It can be attached to the bottom of the master cylinder or on the drivers side frame between the firewall and the radiator. Follow the brake lines coming out of the master cylinder.
No the EGR valve has nothing whatsoever to do with the brakes. It is an emissions control device. -But since it could affect a little the idling rate of the engine, and since the engine when idling generates more vacuum that by its turn assists the vehicle brakes force needed to act on the pedal, indeed it could "affect the brakes" a little. Not directly; as I described the driver would need to press harder on the pedal to get same breaking results as he/she is used to, maybe leading to some sort of dangerous situation.
The brake shoes may be out of adjustment causing the shoes to contact the drums prematurely. You could have a proportiong valve issue, but try adjusting the rear brakes first.
Relay valves are used to reduce the lag time when the brakes are applied, and when they are released. They are remote controlled air valves that respond to a con trol signal from the foot valve. They are usually mount ed on a frame rail close to the air chambers that they are to operate.
You bleed the skave cylinder just like your brakes. Pump a few times hold and open the bleeder valve and repeat.
you will need to bleed your brakes .allways start with the brake the farthest from the master cylinder , you can either gravity bleed them by yourself by loosening the bleeder valve on each wheel for 30 minutes each or have someone pump the brakes for you . have them pump the brakes until they get a partial pedal and hold until you release the wheel bleeder .repeat process 3 or 4 times until fluid is free of air and repeat process on each wheel .if this doesnt work you might need to replace youe master cylinder
Height sensing proportioning valve.
It is a valve in the brake lines going to the rear of the vehicle. It adjust the amount of fluid flow to the rear brakes depending on the height of the rear suspension. The lower the suspension, the more weight in the vehicle, the more rear braking power is needed.
The metering valve should be pressed down while bleeding the brakes. This is one of the steps to changing brakes.
The proportioning valve adjusts the amount of fluid pressure between the front brakes and rear brakes, I would say the answer is yes.
The treadle valve.
Yes it does.
If you have 4 wheel disc brakes, it doesn't use a proportion valve.
The bleeder valve for the brakes on a 1997 Ford Ranger is located in the brake line where it meets the brake disc. The wheel will have to be removed to access the bleeder screw for drum brakes.
If they're spring brakes, you won't be able to get them to release. The brake chambers won't actuate when you push on the treadle valve (brake pedal), the brake control valve won't remain pressed in.
Loosen the bleed valve
The same way you bleed brakes, but use the little bleeder valve on the slave cylinder. The same way you bleed brakes, but use the little bleeder valve on the slave cylinder.
Charles McShane has written: 'New York and Westinghouse air brakes' -- subject(s): Air-brakes 'New York and Westinghouse air brakes' -- subject(s): Air-brakes 'New York and Westinghouse air brakes' -- subject(s): Air-brakes 'Modern locomotive valves and valve gears' -- subject(s): Locomotives, Valve-gears 'The locomotive up to date' -- subject(s): Locomotives