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Morning all, I've had a few instances where my emergency brake didn't want to release.
Any ideas what would cause that?
Thought I'd ask here first before calling newell service. I'm home now but don't like what I'm seeing with it.
home: Southern California
05 #746 quad slide 2000i, (She's Now living in FLA Again)
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You might check that the little nut on the back of the brake knob is tight.
Karen & Adrian Abshire
1998 2 slide 45' Newell Coach 498
Prior: 1985 Foretravel ORED 35, 1988 38' Foretravel U280, 2000 Foretravel 42' U320, 1990 Bluebird Wanderlodge WB40
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Could be a few things.
One it takes at least 60 psi to release the brakes. Check your air pressure.
Two, the mount for the release knob could be loose as Adrian said, meaning you are not actually pushing it in as far as you think.
Three, you could have an air leak somewhere in the path between the knob and the brakes.
Four, sometimes the shoes stick. A rap with a mallet is in order.
So, do you hear the typical air whoosh when you press the release knob?
Richard and Rhonda Entrekin
99 Newell, 512
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Inverness, FL (when we're home
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Richard I am hearing a air release and then the knob will pop right back out. Normally I apply the brake before trying to release it. Maybe I should not do that.
Thanks for the tips I'm going to check some of those items when i get in.
home: Southern California
05 #746 quad slide 2000i, (She's Now living in FLA Again)
Steerable tag
Detroit Diesel series 60 515 hp
Allison trans
Toad 2013 Avalanche Black Diamond edition 4 wheel drive
Posts: 5,409
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Joined: Jul 2012
If the knob pops out, then it is sensing the supply air is less than 60. The knob popping out is the built in safety feature that activates the spring load park brake because your brake supply is below 60.
What is your air pressure when you are releasing the brake?
Richard and Rhonda Entrekin
99 Newell, 512
Maverick Hybrid Toad
Inverness, FL (when we're home
)
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Check out this You Tube video on air systems and brakes.
https://www.youtube.com/watch?v=rMZwffPGAiQ
Dave, Karen, w/Buddy and Moose.
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As a school bus driver, I do the pretrip every day at work LOL,LOL From now on Ill pay attention to the air pressure. I don't have those issues on my bus
home: Southern California
05 #746 quad slide 2000i, (She's Now living in FLA Again)
Steerable tag
Detroit Diesel series 60 515 hp
Allison trans
Toad 2013 Avalanche Black Diamond edition 4 wheel drive
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(10-18-2021, 04:51 AM)rundlc Wrote: Morning all, I've had a few instances where my emergency brake didn't want to release.
Any ideas what would cause that?
Thought I'd ask here first before calling newell service. I'm home now but don't like what I'm seeing with it.
I wonder if you were able to pippoint the root cause of the symptoms, and be able to fix it?
If you replaced the parking brake release valve, please share the valve maker and model/part number.
Thanks
Joe Zhao @ Greenville TX 75402
2004 Newell Coach 701, 45-8, 4 Slides, Front Entry
Detroit Diesel 60 w/DDEC, Allison 6-Speed AT, ZF Suspension w/Steerable Tag, ZF Auto Traction Control
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Richard and Rhonda Entrekin
99 Newell, 512
Maverick Hybrid Toad
Inverness, FL (when we're home
)
