What’s this brake noise?
04-14-2021, (Subject: What’s this brake noise? ) 
Post: #1
What’s this brake noise?
What’s this foot valve noise?

I couldn’t upload a video, so I uploaded in YouTube. Here’s a link.

https://youtu.be/IThe_rr6MaA
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04-14-2021, (Subject: What’s this brake noise? ) 
Post: #2
RE: What’s this brake noise?
have someone press the brake pedal, go outside and find it?


User's Signature: ->: What I post is just my own thoughts and Opinions! --- I AM Full Of S__T!.
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04-14-2021, (Subject: What’s this brake noise? ) 
Post: #3
RE: What’s this brake noise?
Finally found someone at a truck stop. That QR1 valve is now just throwing air. I guess it’s feeding back to the foot valve. It’s the foot valve that’s making the noise though. I never did get around to changing the QR1 valve yet. Guess I’ll get on that ASAP.
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04-14-2021, (Subject: What’s this brake noise? ) 
Post: #4
RE: What’s this brake noise?
So, I didn’t order the QR1 valve yet because I came across a QR1 and QR1C. I’ve looked for info on the difference, but not exactly sure. I’m assuming I most likely just have the regular QR1. Any comments?
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04-14-2021, (Subject: What’s this brake noise? ) 
Post: #5
RE: What’s this brake noise?
The QR1C has a check valve in it that acts as an anti compounding valve

You don't have spring brakes on the front do you?

http://www.plazafleetparts.com/uploads/2...ervice.pdf
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 Thanks given by: Rawze
04-15-2021, (Subject: What’s this brake noise? ) 
Post: #6
RE: What’s this brake noise?
No, I’ve got regular style brake chambers, no springs. Unless of course you see something different in the pics I attached. Looks like regular QR1 valve then. It’s definitely 1/2” supply and 3/8” delivery ports.


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