Disaster Strikes
We have been doing the AL Can and Alaska since the end of May. We had were winding up a 4 day stay in Denali NP, and the area around it on 6-22. We left our RV Park and drove both the MH and toad ...
Forum Discussion
gfs1943 wrote:Ductape wrote:BurbMan wrote:
...when you step on the brake pedal, you dump air from the system, allowing strong springs to return the brakes to their applied position...
No, the Parking brake is spring applied and air pressurized to release, but the service brakes are air applied.
Correct. Usually, the parking brakes are only on the rear wheels. There are two air chambers per brake. One holds the spring brakes released, the other applies the service brakes.
Yup the yellow knob applies air to release the spring brakes only, the brake pedal applies air to push the brakes in and has nothing to do with the springs , they remain held back by air.( you can do this with the spring brakes still engaged ). two separate functions and very misunderstood. A good reason for taking a air brake course.
Also a good reason for those with large pets and vertical valve buttons ( it takes some weight to push the valve down) to protect the valve in some way
