The Ford Barn

bunnyc · 07-02-2015, 04:12 PM

Even though our '29 Tudor would brake adequately, my husband decided to give adjusting the brakes a try. The fact that both clevis arms were not at the 15 deg. forward position was bothering him. Both actually were about 15 deg. aft.
In preparation for this we ordered new operating pins and a package of shims (pills).
He decided to start on the RF wheel. After installing the new operating pin and one shim, the clevis arm would just come forward to the 12 o'clock position.
It would seem we have wear in another component. We think either the horizontal operating shaft or the wedge where the pin fits.

Which is most likely to wear?

I suppose we could try new wedges first; less expensive and easier to install.
(The old operating pin was about 1/16" short of spec.)

Larry Jenkins · 07-02-2015, 04:37 PM

Snyders sell the right length pins. Just installed a set and my levers are all the way to the front. And, no "pills."

I've never seen a bad wedge.

Larry

bunnyc · 07-02-2015, 04:46 PM

Bought the pins and shims from Snyder's. Pins are 7-1/4" length. No problem there.

bunnyc · 07-02-2015, 05:03 PM

The recess in the wedge were the pin fits measures 0.346" deep. We have no idea what the tolerance for this would be. Sound OK?

barkleydave · 07-02-2015, 05:10 PM

Just went through that on my CCPU. One thing led to another. Bottom line tracks were worn. This is not an easy fix. We had to remove, weld them back up and then mill them to org. spec. I was lucky a club member has a complete shop with lathes, presses and a mill machine.

Now I have rebuilt completely in front with cast iron drums. Next this fall we are going after the rears....

What ever you do not cut corners on brakes!

Mitch//pa · 07-02-2015, 06:21 PM

Sponsored Links (Register now to hide all advertisements)

is your car jacked up under the axle or frame ?
did you remove the brake rod clevis pin to make sure the lever is in a relaxed position?

bunnyc · 07-02-2015, 06:38 PM

Mitch, supported under both axles; all 4 wheels off the ground.
Yes, the pin is removed from the clevis arm where the brake rod attaches.
We've discovered some play where the clevis arm is attaches to the horizontal operating shaft. Elongated holes. There is a 1/4" diameter bolt in there now. We're considering drilling that out to 7mm, if we can find a 7mm bolt at TSC.

SeaSlugs · 07-02-2015, 07:08 PM

I usually have better luck finding metric oddities at ACE hardware..

Bob C · 07-02-2015, 07:37 PM

That should be a pin not a 1/4" bolt.

Bob

bunnyc · 07-02-2015, 07:46 PM

Yes, there should have been a pin. A bolt is what was there.

Tom Foster · 07-02-2015, 08:01 PM

Elongated holes in the clevises can be reamed out to 5/32 and oversize pins installed.
Fearless

BILL WILLIAMSON · 07-02-2015, 08:35 PM

Chief, my Dad, always said, "DON'T ever PATCH stuff, it'll come back to HAUNT you, patchin' is ONLY fer gittin' you home fur SUPPER"
Bill W.

1955cj5 · 07-02-2015, 09:00 PM

I needed to put two shims in mine to get the arm 15° forward..

And I also welded the front roller tracks and ground them with a dremel....

07-02-2015, 04:12 PM	#1
bunnyc Senior Member Join Date: Apr 2015 Location: KY Posts: 296	Front brake question Even though our '29 Tudor would brake adequately, my husband decided to give adjusting the brakes a try. The fact that both clevis arms were not at the 15 deg. forward position was bothering him. Both actually were about 15 deg. aft. In preparation for this we ordered new operating pins and a package of shims (pills). He decided to start on the RF wheel. After installing the new operating pin and one shim, the clevis arm would just come forward to the 12 o'clock position. It would seem we have wear in another component. We think either the horizontal operating shaft or the wedge where the pin fits. Which is most likely to wear? I suppose we could try new wedges first; less expensive and easier to install. (The old operating pin was about 1/16" short of spec.)

07-02-2015, 04:37 PM	#2
Larry Jenkins BANNED Join Date: Feb 2015 Location: East Central Iowa Posts: 1,275	Re: Front brake question Snyders sell the right length pins. Just installed a set and my levers are all the way to the front. And, no "pills." I've never seen a bad wedge. Larry

07-02-2015, 04:46 PM	#3
bunnyc Senior Member Join Date: Apr 2015 Location: KY Posts: 296	Re: Front brake question Bought the pins and shims from Snyder's. Pins are 7-1/4" length. No problem there.

07-02-2015, 05:03 PM	#4
bunnyc Senior Member Join Date: Apr 2015 Location: KY Posts: 296	Re: Front brake question The recess in the wedge were the pin fits measures 0.346" deep. We have no idea what the tolerance for this would be. Sound OK?

07-02-2015, 05:10 PM	#5
barkleydave Senior Member Join Date: Oct 2014 Location: Kentucky Posts: 502	Re: Front brake question Just went through that on my CCPU. One thing led to another. Bottom line tracks were worn. This is not an easy fix. We had to remove, weld them back up and then mill them to org. spec. I was lucky a club member has a complete shop with lathes, presses and a mill machine. Now I have rebuilt completely in front with cast iron drums. Next this fall we are going after the rears.... What ever you do not cut corners on brakes!

07-02-2015, 06:21 PM	#6
Mitch//pa BANNED Join Date: May 2010 Location: Bucks County, PA Posts: 11,454	Re: Front brake question Sponsored Links (Register now to hide all advertisements) is your car jacked up under the axle or frame ? did you remove the brake rod clevis pin to make sure the lever is in a relaxed position?

07-02-2015, 06:38 PM	#7
bunnyc Senior Member Join Date: Apr 2015 Location: KY Posts: 296	Re: Front brake question Mitch, supported under both axles; all 4 wheels off the ground. Yes, the pin is removed from the clevis arm where the brake rod attaches. We've discovered some play where the clevis arm is attaches to the horizontal operating shaft. Elongated holes. There is a 1/4" diameter bolt in there now. We're considering drilling that out to 7mm, if we can find a 7mm bolt at TSC. Last edited by bunnyc; 07-02-2015 at 06:51 PM.

07-02-2015, 07:08 PM	#8
SeaSlugs Senior Member Join Date: May 2010 Location: Central, IL Posts: 3,968	Re: Front brake question I usually have better luck finding metric oddities at ACE hardware.. __________________ 1929 Model AA - Need long splash aprons!

07-02-2015, 07:37 PM	#9
Bob C Senior Member Join Date: May 2010 Location: So Cal Posts: 8,751	Re: Front brake question That should be a pin not a 1/4" bolt. Bob

07-02-2015, 07:46 PM	#10
bunnyc Senior Member Join Date: Apr 2015 Location: KY Posts: 296	Re: Front brake question Yes, there should have been a pin. A bolt is what was there.

07-02-2015, 08:01 PM	#11
Tom Foster Senior Member Join Date: May 2010 Location: San Antonio, Texas Posts: 160	Re: Front brake question Elongated holes in the clevises can be reamed out to 5/32 and oversize pins installed. Fearless

07-02-2015, 08:35 PM	#12
BILL WILLIAMSON Senior Member Join Date: Dec 2010 Location: FRESNO, CA Posts: 12,560	Re: Front brake question Chief, my Dad, always said, "DON'T ever PATCH stuff, it'll come back to HAUNT you, patchin' is ONLY fer gittin' you home fur SUPPER" Bill W. __________________ "THE ASSISTANT GURU OF STUFF"