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 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
 
Thanks
Here is a picture of the truck and my son
IMAG2101b.jpg
 
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.
 
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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 ?
 
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
 
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) ? ?
 
cw said:
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.
Click to expand...

These threads some times get confusing :confused: What ever happened to the original poster? :confused:
 
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.
 
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
 
Lowell Fast said:
Is that a Yes or No ?
Click to expand...

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.
 
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