Brake systems provided are Service Brakes, Emergency Brakes, Parking Brakes and Retarder Brakes, You're familiar
with the service brakes operated by the foot treadle. In an emergency, the. emergency brake system can be applied
manually by pulling the yellow, diamond shaped knob with the right hand. When you pull it, though, expect a "dynamite
brake application", since the springs in each rear chamber release and lock the rear tandem.
With lowering of air
pressure through leaks or a broken hose, the emergency brake system will also apply. While the emergency brake
system is intended, by the U. S. Department of Transportation (DOT) to stop the truck, be careful that your truck doesn't
stop all of the traffic behind you! Get use to these emergency brakes, before you have an emergency Know how to apply
and release with a good air supply and, how to do it without. sufficient air pressure charge.
The Parking Brake System is also operated by pulling out the yellow, diamond shaped knob. At a halt, pull the knob
and-all of the wheels on the rear tandem are mechanically spring applied so you can walk away from the truck, empty or
loaded, on grades up through 30%.
Over in the upper left hand corner of the dash is a little, toggle switch. This is to turn-on the engine-retarder brake
system. This Ls your "Take Brake." You can leave your Jake Brake on all the time, leave it off all the time, or switch it on
and off, as you desire. With the lake Brake on, the truck operates normally
no change -, except when you take your foot completely off of the accelerator, while the truck is traveling at speed.
With the Jake Brake switched on, you can