The Ford Barn

411Ton · 05-25-2025, 08:42 AM

good morning folks. My drum is cracked and I'm wondering if I can knock the 5 studs out and replace just the drum section? If so, I can't figure out from the parts catalogue what the proper name is. Appreciate any tips!

Bored&Stroked · 05-25-2025, 08:58 AM

The challenge is finding a good drum . . . I'm not aware of them being reproduced? Anybody have any ideas on this?

rich b · 05-25-2025, 09:10 AM

Doubt that any new drums can be found as Ford only provided complete assemblies.

Apparently there was some aftermarket drums made as we have run across them a couple times; pretty scarce tho.

Best bet would be to find another usable hub/drum assembly.

If not, look for a matching drum on a different assembly and salvage the good drum.

A two part hub/drum assembly can be separated.

The studs can not be knocked out; they are swedged. The swedge need to be cut out before removing the studs.

Next problem may be locating correct studs, followed by finding someone that can swedge the assembly.

We have done that with two piece car hub/drum assemblies.

Newc · 05-25-2025, 10:18 AM

Am I looking at a 3/4ton drum? Chucks trucks -best chance. Some circle trackers used these before the quick change rear diffs. Newc

Bob C · 05-25-2025, 10:44 AM

Quote:

Originally Posted by Newc

Am I looking at a 3/4ton drum? Newc

Going by his user name it's a 1941 1 ton.

GB SISSON · 05-25-2025, 11:04 AM

Sponsored Links (Register now to hide all advertisements)

To the best of my knowledge a wide five assembly identifies the truck as a 3/4 ton. Not a lot of them were built, so I guess we must hope that your hub and drum interchange with the 1/2 ton. As seen here, even the more common 1/2 ton part is hard to find in useable shape. First off, does your truck have a 122" wheelbase? The 122" wb was shared by the 3/4 ton and the tonner, but the tonner has 17" multi-piece wheels and a 5 on 6 7/8" lug pattern, the rear is a 'full floating axle'. I will have to bust out my copy of James Wagner's 'Ford Trucks Since 1905'. There is a lot of good text and factory photos there. Can you get a side view showing the rear axle and hub? Edit: Holy Cow! I see now in your first photo that you do indeed have a full floater on the rear! Very scarce item. Might be a good time to switch out to a later 8 lug full floater or maybe better yet, a 9" rear. I bet you could find 5 on 5 1/2" front hub/drum assemblies that would slip right onto your front spindles.

411Ton · 05-25-2025, 01:44 PM

yes, 3/4. I didn't realize I had a 3/4 until the gurus here walked me through things

petehoovie · 05-25-2025, 01:35 PM

Quote:

Originally Posted by 411Ton

good morning folks. My drum is cracked and I'm wondering if I can knock the 5 studs out and replace just the drum section? If so, I can't figure out from the parts catalogue what the proper name is. Appreciate any tips!

Charlie Stephens · 05-25-2025, 01:43 PM

Those studs need to be pressed out by someone that KNOWS what they are doing, otherwise you risk damaging the hub. The same person will probably press in the new studs. Don't do anything until you find the new drum as it will probably come with a hub already installed.

Charlie Stephens

L-head · 05-25-2025, 02:36 PM

If you can locate a drum, used or NOSR, I think finding the studs to attach the hub to the drum, will be a problem. I think the part number will be 91D-xxxx. The Ford "Green Book" will provide you the correct number. They are extremely hard to find. I would try and see if a passenger car drum is the same. Good luck, the studs will still have to be properly installed.

GB SISSON · 05-25-2025, 04:36 PM

Wagner's book says that the 3/4 ton utilized the commercial car's 12" brakes so I bet fronts are a dead match with the half ton. The rear with it's full floaing axle hub is gonna be the tough part. It could be that the center hole in the drum is the same, front and rear and 1/2 ton or 3/4 ton. If that's the case the drum shouldn't be too very hard to find. As others have stated, it will take all thr right stuff to make the swap.

1952henry · 05-25-2025, 11:08 PM

Im sure Chuck of ChucksTrucks could help with studs, if need arises.

deuce lover · 05-25-2025, 11:24 PM

Try Fred at Southside Obsolete?

38 coupe · 05-26-2025, 12:30 AM

Is your cracked drum a front drum or a rear drum?
My understanding on front drums matches GB's, the fronts are the same as 37-39 passenger car and 1/2 ton.
I have a complete rear axle with drums from a 41 3/4 ton, including wide five rear drums. I have not taken the drums off and inspected them. I will not have time to do anything with that rear axle for a month or so, but it isn't going anywhere.

