0
I think you mean QR-1 valve, and you're not guaranteed to have that. You could have a QR-1, QR-1, or an R14 relay valve. It's usually mounted high and near the center. Go under the truck, follow the lines from the emergency chamber of the brake chamber up - the valve they both connect to will be the metering valve for the spring brakes. A QR-1 valve will have three air lines attached to it, a QR-1C will have four, an R14 relay valve will have at least five.
Still curious? Ask our experts.
Chat with our AI personalities
EzraFaith is not about having all the answers, but learning to ask the right questions.
Chat with Ezra
LaoThe path is yours to walk; I am only here to hold up a mirror.
Chat with Lao
ProfessorI will give you the most educated answer.
Chat with ProfessorAdd your answer:
Earn +20 ptsQ: On a big rig where is the SR-1 spring brake valve located?
Write your answer...
Submit
Still have questions?
Trending Questions
Who accepts car care one card?
When did cup holders first arrive in US cars?
On a New York license plate is New York on the top or bottom?
Where can you find flat bed trailers?
If car enters a curve it tends to do what?
What types of insurance are offered by Cotton States Insurance?
Tailgating greatly increases your chances of a collision with a truck?
What PSI should the trailer Air Supply control valve close?
What is a validation decal?
Where can you get a car charger for Nokia phones?
If 2 cars meet on a narrow grade and they cant pass the right way should be yielded to?
How do you close side mirror of x5?
What is the base engine size of the 2003 GMC Sierra-1500?
Will a bad oil pressure switch cause high oil pressure in a 91 jeep warngler?
Convert 230 ftlb to HP?
Does inspection sticker expire first or last day of month?
Can I carry the insurance on a car that is financed in my spouses name if he is no longer able to drive?
What year was the car Rocky drove in Rocky 4?
What are the disadvantages for drilling oil?
How do you get air out of vz v6 radiator?
Copyright ©2025 Infospace Holdings LLC, A System1 Company. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Answers.