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02-21-2024, 08:53 PM | #21 |
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Re: 46-48 front drum replacement, or??
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02-21-2024, 08:54 PM | #22 |
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Re: 46-48 front drum replacement, or??
That's exactly why. Gary recommended the P&J hubs as a substitute.
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02-21-2024, 09:00 PM | #23 |
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Re: 46-48 front drum replacement, or??
OK, a follow up.
Per Gary's recommendation, I sent photos and info to Boling Brothers. They got back to me today. They've heard of this happening with Lockheed brakes (fixed bottom anchor), which is what I have. The Bendix brake shoes'float' a bit and can move relative to the drum. The fixed anchor doesn't move. They suggested having someone arc the shoes to fit the drum better. I'm not sure I can find someone to do that. I wonder if it's feasible to remove some material from the bottom of the shoes instead. |
02-21-2024, 09:07 PM | #24 | |
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Re: 46-48 front drum replacement, or??
Quote:
I did space the drums out a little, it did improve. I'll check if the backing plates are bent, the wire 'tool' is a great idea. And I'll try to measure the hub/spindle distance. The original hub/drums fit fine. The only problem is that one drum is badly grooved. |
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02-22-2024, 02:15 AM | #25 |
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Re: 46-48 front drum replacement, or??
Seems odd the radius of the shoes would be the cause from your description. If so, I would think they would be tight just slipping the drums on. Never know.
Last edited by rich b; 02-22-2024 at 02:21 AM. |
02-22-2024, 01:35 PM | #26 | |
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Re: 46-48 front drum replacement, or??
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Quote:
Also, Boling Brothers rep mentioned the brake material may be thicker on the new shoes than the originals. If so, then removing enough to allow the drums to spin may work. |
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02-22-2024, 08:46 PM | #27 |
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Re: 46-48 front drum replacement, or??
You may be able to just taper the lower ends of the shoes if they turn out to be the problem and the radius is close. Here's a picture of an old shoe that has a taper. New shoes are sometimes a little big when combined with new drums. I have had to bevel a couple shoes in the past. Just knocked the edge down with a disc sander.
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02-22-2024, 09:22 PM | #28 |
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Re: 46-48 front drum replacement, or??
Maybe I'm missing something here but it appears that the original drums mount on the inside of the hub flange, whereas the Boling bros. drums are designed to mount on the outside of the hubs. So wouldn't the offset be different and there would be a large gap to the backing plate if mounted outside and rubbing if mounted inside? I have similar drums as noted in an earlier post about studs.
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02-22-2024, 10:00 PM | #29 | |
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Re: 46-48 front drum replacement, or??
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The only thing nice about being imperfect is the joy it brings to others.... "Silver rings, your butt! Them's washers!" "We shot our way out of that town for a dollar's worth of steel holes!" - from 'The Wild Bunch' - 1969 https://www.youtube.com/watch?v=7NReUd2_0u0 |
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02-23-2024, 05:20 PM | #30 | |
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Re: 46-48 front drum replacement, or??
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02-23-2024, 05:23 PM | #31 | |
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Re: 46-48 front drum replacement, or??
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02-23-2024, 06:28 PM | #32 |
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Re: 46-48 front drum replacement, or??
Good afternoon, everyone:
I followed up on what Boling Brothers told me and solved the problem. By inspecting and measuring the brake shoes, I found that the bottom edge of the 'large' shoe had scuff marks and was closer to the outer edge of the backing plate. A few minutes with a small random sander on that end of the shoe took it down enough to eliminate the binding. I was very careful and only removed enough to clear, there is plenty of material left. This is likely only an issue with shoes with a hard anchored bottom (Lockheed, rather than Bendix?) Thanks for your help, and feel free to share this with anyone else that it can help. |
02-23-2024, 08:05 PM | #33 | |
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Re: 46-48 front drum replacement, or??
Quote:
Glad to hear that you have worked through this anomaly with new Boling Brothers' brakes, which are usually bullet proof in both operation, as well as with installation. There is always a possibility of some freak circumstance popping-up as you've seen, but you persevered, found the issue and ended-up successful with your install. Many of us here on the 'Barn appreciate you hanging in there with the latest updates and your eventual success. I'm sure that many of us can predict that you will be most-satisfied with how well these brakes perform. Coop . |
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02-24-2024, 10:04 AM | #34 | |
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Re: 46-48 front drum replacement, or??
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02-28-2024, 03:14 PM | #35 |
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Re: 46-48 front drum replacement, or??
I found another possible reason for your fit issue. The top fixed anchor DOES move. You need to assemble all, and with the top anchor nut loosely snugged, step on the brake pedal to center the shoes in the drum. The anchor can adjust up and down a bit in the backing plate to allow the shoe to ride up or down depending on how worn the shoes are.
You might need to smack the anchor a bit with a rubber hammer to move it up or down. If you are contacting too much on the bottom of the shoe, try moving the anchor up a bit. |
02-28-2024, 07:40 PM | #36 | |
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Re: 46-48 front drum replacement, or??
Quote:
Man, why didn't I think about that? That was one reason that the Wilson Welding early Lincoln brakes were such a problem. They were built with that anchor NOT ADJUSTABLE. Doomed from the start. Coop . |
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02-28-2024, 11:56 PM | #37 | |
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Re: 46-48 front drum replacement, or??
Quote:
Anyway the OP said he had Lockheed brakes and since he mentioned "fixed"; I would think he has the '46-'48 type with the fixed pin and sliding cam in the shoe. |
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02-29-2024, 11:30 AM | #38 |
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Re: 46-48 front drum replacement, or??
Oh. I guess I glossed over that part. Thanks Rich.
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