411Ton · 07-15-2025, 06:35 AM

this is the rear drum from a 3/4 ton 41. Might you have one?

411Ton · 10-06-2025, 09:41 AM

in prep for Hershey this week, I retook some photos of the rear wide 5 drum/hub assy. I didn't realize that the two sides were different. Does anyone know which one is original? On the smooth one (without the ribs) I took a pic of stampings. My AI research seems to indicate that the stamped one is a replacement, although I'm not certain of this. I also saw a post in this string that said that the ribs were on passenger cars? The front and rear are both 12" diameter with 2" face.

petehoovie · 10-06-2025, 10:33 AM

Quote:

Originally Posted by 411Ton

in prep for Hershey this week, I retook some photos of the rear wide 5 drum/hub assy. I didn't realize that the two sides were different. Does anyone know which one is original? On the smooth one (without the ribs) I took a pic of stampings. My AI research seems to indicate that the stamped one is a replacement, although I'm not certain of this. I also saw a post in this string that said that the ribs were on passenger cars? The front and rear are both 12" diameter with 2" face.

411Ton · 10-06-2025, 12:26 PM

petehoovie, did you have a reply? if so, I can only see the reprint of my comments/photos

411Ton · 10-06-2025, 10:41 AM

@38Coupe, you mentioned you have a rear axle?

Kurt in NJ · 05-27-2025, 12:04 AM

The drums with the 3 deep ribs typically were only on 36 passenger cars,the later drums on passenger cars were nearly smooth.

05-25-2025, 08:58 AM	#2
Bored&Stroked Senior Member Join Date: Jan 2011 Location: Central Ohio Posts: 5,906	Re: 16" Wide 5 drum replacement The challenge is finding a good drum . . . I'm not aware of them being reproduced? Anybody have any ideas on this?

05-25-2025, 09:10 AM	#3
rich b Senior Member Join Date: May 2010 Location: Minnesota Posts: 2,156	Re: 16" Wide 5 drum replacement Doubt that any new drums can be found as Ford only provided complete assemblies. Apparently there was some aftermarket drums made as we have run across them a couple times; pretty scarce tho. Best bet would be to find another usable hub/drum assembly. If not, look for a matching drum on a different assembly and salvage the good drum. A two part hub/drum assembly can be separated. The studs can not be knocked out; they are swedged. The swedge need to be cut out before removing the studs. Next problem may be locating correct studs, followed by finding someone that can swedge the assembly. We have done that with two piece car hub/drum assemblies.

05-25-2025, 10:18 AM	#4
Newc Senior Member Join Date: May 2010 Posts: 3,052	Re: 16" Wide 5 drum replacement Am I looking at a 3/4ton drum? Chucks trucks -best chance. Some circle trackers used these before the quick change rear diffs. Newc Last edited by Newc; 05-25-2025 at 04:51 PM.

05-25-2025, 11:04 AM	#6
GB SISSON Senior Member Join Date: Jan 2014 Location: Orcas Island Washington Posts: 6,202	Re: 16" Wide 5 drum replacement Sponsored Links (Register now to hide all advertisements) To the best of my knowledge a wide five assembly identifies the truck as a 3/4 ton. Not a lot of them were built, so I guess we must hope that your hub and drum interchange with the 1/2 ton. As seen here, even the more common 1/2 ton part is hard to find in useable shape. First off, does your truck have a 122" wheelbase? The 122" wb was shared by the 3/4 ton and the tonner, but the tonner has 17" multi-piece wheels and a 5 on 6 7/8" lug pattern, the rear is a 'full floating axle'. I will have to bust out my copy of James Wagner's 'Ford Trucks Since 1905'. There is a lot of good text and factory photos there. Can you get a side view showing the rear axle and hub? Edit: Holy Cow! I see now in your first photo that you do indeed have a full floater on the rear! Very scarce item. Might be a good time to switch out to a later 8 lug full floater or maybe better yet, a 9" rear. I bet you could find 5 on 5 1/2" front hub/drum assemblies that would slip right onto your front spindles. __________________ Owner/Operator of 'Jailbar Ranch' on the side of Mt. Pickett. Current stable consists of 1946 1/2 ton pickup turned woodie wagon with FH V8, 1946 Tonner Pickup with 226 H six, 1979 Toyota landcruiser wagon, now wearing 1947 Ford Jailbar sheet metal. 'Rusty ol' floorboards, hot on their feet' (Alan Jackson) Last edited by GB SISSON; 05-25-2025 at 11:30 AM.

