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11-22-2018, 11:07 AM | #1 |
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Wobbly rear axle
Alright gang,
I was replacing my tires and when I had the left rear wheel off, I discovered the axle wobbles up/down left/right. It does not move in/out. Is there a bearing at the end of the axle housing? How far apart do I need to disassemble this thing? I really don’t want to rebuild the whole rear. A few wheel studs also fell out of the hub so I’ll need to replace those too. Thanks for any advice!! Gareth |
11-22-2018, 11:20 AM | #2 |
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Re: Wobbly rear axle
The bearing is in the hub but check the ends of the axle housing also for wear. With the drum/hub off it is normal for the axle to move.
The wheel studs are swedged in and need to be done by someone with the proper equipment (and knows what they're doing). Last edited by Y-Blockhead; 11-22-2018 at 11:29 AM. |
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11-22-2018, 11:31 AM | #3 |
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Re: Wobbly rear axle
Ok, that’s good to know! Then I just need to fix the studs.
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11-22-2018, 12:34 PM | #4 |
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Re: Wobbly rear axle
It’s a semi floating axle. Good design. The weight of the car is supported by the bearing on the hub. The axle is not loaded in bending, just torsional. Good luck
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11-22-2018, 12:37 PM | #5 |
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Re: Wobbly rear axle
With the drum on the axle there should be no movement tho.
As for the studs, as I said, someone with experience should do the job. After the new studs are swedged in the drum/hub assembly will need to be trued. |
11-22-2018, 12:44 PM | #6 |
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Re: Wobbly rear axle
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11-22-2018, 08:11 PM | #7 |
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Re: Wobbly rear axle
You could have a bent axle or a bent drum. It will take some close inspection, and if it's the axle, then the rear end needs to come apart.
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11-22-2018, 11:38 PM | #8 |
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Re: Wobbly rear axle
Thanks, I will inspect it closer tomorrow.
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11-22-2018, 11:41 PM | #9 |
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Re: Wobbly rear axle
Have you access to some club member that might look at it for you? Sounds to me that your drum may be worth getting another opinion on if several of the studs fell out. The holes may be so oversize now that it can not be swedged tightly enough to hold in normal use. It may be time for a new drum. I think you'd know right off if the axle is bent. If so it needs to be replaced which is a major task best done with two people, at least one with some skill in the realm of Model A repair and/or restoration. Good luck.
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11-23-2018, 09:36 AM | #10 |
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Re: Wobbly rear axle
I think there is a club in the Savannah area. I also don’t have a press big enough to swage the studs.
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11-23-2018, 10:51 AM | #11 |
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Re: Wobbly rear axle
What area of GA are you located? There are several clubs throughout the state.
TerryO |
11-23-2018, 11:06 AM | #12 |
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Re: Wobbly rear axle
Gareth - Just to add to the good advice you already have gotten, it sounds to me like the bearing which turns inside the brake drum is bad. If the bearing is so bad that the axle wobbles then the race on the end of the axle shaft is probably also bad, as well as the race on the inside the brake drum. Best to get a second opinion from someone who actually can look at your car in person though. Anyway, it sounds like you are going to have to take the rear axle off of the car to repair it and, so, you may as well completely rebuild the rear end and replace all bearings and seals. I just did that job and it is a fairly big job. I relied heavily on this very good piece by Tom Endy: http://www.santaanitaas.org/wp-conte...vised-2014.pdf Good luck.
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11-23-2018, 11:48 AM | #13 | |
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Re: Wobbly rear axle
Quote:
Thanks so much to everyone for the help! Truly appreciate this site. Gareth |
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11-23-2018, 04:09 PM | #14 |
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Re: Wobbly rear axle
Was your rear axel nut torque properly?
Needs to be at least 100 foot lbs. Did the rear brake drum just pull off by hand or did you need a puller? Before losing any sleep. I would put it back together, and properly torque the axel nut. If tight with no wobble, than now you just have to worry about the lug nut studs. I bought a Model A years ago that the owner said had a rear wheel wobble, drivers side. When I pulled the wheel and took the axel nut off. The rear drum came right off by hand. The axel key was shoot. Put on a new key and torqued nut to 100. Wobble was gone. |
11-23-2018, 04:17 PM | #15 |
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Re: Wobbly rear axle
If your hub & drum is off it will wobble as there's no outer bearing save for the one that's in the hub.
You only need to fix the studs. Although i don't recommend it, every car i've seen except one has a blob of weld holding a stud in.
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11-23-2018, 04:18 PM | #16 |
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Re: Wobbly rear axle
I don't swage the wheel studs in. It works fine and I don't need to pull the hub to get at the brakes.
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11-23-2018, 04:55 PM | #17 | |
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Re: Wobbly rear axle
Quote:
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11-23-2018, 05:39 PM | #18 |
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Re: Wobbly rear axle
I hope for yur sake that it hasn't damaged the taper on the axle or in the hub. The PO of owner of my cars drove with a loose hub and it is damaged. I use a shim, lots of torque and Loctite 243 on it now.
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11-23-2018, 05:54 PM | #19 |
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Re: Wobbly rear axle
Do you need loctite even with the cotter pin?
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11-23-2018, 06:13 PM | #20 |
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Re: Wobbly rear axle
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11-24-2018, 12:00 AM | #21 |
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Re: Wobbly rear axle
Every so often, grab your rear wheel and try to see if it rocks. Jacked up is better, but not necessarily needed. I do the same on the front, with my top hand through the wheel on the backing plate. That test is for checking wheel bearing vs loose kingpin.
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11-24-2018, 04:26 AM | #22 |
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Re: Wobbly rear axle
The Loctite is not to stop the nut coming undone. Loctite 243 is for taking up the slack in keyways and splines. It does a great job at it too but not so much for holding a nut. It seems there is a product in their range to do just about anything, all you have to do is make sure you choose the right one.
BTW, what you guys call cotter pins are elsewhere referred to as split pins. Cotter pins are like the two in the front axle that hold the king pin. Just another term that has been corrupted over a lengthy period till it comes to be accepted to mean something else. A bit like "ring gear". (That belongs on the flywheel.)
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11-24-2018, 09:04 AM | #23 |
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Re: Wobbly rear axle
Is the torque on the front hub also supposed to be 100 ft-lb?
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11-24-2018, 09:18 AM | #24 |
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Re: Wobbly rear axle
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11-24-2018, 09:36 AM | #25 |
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Re: Wobbly rear axle
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11-24-2018, 09:52 AM | #26 | |
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Re: Wobbly rear axle
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11-24-2018, 11:20 AM | #27 |
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Re: Wobbly rear axle
Ford parts book calls then cotter(s).
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11-24-2018, 03:22 PM | #28 |
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Re: Wobbly rear axle
Like I said, it has happened over a long time.
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11-24-2018, 04:23 PM | #29 |
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Re: Wobbly rear axle
Sounds like the front ones are tightened like modern day cars. I can handle that.
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11-24-2018, 10:46 PM | #30 |
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Re: Wobbly rear axle
Grease the bearings, snug the nut while spinning the wheel, then back off the nut and very lightly snug it no tighter than the weight of a 10" adjustable wrench hanging on the nut at the 3 o'clock position. Then insert the cotter pin. Better half a flat looser than tighter if the nut slot doesn't line up.
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12-01-2018, 11:40 PM | #31 |
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Re: Wobbly rear axle
I packed that rear bearing full of grease today and bolted it on. Put 100lb on the nut. No wobble at all! Guess it just needed tightened. I still need to get the lugs sorted but I’m glad the rest is all good. Thanks to everyone for the input!!
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