downgrade, use on-and-off application to minimize heat and wear. Do not hold a continuous brake application or
slide the wheels.
When driving on slippery pavement or under icy conditions, alternately and smoothly apply and release
brakes to prevent skidding.
Keep tires properly inflated. Improperly inflated tires can reduce the efficiency of brakes.
After driving through water, dry the brakes by applying lightly while maintaining a slow forward speed with
an assured clear distance ahead until brake performance returns to normal.
Regularly check on air pressure gage indication. Gage should never be allowed to fall below 70 psi as
automatic spring brakes will actuate. Normal operating pressure range is between 95 and 125 psi.
WARNING : IF LOW PRESSURE OCCURS AND THE BUZZER SOUNDS DURING OPERATION, STOP
IMMEDIATELY AND DETERMINE CAUSE OF AIR LOSS. DOWNSHIFT USING ENGINE AS A BRAKE AND
MAKE FINAL STOP USING A SINGLE BRAKE PEDAL MOVEMENT TO AVOID EXCESSIVE LOSS OF AIR
AND CONSEQUENT SUDDEN ENGAGEMENT OF THE AUTOMATIC SPRING BRAKES.
Make sure air tanks have not accumulated moisture. Moisture in the system and tanks can cause system
damage. Frozen systems can become inoperative.
If pressure gage drops over 2 psi per minute with engine stopped, have air system checked for leaks.
PARKING BRAKES.
Parking brakes are controlled by a readily identified "pushpull" knob on dash panel. To apply parking
brake, pull knob out -to release, push knob in.
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