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OPERATION 161
Parking Brake Operation
The parking brakes can be applied and released from the cab, using the
hand-operated push/pull control valve with the yellow diamond knob.
In the event of a significant air pressure loss in both the air brake systems,
the spring brake air chambers will be automatically exhausted (applying the
brakes). The parking brakes will remain applied until enough pressure is
available to recompress the springs.
Parking
WARNING
• NEVER use the trailer parking brake system alone.
• NEVER use the tractor parking brake system alone.
• ALWAYS use the tractor and trailer parking brake systems together.
• ALWAYS apply the parking brakes when parking and make sure the parking
brakes are holding the vehicle from moving before leaving the driver’s seat.
• When parking on a grade, use wheel chocks under the rear wheels or turn
the front wheels to the curb. Do not leave diesel engine vehicles in gear; if the
vehicle should move, the engine may start by heat of compression.
• Check brake adjustment frequently to be sure that the brakes will lock and
hold the vehicle when parked.
• Do not use the parking brake to slow or stop the vehicle when in motion,
except in an emergency.
• Do not use hand control valve for parking.
Anti-Lock Brake System (ABS)
Note:
Anti-lock brake systems became mandatory in the U.S.A. on all tractors
beginning March 1, 1997; all trucks beginning March 1, 1998, and all trailers
beginning March 1, 2001. Federal regulations require that any tractor/truck with a
trailer air connection built beginning March 1, 2001 must have a data communications
link with the trailer ABS and an indicator lamp located in the cab to alert the driver if
there is a trailer ABS malfunction.
Summary of Contents for Granite GU Series
Page 2: ......
Page 11: ......
Page 44: ...SAFETY INFORMATION 33 Advisory Label Locations On Vehicle Labels Found on Chassis C0029831 ...
Page 45: ...34 SAFETY INFORMATION C0028958 ...
Page 46: ...SAFETY INFORMATION 35 C0028959 ...
Page 47: ...36 SAFETY INFORMATION C0029013 1 Right Side Frame Rail 2 Hood Prop ...
Page 48: ...SAFETY INFORMATION 37 C0029014 ...
Page 49: ...38 SAFETY INFORMATION Labels Found on Driver Side Sun Visor C0029832 ...
Page 50: ...SAFETY INFORMATION 39 C0029016 ...
Page 58: ...SAFETY INFORMATION 47 C0029833 ...
Page 60: ...SAFETY INFORMATION 49 C0029834 ...
Page 62: ...SAFETY INFORMATION 51 C0029835 ...
Page 72: ...INSTRUMENTS AND CONTROLS 61 Panel B W3056238 ...
Page 81: ...70 INSTRUMENTS AND CONTROLS C0029141 ...
Page 82: ...INSTRUMENTS AND CONTROLS 71 Diagnostics W3036575 W3036576 W3036583 ...
Page 84: ...INSTRUMENTS AND CONTROLS 73 C0029144 ...
Page 113: ...102 INSTRUMENTS AND CONTROLS C0029240 C0029241 ...
Page 235: ...224 OPERATION C0029351 ...
Page 241: ...230 OPERATION C0029352 ...
Page 284: ...MAINTENANCE AND LUBRICATION 273 C0029851 C0029852 1 Towhook Access ...
Page 305: ...294 MAINTENANCE AND LUBRICATION C0029434 1 Front 2 Back ...
Page 317: ......