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OPERATION 181
COUPLING A TRAILER
1. Position the tractor directly in front of the trailer.
2. Back the trailer slowly until the fifth wheel just contacts the trailer plate.
3. Place the transmission in neutral and apply the parking brakes.
4. Connect the trailer glad hands and electrical connector.
CAUTION
Make sure the trailer air lines and the trailer electrical cord are properly supported
so they will not be pinched or caught while the tractor is being backed under the
trailer.
5. Check that the fifth wheel height matches the height of the underside of
the trailer. If the trailer is too high, use the landing gear to lower the trailer
until fifth wheel and trailer height match. If the vehicle is equipped with an air
suspension and the trailer is too low, use the air suspension control switch
to exhaust air from the suspension air bags until fifth wheel and trailer height
match.
CAUTION
Failure to match fifth wheel height with trailer height will result in the trailer being
improperly connected.
6. Back under the trailer slowly until the trailer king pin engages. Back slowly
to avoid hitting the king pin too hard, and stop as soon as the king pin is
locked into the fifth wheel.
7. If equipped with an air suspension, use the air suspension control switch
to reinflate the suspension air bags.
8. Raise the trailer landing gear slightly off the ground.
9. With the trailer parking brakes applied, pull the tractor ahead slightly to
ensure that the trailer is locked onto the tractor.
10. Push the trailer air supply valve (red octagonal knob) in to supply the trailer
system with air pressure. With the air system at normal operating pressure,
check the trailer air brake system for excessive leakage and proper operation.
Summary of Contents for Granite GU Series
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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: ......