Bent Axle
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From: Vienna, VA
Bent Axle
Ok, so after if fixed the whole bearing issue, and went through the differential as y'all suggested. I have found that the axle shaft on the left side is bent. Any ideas as to what years will swap out with mine and where to start looking for a new one?
Jay
1963 F-100 3sp/292/2wd Ford 9" diff.
Jay
1963 F-100 3sp/292/2wd Ford 9" diff.
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Joined: Apr 2002
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From: Coal country
Number Dummy will correct me if necessary, but I think I have this one right:
All 9" axle shafts from '58 - '67 pickups, either side will fit.
'68 - '72 will fit, but only if you change out the entire rear brakes as well.
'73 - '79 are too long.
But first, I would double check the axle shaft to see if it is truly bent. I can easily see where a bent housing would be more likely, but make it look like the axle shaft is bent. I just do not see an axle shaft bending by itself without collateral damage - unless it is bent at the bearing or stud plate?
Even then, I would think the housing would bend.
All 9" axle shafts from '58 - '67 pickups, either side will fit.
'68 - '72 will fit, but only if you change out the entire rear brakes as well.
'73 - '79 are too long.
But first, I would double check the axle shaft to see if it is truly bent. I can easily see where a bent housing would be more likely, but make it look like the axle shaft is bent. I just do not see an axle shaft bending by itself without collateral damage - unless it is bent at the bearing or stud plate?
Even then, I would think the housing would bend.
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From: Vienna, VA
I was thinking the same when I changed out the bearings. I only noticed because I had the truck lifted and running with the new bearings to make sure everything was normal and found what i thought to be the brakes dragging on that side. So I tore it apart, rebuilt the brakes, put it together and had the same issue. tore it appart again, and rotated the studplate while holding a ruller to the brake housing. noticed about a 1/16th of an inch wabble in the stud plate.
when I went in to replace the bearings, that side was actually missing six bearings out of the unit. I found them in the axle housing, however, when I was given the truck the PO had put about 50+ miles on it at high speeds and never tried to find the hard knock he heard in the rear. I am wondering if it was from this a continuous lift and drop in the bearings.
I will start there and see what i can find. Thanks Banjo!
when I went in to replace the bearings, that side was actually missing six bearings out of the unit. I found them in the axle housing, however, when I was given the truck the PO had put about 50+ miles on it at high speeds and never tried to find the hard knock he heard in the rear. I am wondering if it was from this a continuous lift and drop in the bearings.
I will start there and see what i can find. Thanks Banjo!
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From: Coal country
The way to confirm it is to pull the axle shaft (again!) and count the splines.
However.
If original, it is most likely you have 28 spline axles, not 31s.
The easy way to tell is to note the splined end of the axles.
If the splined end tapers down about 3" or so from the end, then it is 28 spline.
If the axle shaft has the same diameter all the way through, it is a 31 spine axle.
However.
If original, it is most likely you have 28 spline axles, not 31s.
The easy way to tell is to note the splined end of the axles.
If the splined end tapers down about 3" or so from the end, then it is 28 spline.
If the axle shaft has the same diameter all the way through, it is a 31 spine axle.
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I could be wrong, but it will need to be a left axle wont it? On my 61 I remember the pumpkin sits off to one side slightly, so one axle would be longer than the other, the way I look at it. Not sure, but I think it sat off to the right, so the left axle is longer. I never actually put a tape to it, but I remember it sure did look that way with the bed off, and I had some people more in the Ford know than I tell me that Ford did build 9"ers that were offset like that.
Ford Parts Specialist
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From: Simi Valley, CA
Fits: 1957/67 F100.
These F100's were also available (as an option) with Dana 44 & Dana 60.2 rear axles...both of which have an inspection cover on them. The 9" does not.
1968/72 F100's: The axle shafts are different-slightly longer (C8TZ4234A 28 spline-R/L is the same) because the rear brakes are different.
1968 and later F100 rear brake shoes are 11 x 2 1/4" wide. 1957/67 F100: 11" x 1 3/4."
Ford also offered a H/D 9" for 1968/72 F100's. These axle shafts have 31 splines.
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From: Vienna, VA
to be honest Bill, I did not check the wheel. I passed on that by checking how freely the wheel rotated with the rear of the truck jacked up. Then removed the wheel and checked the hub with the brake drum attached. After rebuilding the brakes, i checked the stud plate with a ruler against the brake housing. found that there is a big difference when the plate is rotated. definately bent either at the stud plate or at the axle bearing.
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