05-25-2025, 01:44 PM	#7
411Ton Senior Member Join Date: Nov 2024 Location: Naples, FL 34117 Posts: 99	Re: 16" Wide 5 drum replacement yes, 3/4. I didn't realize I had a 3/4 until the gurus here walked me through things

05-25-2025, 01:43 PM	#9
Charlie Stephens Senior Member Join Date: May 2010 Location: Southern California Posts: 7,320	Re: 16" Wide 5 drum replacement Those studs need to be pressed out by someone that KNOWS what they are doing, otherwise you risk damaging the hub. The same person will probably press in the new studs. Don't do anything until you find the new drum as it will probably come with a hub already installed. Charlie Stephens

05-25-2025, 02:36 PM	#10
L-head Senior Member Join Date: May 2010 Posts: 195	Re: 16" Wide 5 drum replacement If you can locate a drum, used or NOSR, I think finding the studs to attach the hub to the drum, will be a problem. I think the part number will be 91D-xxxx. The Ford "Green Book" will provide you the correct number. They are extremely hard to find. I would try and see if a passenger car drum is the same. Good luck, the studs will still have to be properly installed.

05-25-2025, 04:36 PM	#11
GB SISSON Senior Member Join Date: Jan 2014 Location: Orcas Island Washington Posts: 6,202	Re: 16" Wide 5 drum replacement Wagner's book says that the 3/4 ton utilized the commercial car's 12" brakes so I bet fronts are a dead match with the half ton. The rear with it's full floaing axle hub is gonna be the tough part. It could be that the center hole in the drum is the same, front and rear and 1/2 ton or 3/4 ton. If that's the case the drum shouldn't be too very hard to find. As others have stated, it will take all thr right stuff to make the swap. __________________ Owner/Operator of 'Jailbar Ranch' on the side of Mt. Pickett. Current stable consists of 1946 1/2 ton pickup turned woodie wagon with FH V8, 1946 Tonner Pickup with 226 H six, 1979 Toyota landcruiser wagon, now wearing 1947 Ford Jailbar sheet metal. 'Rusty ol' floorboards, hot on their feet' (Alan Jackson)

05-25-2025, 11:08 PM	#12
1952henry Senior Member Join Date: May 2010 Location: North Dakota Posts: 1,840	Re: 16" Wide 5 drum replacement Im sure Chuck of ChucksTrucks could help with studs, if need arises. __________________ I dig coal, which provides motivation for EVs.

05-25-2025, 11:24 PM	#13
deuce lover Senior Member Join Date: May 2010 Location: Rockwall TX Posts: 6,018	Re: 16" Wide 5 drum replacement Try Fred at Southside Obsolete?

05-26-2025, 12:30 AM	#14
38 coupe Senior Member Join Date: May 2010 Location: South Texas Posts: 2,135	Re: 16" Wide 5 drum replacement Is your cracked drum a front drum or a rear drum? My understanding on front drums matches GB's, the fronts are the same as 37-39 passenger car and 1/2 ton. I have a complete rear axle with drums from a 41 3/4 ton, including wide five rear drums. I have not taken the drums off and inspected them. I will not have time to do anything with that rear axle for a month or so, but it isn't going anywhere.

07-15-2025, 06:35 AM	#15
411Ton Senior Member Join Date: Nov 2024 Location: Naples, FL 34117 Posts: 99	Re: 16" Wide 5 drum replacement this is the rear drum from a 3/4 ton 41. Might you have one?

10-06-2025, 12:26 PM	#18
411Ton Senior Member Join Date: Nov 2024 Location: Naples, FL 34117 Posts: 99	Re: 16" Wide 5 drum replacement petehoovie, did you have a reply? if so, I can only see the reprint of my comments/photos

10-06-2025, 10:41 AM	#19
411Ton Senior Member Join Date: Nov 2024 Location: Naples, FL 34117 Posts: 99	Re: 16" Wide 5 drum replacement @38Coupe, you mentioned you have a rear axle?

05-27-2025, 12:04 AM	#20
Kurt in NJ Senior Member Join Date: May 2010 Location: on the Littlefield Posts: 6,672	Re: 16" Wide 5 drum replacement The drums with the 3 deep ribs typically were only on 36 passenger cars,the later drums on passenger cars were nearly smooth.