emergency brake adjustment question
Thread Starter
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Fleet Mechanic
Joined: Jun 2002
Posts: 1,986
Likes: 43
From: maryland
emergency brake adjustment question
2017 f350
so i recently had to replace my emergency brake shoes (pads fell off 2 of the shoes). i adjusted the brakes to be tight. i drove about 3oo miles and the shoes were loose and wouldn't hold truck. i took the drums off and adjusted the wheel to tighten the shows up. a tank of fuel later the shoes are loose again.....
when i had everything apart i cleaned the adjusters of rust and sprayed them with wd40 to operate easily. i can't seem to figure out how they are unwinding themselves........
so i recently had to replace my emergency brake shoes (pads fell off 2 of the shoes). i adjusted the brakes to be tight. i drove about 3oo miles and the shoes were loose and wouldn't hold truck. i took the drums off and adjusted the wheel to tighten the shows up. a tank of fuel later the shoes are loose again.....
when i had everything apart i cleaned the adjusters of rust and sprayed them with wd40 to operate easily. i can't seem to figure out how they are unwinding themselves........
Thread Starter
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Fleet Mechanic
Joined: Jun 2002
Posts: 1,986
Likes: 43
From: maryland
like rotate them end for end ?
here is a real dumb question/thought. i didnt even take notice as i didnt think it mattered. i guess i will have to look for a diagram and then open them back up and see....... interesting thought
here is a real dumb question/thought. i didnt even take notice as i didnt think it mattered. i guess i will have to look for a diagram and then open them back up and see....... interesting thought
www.DieselCurrent.com
Joined: Nov 2024
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From: Lake County Ohio
I was thinking some older adjusters were opposite threads.
I was suggesting you had the driver side on the passenger and reversed.
Unless you did 1 side at a time.
Thread Starter
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Fleet Mechanic
Joined: Jun 2002
Posts: 1,986
Likes: 43
From: maryland
oh- i understand.
no i did 1 at a time so i could reference the complete system if a question arose-
i am searching and a post said they might be self adjusting and to back up a couple times hitting the brakes and set the emergency brake a couple times....... this doesnt seem to be it either as it was set tight.........
no i did 1 at a time so i could reference the complete system if a question arose-
i am searching and a post said they might be self adjusting and to back up a couple times hitting the brakes and set the emergency brake a couple times....... this doesnt seem to be it either as it was set tight.........
Cargo Master
Joined: Feb 2017
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From: Wisconsin
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Thread Starter
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Fleet Mechanic
Joined: Jun 2002
Posts: 1,986
Likes: 43
From: maryland
so i adjusted them tight to hold the truck (empty on a slope). the pedal only depressed half the way down and the brakes were set.
after driving a bit the pedal goes almost the whole way down and the truck isnt held on the slope and in neutral.
so not to be difficult but do i need to keep setting the brake and releasing it over and over for the self-adjusting to work? maybe i had it too tight and it self-adjusted to loose?
after driving a bit the pedal goes almost the whole way down and the truck isnt held on the slope and in neutral.
so not to be difficult but do i need to keep setting the brake and releasing it over and over for the self-adjusting to work? maybe i had it too tight and it self-adjusted to loose?
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Lead Driver
Joined: Nov 2005
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Self adjusting only snugs them up, does not back off if too tight.
And, yes, repeated application of the parking brake pedal should tighten it up if the self adjuster mechanism is operating properly.
The self adjusting screw must be backing off, like the arm that engages the adjuster wheel is not holding it.
And, yes, repeated application of the parking brake pedal should tighten it up if the self adjuster mechanism is operating properly.
The self adjusting screw must be backing off, like the arm that engages the adjuster wheel is not holding it.
Lead Driver
Joined: Nov 2005
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I did see the one with the spring riding against the adjuster wheel.
But, there does need to be something that keeps the adjuster wheel from moving on its own.
Thread Starter
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Fleet Mechanic
Joined: Jun 2002
Posts: 1,986
Likes: 43
From: maryland
ok- i will have to take back apart to look and make sure i have the wheel to the back-
i remember the spring so hopefully i just did a stupid thing
thanks that picture helped.
i remember the spring so hopefully i just did a stupid thing
thanks that picture helped.
Thread Starter
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Fleet Mechanic
Joined: Jun 2002
Posts: 1,986
Likes: 43
From: maryland
thanks for the info-
it appears i am just an idiot.
the driver side had the adjustment wheel towards the back but the passenger side had the wheel to the front.
i switched it around and adjusted the brakes again.
hopefully this is all......
it appears i am just an idiot.
the driver side had the adjustment wheel towards the back but the passenger side had the wheel to the front.
i switched it around and adjusted the brakes again.
hopefully this is all......