User's Manual

13
Date of Origin – 02/01/08
PARKING/EMERGENCY BRAKING SYSTEM
This portion of the air brake system makes provision for parking a vehicle on a grade and for
emergency stopping in the event of a failure of air supply in the service brake system.
Air pressure within the parking brake chamber is required to release the spring brake. An air
reservoir is provided to store enough air to release the brakes at least once by means of the
tractor parking brake control, if there is an air line failure. In addition to the normal release of
spring brakes using air, a built-in manual release is provided. It allows easy release of the spring
brakes for relining the brakes or for moving the trailer in the absence of air pressure.
WARNING
!
DO NOT ATTEMPT TO MOVE THE TRAILER UNTIL PARKING BRAKE IS FULLY
RELEASED. FAILURE TO FOLLOW THIS SAFETY WARNING WILL
RESULT IN EQUIPMENT DAMAGE AND COULD RESULT IN SERIOUS
INJURY OR DEATH.
DANGER
!
MANUAL RELEASE OF THE PARKING BRAKE SHOULD ONLY BE USED TO MOVE
THE TRAILER TO A SAFE LOCATION WHERE REPAIRS CAN BE PERFORMED.
ALWAYS INSTALL WHEEL CHOCKS IN FRONT OF AND BEHIND TIRES BEFORE
MANUALLY RELEASING SPRING BRAKES. FAILURE TO FOLLOW THIS
SAFETY WARNING COULD RESULT IN DEATH OR SERIOUS INJURY.
WARNING!
NEVER ATTEMPT TO USE THE TRAILER FOR THE MAJORITY OF THE BRAKING
EFFORT BY BACKING OFF THE TRACTOR BRAKES. THIS IS ILLEGAL, UNSAFE,
AND WILL CAUSE PREMATURE FAILURE OF THE TRAILER BRAKE SYSTEM.
FAILURE TO FOLLOW THIS SAFETY WARNING COULD RESULT IN
DEATH OR SERIOUS INJURY.
OPERATING INSTRUCTIONS