nut to hold the yoke on. Do not tighten it enough to crush the adjuster. You'll need about 100 lbs/ft.

Don't drink crappy beer.
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Old 03-27-2011, 09:33 AM
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Quote:
Originally Posted by johnsongrass1
Take off the big nut, slide the yoke off, pry out the seal, tap a new one in, put the yoke back on, tighten the nut...Drink Beer.

You might need a impact on the big nut, a 1/2 breaker is very likely.

The yoke will jut slide off but you might to pry on it with a screw driver or something.

Only tighten the nut to hold the yoke on. Do not tighten it enough to crush the adjuster. You'll need about 100 lbs/ft.

Don't drink crappy beer.
Thanks Johnson. That sounds just like the GM rear seal in that video. I just wish I had a lift. I am excited about getting it done.
Crappy beer? I have never met a crappy beer!
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Old 03-27-2011, 12:06 PM
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Some 9" Ford setups don't use a crush sleeve, they use a spacer and pinion shims.
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Old 03-27-2011, 12:42 PM
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A tip on the pinion seal: pack the back side of the seal (side with spring) with heavy grease to prevent the seal spring from poping out as you hammer the seal into place.

Vince
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Old 03-27-2011, 05:51 PM
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I didin't know there was a spring.. I guess I will see when I get to it. Thanks for the tip.. I will let y'all know how it goes.

Looks like I have started loosing oil from the axle tube seals too. Might need some advice on pulling the axles while I am at it.

Is this a C clip rear end? I think with the C clip rear you just push the axle in and remove the C clip and thats is right?

Thanks y'all!
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Old 03-27-2011, 06:08 PM
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not a c clip you will need help changing the axle seals they are behind a pressed on bearing.

real easy to get the axles out tho just undo the 4 nuts under the wheel mounting flange and pull verry hard.

dont forget to lube the seal before replacing it as the dry yoke will burn the seal in a hurry
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Old 03-27-2011, 06:36 PM
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Quote:
Originally Posted by weirdbeard
I didin't know there was a spring.. I guess I will see when I get to it. Thanks for the tip.. I will let y'all know how it goes.

Looks like I have started loosing oil from the axle tube seals too. Might need some advice on pulling the axles while I am at it.

Is this a C clip rear end? I think with the C clip rear you just push the axle in and remove the C clip and thats is right?

Thanks y'all!
Vince is talking about the spring on the seal it's self it's on the inside of it, it goes around the seal flip the seal over before installing and you can see the spring that is there, and to pull the axles on a 9 inch ford remove the wheels and the drums and there will be four bolts that hold it in there will be a larger hole in the flange where you can place a socket through to get to the bolts, remove the four bolts then pull the axle you might have to use a slide hammer to yank them out if they don't want to come out easy, sometimes you can turn the drum around backwards and place it back on the wrong way and take two of the lug nuts and run them down alittle and yank on the drum to pull the axles out. And you may have to replace the bearings also and if so, you will have to either press the old bearing off and then press the new bearing back on. I have use a torch to cut the old bearing off just be very careful doing this not to damage the axle. Also look at the pic below of a pinion seal to see the spring Vince is talking about. Hope all this helps.



Cole
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Old 03-27-2011, 06:48 PM
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You might be able to see this exploaded view of the 9 inch.


Cole
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Old 03-27-2011, 06:54 PM
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thats weird in the pics it shows the axle seals on the inside of the housing before the bearing?
how would the axle bearings be lubed?

been awhile since i have been around a 9in but that cant be right
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Old 03-27-2011, 07:04 PM
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Quote:
Originally Posted by mud bros
thats weird in the pics it shows the axle seals on the inside of the housing before the bearing?
how would the axle bearings be lubed?

been awhile since i have been around a 9in but that cant be right
It will actually depend on which 9 inch rearend he has it can have a sealed bearing or it may not . JMO
The exploaded view above is of the sealed bearing style.

Cole
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Old 03-27-2011, 07:22 PM
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Quote:
Originally Posted by mud bros
thats weird in the pics it shows the axle seals on the inside of the housing before the bearing?
how would the axle bearings be lubed?

been awhile since i have been around a 9in but that cant be right

I was just scratching my head over that one too! Man I hope I don't have to pull the bearings to change the seals on mine.

Thanks very much Cole. I wish you could just come over and tell me what to do.

I guess I am just going to have to tear into it. I will post some pics if I run into trouble. I know I can count on you guys.
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Old 03-27-2011, 07:42 PM
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Yes, it will depend on what rearend you have as to the axle seals. Some are installed in the housing tubes for use with sealed bearings, some are installed on the axle before the bearing is pressed on for use with the tapered roller bearings.
If I remember correctly, the sealed bearing types were used on the early large bearing rears. The 9" Ford I have in my S10 Drag truck is the early large bearing type that uses the seal in the housing.
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