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-   -   Rebuild Model A Rear Axle (https://www.fordbarn.com/forum/showthread.php?t=77852)

cw 07-31-2012 12:38 PM

Re: Rebuild Model A Rear Axle
 

Well the rear axle, differential and torque tube are out of the truck.

While unbolting the cover on the u-joint, a whole bunch of oil started draining out.
Does this mean there is a leak behind the transmission?

J Franklin 07-31-2012 01:47 PM

Re: Rebuild Model A Rear Axle
 

That is Fords way of lubing the U-joint, It is the way it was done

Christoph 07-31-2012 02:29 PM

Re: Rebuild Model A Rear Axle
 

J F is right.

You should have seen me, when i opened my U-joint :mad:

Do go more into detail:
There is a grease-fitting in this U-Joint.
Grease itself would be "rotated away"....
Once its mixed with oil, it will "come back" where it belongs.
Dont fix this gearbox-leake too good. :D

BTW
I was shocked as my banjo allways was "overfilled".
I got to learn that the oil out of the gearbox went
all the way down there. :eek:
(To many gaskets gone for sure)

Have fun
Christoph

cw 07-31-2012 02:50 PM

Re: Rebuild Model A Rear Axle
 

Thanks
Here is a picture of the truck and my son http://www.nicali.com/pic/pup/IMAG2101b.jpg

Brentwood Bob 08-01-2012 01:21 AM

Re: Rebuild Model A Rear Axle
 

That truck's got fun written all over it. Bob

cw 08-01-2012 11:58 AM

Re: Rebuild Model A Rear Axle
 

When I took the torque tube off the drive shaft, parts came falling out. The roller bearing on the torque tube side of the pinion was in pieces, the pinion was not secured with thrust washers or the lock nuts. The differential and axle bearings look good.

Keeper79 08-01-2012 02:13 PM

Re: Rebuild Model A Rear Axle
 

That truck is sexy... I would certainly fix it up and pimp it..

Lowell Fast 08-22-2016 08:12 AM

Re: Rebuild Model A Rear Axle
 

1. After I remove my rear hubs, I notice the axles have a vertical up and down free play of a 1/4 of an inch. Is this normal ?.

2. There is no lateral freeplay.

3. There is a small amount of rear end lube leaking past the inner grease seals .

4. I Am replacing seals on the outter bearings but isn't it a major job to replace the inner seals ?

tbirdtbird 08-22-2016 10:03 AM

Re: Rebuild Model A Rear Axle
 

The 1/4" play you have noted is normal with the hubs off. It is the hubs that keep them centered.
If only a small amount of leakage I'd prolly leave it alone. Nothing on the brakes, correct? The entire rear end must be taken apart to change out the inner seals

Lowell Fast 08-23-2016 11:04 PM

Re: Rebuild Model A Rear Axle
 

Thanks, after further review, I now realize the extent of replacing the inner grease seals . I now plan on replacing the outer wheel bearing seals and see how much leakage I am dealing with .
Does anyone have experience with using John Deere Cornhead grease in the Differential (banjo) ? ?

updraught 08-24-2016 12:43 AM

Re: Rebuild Model A Rear Axle
 

Quote:

Originally Posted by Lowell Fast (Post 1343476)
Does anyone have experience with using John Deere Cornhead grease in the Differential (banjo) ? ?

Someone who drives at a maximum of 5 mph with half the bolts missing might be able to help you on that one.

Lowell Fast 08-24-2016 08:00 AM

Re: Rebuild Model A Rear Axle
 

Is that a Yes or No ?

zzlegend 08-24-2016 08:31 AM

Re: Rebuild Model A Rear Axle
 

Quote:

Originally Posted by cw (Post 471629)
When I took the torque tube off the drive shaft, parts came falling out. The roller bearing on the torque tube side of the pinion was in pieces, the pinion was not secured with thrust washers or the lock nuts. The differential and axle bearings look good.

These threads some times get confusing :confused: What ever happened to the original poster? :confused:

racingrufus 08-24-2016 09:08 AM

Re: Rebuild Model A Rear Axle
 

My rear had problems after I had rebuilt the engine.I took it apart and it had a 4.11 gear set in it which was makeing the engine turn to high of RPMs. I put in a 3.54 gear set with new bearings, seals,races and gaskets. I am pleased with the 3.54 gear set and I have plenty of cruising speed low speed power.

figment 08-24-2016 10:18 AM

Re: Rebuild Model A Rear Axle
 

I have heard of some owners using corn head grease in the ujoint but not in the rear end.

larrys40 08-24-2016 10:39 AM

Re: Rebuild Model A Rear Axle
 

sounds like you are into it.... and it is probably an unrestored axle. As Brent said to do a proper rebuild and "Restoration" there is much work involved.... Tom Endy's article is very good. Rear ends are one of my specialties and folks think they are always easy but it's not always the case. Having the proper tools and knowing what to do and look for is key. I have seen many parts ruined by improper methods and tools used.

sounds like you're into it so follow Tom's article and setup for preload.. replace all bearings and races, ensure your axles are good and suitable for re-use. If not secure replacements... otherwise you will be back into it pretty quick.

Larry Shepard

zzlegend 08-24-2016 11:56 AM

Re: Rebuild Model A Rear Axle
 

A four year old thread. Like I said, what happened to the original poster? Did he get it fixed?

updraught 08-24-2016 05:36 PM

Re: Rebuild Model A Rear Axle
 

Quote:

Originally Posted by Lowell Fast (Post 1343565)
Is that a Yes or No ?

It is OK in a steering box as the gears operate at low speed and the sludge has time to ooze back into place. Not so at high speed where a cavity in the sticky goo and made by the gears will stay that way. A thinner oil is needed. That's my take on it.

tbirdtbird 08-24-2016 06:52 PM

Re: Rebuild Model A Rear Axle
 

zz, clearly the thread was piggybacked onto by a new poster. Ignore the older stuff. The rest of us are.


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