The Stovebolt Site Forums The Shop Area Driveline Brake Pedal Stop?

While working on the transmission and power brake set-up, I want to fix the brake pedal hitting the floor. Working on a '52 3100 and since we've owned it, after applying the brakes and when you take your foot off of the pedal, it slams up against the floorboard. Is there supposed to be some sort of stop other than the sheetmetal floor?

No stop on the brake pedal at firewall


If your pedal slams you'll probably mess up your brake switch arm

Only stop is on clutch pedal. I put a short rubber sleeve over the end of my brake switch arm, doesn't effect operation and dampens the noise a little bit. A piece of foam on brake arm/firewall may help as long as it doesn't interfere with brake switch operation.

Don't know what kind of power brake kit you have, however if you read the manual for your truck you will see a "toe board clearance" adjustment. There is a clevis nut to adjust for 13/16 space between brake arm and under side of toe pan. Pedal is not supposed to slam against the floor board. The linkage stops the pedal. As I said, don't know what effect your power brake set up has on this original adjustment feature. Adjust the new system to NOT slam using linkage adjustments.
The 13/16 is just a target dimension now because of your modifications. Adjust pedal so that brake switch is activated but not smashed, pedal does not slam and brake pressure is released.

Option: (if all else fails)
I think a brake pressure switch is included in some power brake kits or you can add one in the line with a tee for $10. Then remove mechanical switch and add bumper.

What Forty9 said. A man I knew who operated a gas station used to do the same thing. It helps some. Also you can get a jute or horsehair pad about 1/2 to 3/4 inch thick and put it under the entire floormat (leave it short at the edges so the mat won't stick up). You'll need to cut out for the battery door and the brake cylinder access hole, but it will make most things in there more quiet and warmer in cold weather. Also the rubber stop on your clutch arm is likely to be hard at this age. At least mine is.

Some good key points, so thank you!

I’ll take a look as I think there may a new switch in the new power brake setup, if so, I can put the other one aside and then look into adjusting this pedal to avoid the contact.

You could also rebel against the establishment

...click...

DADS50,

Have you ever posted that photo/info before this? Your "solution" seems too simple.

Too easy!

That bumper is fine if it does not prevent the master cylinder push rod from coming to the fully extended position, preventing the master cylinder from working properly.

thanks
I installed it by mistake, I simply thought one was on there when I took it apart.

Decided to leave it since my brakes work perfectly

If that bumper wasn't there, would the lever arm hit the cab?