locked brakes
I have a 2002 Monaco Diplomat that I haven't driven for about 6 weeks Just went to get it ready for camping and the brakes seemed to be locked. Any thoughts?
Forum Discussion
azdryheat wrote:dougrainer wrote:The low pressure warning tone/light comes on between 55 and 75 psi and it means to pull over immediately and stop before the air pressure drops low enuf to lock up the brakes. The spring brakes engage/lock up between 20 and 45 psi, the yellow parking brake knob pops out, and the spring brakes lock up the wheels. I've not read anything that says the system must have 75 psi to open the spring brakes. In actual practice, when I'm waiting for the air to come up, as soon as the alarm tone goes off at (usually) 65 psi I can immediately release the parking brake.azdryheat wrote:
Your Diplomat is a Diesel Pusher with air brakes, correct? Are you saying the brakes are still locked up with the air pressure in the normal range?
If you don't have a MINIMUM of 75 lbs on each air tank the brakes will not release. Doug
I use 75 because most dash air gauges are NOT that accurate. I tell customers 75 because when you watch and listen the air tone goes off just when you pass the 65/70 on the gauge. If you attempt to move when it just hits 65, odds are when you push the brake pedal to engage the transmission, you will drop below the 65 psi and have to start over and build up the pressure again. Also, just reaching the 65/75 threshold, you have NOT allowed the air bags to fully inflate. Doug
