Pulsing Brake Pedal

[Tackettr]

One of my deuces brake pedal has a pulsing feedback when stopping. If it was my civilian truck I would say the rotors needed turned but is this normal on some of the dueces. It stop quick and straight, just feel that feedback in the pedal. Thanks.

 

[gimpyrobb]

Could be a bad airpack.

 

[Barrman]

Is the pedal easy to push? Like power brake in a car easy to push is what I am asking. Mine doesn't pulse and neither does any other M35 I have driven. However, the spring that returns the pedal to full up on mine keeps coming off. When that happens, the pedal feels different when I lightly apply the brakes. Not exactly a pulsing, but close.

I would suggest you pick up a few wheels and spin the tires. You might have some out of round drums. They will be easily detected when you spin the tire and it stops or has a real hard spot to push through and then spins free for another 320 degrees back to that spot. A minor shoe adjustment might take care if that if you do it right though. Let us know what you find.

 

[Tackettr]

Thanks for the help guys. The brake pedal is easy to push as far as a duece goes. I just feel the feed back. I'll check the spring just in case and will raise the wheels and check roundness. Thanks.

 

[oifvet]

It has always been my understanding that setting a (parking) brake when the drums are hot will "push" them out-of-round. Pulsing pedal is the result.

However, reading the below posts tells me that this would NOT be the issue with a deuce!

Maybe someone once "held" the brake pedal down hard when the drums were hot.

Regardless, that would be frustrating.

Hopefully, you'll have a simple enough fix.

Interesting.

 

[Stretch44875]

Remember, the deuce parking/emergency brake is on the rear of the transfer case. No effect to the regular/service brakes.

 

[Barrman]

The M35 parking brake is on the t-case.

Something else to check is the drum retaining screws/nuts. All 10 should be on each drum and tight. Since the wheel doesn't hold the drum on, you could have a drum several inches off and not know it by just looking at the tires. I didn't write that correctly and I can't think of a better way to put it. A drum severeal inches off wouldn't be touching the brakes. But, a drum loose with only one or two nuts still holding it on could be right at that point, but wobble a lot toward the tire the rest the way around.

 

[jim-m35a2]

Sounds like a out-of-round brake drum. Common problem with drum brakes. If they are not too bad, you might be able to have them turned.

Jim
________
Ebony Webcams

 

[212sparky]

What did you find was the issue? I drove my truck today after about 3 weeks of sitting and it felt like my brakes were frozen when i was ready to go. i have had frozen brakes on other trucks where water gets in the drums and freezes and did not think any thing about it. i was driving and applied the brakes lightly and had a pulsing sensation but if i press harder it went away. any ideas?

 

[Heavysteven]

Same here looking for thought's Brake pads and pedal adjusted.