280 OPERATION
Foot Brake Valve
The foot brake valve is directly connected to the brake pedal. The valve gives a
progressive output against the pedal travel. This allows better control of the pressure
in the first half of the pedal travel. In the last half of the pedal travel, the pressure
output increase is faster.
The foot brake valve applies the service brakes, incorporating both the primary
and secondary air systems. The primary system controls the rear brakes and the
secondary system controls the front brakes. The foot brake valve receives air from
the compressed air tanks. Air pressure is then delivered to the wheel brake chambers
as required by the amount of pressure exerted on the foot brake pedal. The brake
chamber force then applies the wheel brakes.
From the operator’s viewpoint, operating the foot brake valve of a vehicle equipped
with air brakes differs very little from the operation of a conventionally braked
vehicle. Because the operation of the brake pedal requires scarcely more effort than
depressing the average throttle pedal, air brakes are naturally much easier to control.
If the driver gives full attention to the following suggestions, a little experience will
make him/her thoroughly familiar with the air-controlled braking of this vehicle.
DANGER
Failure to observe these precautions
can result in loss of vehicle control and
serious personal injury or death.
Summary of Contents for VN
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Page 13: ...4 INTRODUCTION W0036011 ...
Page 38: ...SAFETY INFORMATION 29 W8003120 VN ...
Page 39: ...30 SAFETY INFORMATION W8003127 VN without Fairings ...
Page 48: ...SAFETY INFORMATION 39 W4001391 ...
Page 64: ...INSTRUMENTS AND CONTROLS 55 INSTRUMENT PANEL GAUGE LAYOUT W3007473 Panel Arrangement ...
Page 66: ...INSTRUMENTS AND CONTROLS 57 4 Tractor Parking Brake Panel B W3007470 ...
Page 82: ...INSTRUMENTS AND CONTROLS 73 OR ...
Page 118: ...INSTRUMENTS AND CONTROLS 109 W3005274 VNL Fog and Driving Lights ...
Page 148: ...INSTRUMENTS AND CONTROLS 139 W3005500 VN 780 VN 730 ...
Page 153: ...144 INSTRUMENTS AND CONTROLS W3005967 ...
Page 155: ...146 INSTRUMENTS AND CONTROLS W3005343 120 Volt System Wiring VN 670 VN 630 ...
Page 168: ...INSTRUMENTS AND CONTROLS 159 W8003821 CB Radio Switch Panel and Three Openings with Nets ...
Page 170: ...INSTRUMENTS AND CONTROLS 161 W8003793 Forward Overhead Shelf with Cabinets ...
Page 174: ...INSTRUMENTS AND CONTROLS 165 W8028486 Load Limits ...
Page 187: ...178 INSTRUMENTS AND CONTROLS W8028527 VN 670 630 Lower and Upper Bunks ...
Page 189: ...180 INSTRUMENTS AND CONTROLS VN 670 W8028529 Moveable Cushions in Lower Bunk ...
Page 194: ...INSTRUMENTS AND CONTROLS 185 W8003158 ...
Page 207: ...198 OPERATION W3035574 ...
Page 228: ...OPERATION 219 W5001359 W5001358 1 Unlocked Position 2 Locked Position ...
Page 248: ...OPERATION 239 W8003169 Upper Bunk W8003170 Lower Bunk ...
Page 250: ...OPERATION 241 W8028593 42 Inch Lower Bunk ...
Page 251: ...242 OPERATION W8028594 Upper Bunk ...
Page 258: ...OPERATION 249 W8001387 ...
Page 406: ...MAINTENANCE AND LUBRICATION 397 W5001430 ...
Page 411: ...402 MAINTENANCE AND LUBRICATION W7001304 Chains are not acceptable for Off roadway towing ...
Page 423: ...414 MAINTENANCE AND LUBRICATION W8003473 VN 630 670 Roof Extender Adjustment Chart ...
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