Go Back   The Ford Barn > General Discussion > Model A (1928-31)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 06-24-2017, 01:06 PM   #1
Vin-tin
Senior Member
 
Vin-tin's Avatar
 
Join Date: Aug 2012
Location: Eastern Pa.
Posts: 543
Default Another front drum / brake problem

So i'm down to my last corner of the new brake / drum installation.
I have a problem with the one front brake drum rubbing as I spin the hub. I discovered it's rubbing on the outer edge of the shoe(s). I sanded the lining flush with the edge of the metal bands and it's still rubbing.
I can eliminate the rub completely if I back off on the spindle nut, but then the hub has in and out play.
Would it be advisable to shim-out the inner wheel bearing race?
and if yes, do they make something specifically for that?

I thought it would be best to shim the race, rather than the bearing.

How else would you fix this?
__________________
1929 Coupe
1930 Coupe
1935 Ford 5 window coupe
Vin-tin is offline   Reply With Quote
Old 06-24-2017, 01:17 PM   #2
Ed H.
Senior Member
 
Join Date: Jun 2013
Location: Milton NH
Posts: 148
Default Re: Another front drum / brake problem

I would grind down the metal part of the shoe if that is what is hitting on the inner drum.
Make sure ( I am sure you checked) the shoe is firmly planted against the backing plate.

Could be some crud holding the shoe away from the backing plate.
__________________
If you see a bomb technician running, do everything in your power to keep up with him.

United States Navy
Ed H. is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 06-24-2017, 01:28 PM   #3
Vin-tin
Senior Member
 
Vin-tin's Avatar
 
Join Date: Aug 2012
Location: Eastern Pa.
Posts: 543
Default Re: Another front drum / brake problem

Quote:
Originally Posted by Ed H. View Post
I would grind down the metal part of the shoe if that is what is hitting on the inner drum.
Make sure ( I am sure you checked) the shoe is firmly planted against the backing plate.

Could be some crud holding the shoe away from the backing plate.
No crud. Everything was blasted and painted.
I can push the shoes towards the backing plate, but the shoe springs pull it away again slightly. I figured that's normal as you don't want the shoes contacting the backing plate...?
__________________
1929 Coupe
1930 Coupe
1935 Ford 5 window coupe
Vin-tin is offline   Reply With Quote
Old 06-24-2017, 04:48 PM   #4
180 a
Senior Member
 
Join Date: Oct 2012
Location: Grawn , Michigan
Posts: 104
Default Re: Another front drum / brake problem

check to see if the drum has the radius relieved so the shoe does not hit that radius
180 a is offline   Reply With Quote
Old 06-24-2017, 06:50 PM   #5
Vin-tin
Senior Member
 
Vin-tin's Avatar
 
Join Date: Aug 2012
Location: Eastern Pa.
Posts: 543
Default Re: Another front drum / brake problem

Quote:
Originally Posted by 180 a View Post
check to see if the drum has the radius relieved so the shoe does not hit that radius
It does look as though they could have machined a little deeper to remove more of the radius.
I shimmed-out the bearing race about .010-.015. Now it only rubs ever so slightly. I can live with that. It will probably get better as it wears-in when I get the chassis on the road (some day )
__________________
1929 Coupe
1930 Coupe
1935 Ford 5 window coupe
Vin-tin is offline   Reply With Quote
Old 06-24-2017, 06:58 PM   #6
Synchro909
Senior Member
 
Synchro909's Avatar
 
Join Date: Jun 2014
Location: Melbourne, Australia
Posts: 7,471
Default Re: Another front drum / brake problem

Sponsored Links (Register now to hide all advertisements)
My suggestion:
Grab yourself a spray can of paint and give the inside of the drum a squirt. Refit everything and give the drum a turn. When you dismantle and inspect, you'll easily see where it is rubbing. Relieve it and retest. Repeat as many times as is needed to get the drum turning freely. This way, you'll only be removing the minimum amount of material.
__________________
I'm part of the only ever generation with an analogue childhood and a digital adulthood.
Synchro909 is offline   Reply With Quote
Old 06-25-2017, 08:10 AM   #7
Tom Wesenberg
Senior Member
 
Tom Wesenberg's Avatar
 
Join Date: May 2010
Location: Mpls, MN
Posts: 27,582
Default Re: Another front drum / brake problem

The shoes should rest against the backing plate. If the springs pull them away, then something is wrong. I also put a touch of grease on the spots where the shoes rest against the backing plates.
Tom Wesenberg is offline   Reply With Quote
Old 06-25-2017, 09:21 AM   #8
john in illinois
Senior Member
 
john in illinois's Avatar
 
Join Date: May 2010
Location: Illinois
Posts: 2,181
Default Re: Another front drum / brake problem

I agree with Tom & Synchro. Shimming the bearing is not a good idea. That could promote the inner race turning and wear axle.

John
john in illinois is offline   Reply With Quote
Old 06-25-2017, 10:38 AM   #9
Ed H.
Senior Member
 
Join Date: Jun 2013
Location: Milton NH
Posts: 148
Default Re: Another front drum / brake problem

Quote:
Originally Posted by Vin-tin View Post
No crud. Everything was blasted and painted.
I can push the shoes towards the backing plate, but the shoe springs pull it away again slightly. I figured that's normal as you don't want the shoes contacting the backing plate...?
Later cars have spring and washer holding shoe against the backing plate. I would make sure there is a little pressure on the shoe towards the drum.
__________________
If you see a bomb technician running, do everything in your power to keep up with him.

United States Navy
Ed H. is offline   Reply With Quote
Old 06-25-2017, 10:56 AM   #10
jax55
Senior Member
 
jax55's Avatar
 
Join Date: May 2014
Location: Santa Barbara, Ca
Posts: 329
Default Re: Another front drum / brake problem

I'm with Tom and Synchro. I don't recall ever doing a brake job with the shoes being pulled away from the backing plate that has worked out well.
There is usually a raised pad on the backing plate that is lightly greased and the shoes ride on that pad.
interested to see what you find that resolves the issue. I also agree with NOT spacing the bearing out... band aid for another problem IMO
jax55 is offline   Reply With Quote
Old 06-25-2017, 10:58 AM   #11
denniskliesen
Senior Member
 
denniskliesen's Avatar
 
Join Date: Nov 2016
Location: SoCal
Posts: 877
Default Re: Another front drum / brake problem

You might try swapping the shoes left for right. They're the same unless there is something wrong with one of the shoes.
denniskliesen is offline   Reply With Quote
Old 06-25-2017, 02:12 PM   #12
1937hemi
Member
 
1937hemi's Avatar
 
Join Date: Feb 2015
Location: North Texas
Posts: 39
Default Re: Another front drum / brake problem

had the same problem and found that it was not the shoe dragging but the outside edge of the drum was rubbing on the outer flange of the backing plate. I had .088" machined from the outside edge of the drum and it works fine. Outside edge: I mean if you look at the surface of the drum that the shoes fit into then it is the outer edge (90 degrees from the brake surface)
1937hemi is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 12:24 PM.