Am I doing something wrong

AA Ford Discussion Group relating to the repair and restoration of your AA Ford.
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JPP
Posts: 161
Joined: July 8th, 2011, 4:36 am
Body Type: 82-A
Model Year: 1929
Location: Townsend,MA

Am I doing something wrong

Post by JPP » March 19th, 2012, 5:34 pm

I replace my brakes in my rear, emergency and service. I turned the wedge all the way back, the springs are all new. I wired the rotors to remove rust. I can get one on, but the other one is too tight to fit. Any ideas. I have not turned down the rotor, may be out of round. What arfe the limits to how far to turn them down? Thanks in advance for your expert advice.

flatford39
Posts: 473
Joined: September 24th, 2009, 3:06 pm
Body Type: Express
Model Year: 1928
Location: NE Illinois

Re: Am I doing something wrong

Post by flatford39 » March 19th, 2012, 6:09 pm

Are you calling the brake drums rotors??? Original drums are steel and not cast iron. You don't cut them. I think you might have an assembly problem. Did you re-arch the shoes to match your drums???

JPP
Posts: 161
Joined: July 8th, 2011, 4:36 am
Body Type: 82-A
Model Year: 1929
Location: Townsend,MA

Re: Am I doing something wrong

Post by JPP » March 20th, 2012, 5:12 am

Hi, Yes they are drums and very heavy ones at that. Thanks for the advice on turning them, or better yet not to. So that leaves reshaping, How is that done? Where can I read about it. Thanks

Shorthaul
Posts: 344
Joined: November 15th, 2008, 8:18 am
Body Type: 186 stake
Model Year: 1931
Location: Hawthorne California

Re: Am I doing something wrong

Post by Shorthaul » March 20th, 2012, 8:06 am

Put the shoe's in the drum and see how they match up

flatford39
Posts: 473
Joined: September 24th, 2009, 3:06 pm
Body Type: Express
Model Year: 1928
Location: NE Illinois

Re: Am I doing something wrong

Post by flatford39 » March 20th, 2012, 2:16 pm

JPP wrote:Hi, Yes they are drums and very heavy ones at that. Thanks for the advice on turning them, or better yet not to. So that leaves reshaping, How is that done? Where can I read about it. Thanks
You reshape the shoes to match your drums. There are re- arching machines that do it but they are pretty hard to come by in useable shape. Old auto repair shops that did break jobs all had them back in the day but in today's disposable world it's hard to find anyone still doing it. I hope others chime in here as to what there doing.

John - NNY
Posts: 119
Joined: October 1st, 2007, 6:38 pm
Model Year: 1930

Re: Am I doing something wrong

Post by John - NNY » March 20th, 2012, 3:22 pm

Take one of your brake shoes off and put it inside your drum. See where the brake lining hits the drum. Contour the lining to match the arc of the drum. Hopefully, you have non-asbestos linings. A belt sander could do the trick.
John
NNY

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TomH
Posts: 181
Joined: September 16th, 2009, 2:11 pm
Body Type: pickup
Model Year: 1928
Location: Eastern PA

Re: Am I doing something wrong

Post by TomH » March 20th, 2012, 4:32 pm

I used a belt sander and wore a respirator.
You might want to use a framing square off the end of the axle to make sure the lining are square with the axle.
Need rear fenders and running boards for 1932 131" single wheel Express Body

JPP
Posts: 161
Joined: July 8th, 2011, 4:36 am
Body Type: 82-A
Model Year: 1929
Location: Townsend,MA

Re: Am I doing something wrong

Post by JPP » March 20th, 2012, 8:23 pm

Guys, Lots of great techniques to solve my problem. It never occurred to me that the brakes and the drums would be different. I have an old timer mechanic local, i want to ask him if he ever reshaped brakes, he will get a kick out of it I am sure. Thanks again for the sage and prudent advice.

Bladehorse
Posts: 112
Joined: November 9th, 2009, 9:22 pm
Body Type: 185-A
Model Year: 1930

Re: Am I doing something wrong

Post by Bladehorse » March 22nd, 2012, 9:20 pm

as far as arcing goes, I have a brake shoe arcer, if anyone needs to have it done. I need to make a dustbag trap for it however :mrgreen:

JPP
Posts: 161
Joined: July 8th, 2011, 4:36 am
Body Type: 82-A
Model Year: 1929
Location: Townsend,MA

Re: Am I doing something wrong

Post by JPP » March 23rd, 2012, 5:35 am

hey, can you take a picture of your machine and post it. would be great to see one. thanks

Bob C
Posts: 1338
Joined: April 24th, 2003, 11:50 am
Body Type: Mail truck, Stake tr
Model Year: 1931
Location: SO CAL

Re: Am I doing something wrong

Post by Bob C » March 23rd, 2012, 8:56 am

Here's two different ones, these are both Barrett brand
Attachments
DrumDr.JPG
DrumDr.JPG (97.65 KiB) Viewed 3596 times
IMG_0180.JPG
IMG_0180.JPG (176.51 KiB) Viewed 3596 times

JPP
Posts: 161
Joined: July 8th, 2011, 4:36 am
Body Type: 82-A
Model Year: 1929
Location: Townsend,MA

Re: Am I doing something wrong

Post by JPP » March 23rd, 2012, 1:43 pm

Bob, Thanks that looks great. Wish you were down the street, i could bring it to the dokter for service.

JPP
Posts: 161
Joined: July 8th, 2011, 4:36 am
Body Type: 82-A
Model Year: 1929
Location: Townsend,MA

Re: Am I doing something wrong

Post by JPP » March 25th, 2012, 6:16 pm

Guys, to complete this tread, sanded down the rear pads with my belt sander, on the high spots, drum slide in no problem, adjusted wedges and good to go. Thanks again for the advice.

Bladehorse
Posts: 112
Joined: November 9th, 2009, 9:22 pm
Body Type: 185-A
Model Year: 1930

Re: Am I doing something wrong

Post by Bladehorse » March 26th, 2012, 9:47 am

I had the same problem when I had the e brake relined. THey do not make the lining in the correct thickness, so I couldnt get the drum on. I ended up taking the bands to a local shop who had a giant belt sander, and he sanded them down for me. I would recommend NOT using whats called a 'hard weve' kevlar lining, but the 'soft' weave kevlar. The hard weve litterally ripped in 1/2 the first time I tried the brake to see if the pull was equal. The brake supplier, told me to use the soft weve over the hard, and said it is more akin to brake bands that are self energizing, and less likely to grab, and tear.
Hopes it helps someone! I still need to get the axle together enough to bother trying again, tho I still have the dirty 'A' word brake bands and shoes from another truck!

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