Medium Duty Operator's Manual - Peterbilt Motors Company
Medium Duty Operator's Manual - Peterbilt Motors Company Medium Duty Operator's Manual - Peterbilt Motors Company
USING THE BRAKE SYSTEM Use engine compression to assist the service brakes by not depressing the clutch pedal until the engine reaches idle speed. Overheated Brakes Under normal braking conditions, the energy generated will bring the internal brake drum temperature to about 500°F (260°C). This is well within the safe zone: the maximum safe temperature of lining for drum type brakes is usually about 800°F (427°C). But if service brakes are used for emergency braking, used improperly, or for prolonged periods, internal brake drum temperatures may exceed 800°F (427°C). Such brake overheating may be detected by a burning smell or smoke coming from a drum. If this occurs, you should immediately stop and check for cracked brake drums or lining fires. If neither exists, get back behind the wheel and resume a slow speed as soon as possible to cool the brakes. If the vehicle was to remain stopped, the heat transfer could destroy the linings and distort the brake drum. STARTING AND OPERATING THE VEHICLE To prevent drums from distortion while they cool down: • Park the vehicle on level surface and block the wheels. • Release the parking brake and allow the brakes to cool down. See page 103. Anti-Lock Braking System This vehicle may be equipped with an anti-lock braking system (ABS). This ABS reduces the possibility of wheel lock-up. If a wheel is about to lock during braking, the ABS will automatically adjust air pressure to the brake chambers on the appropriate wheel(s) to prevent wheel lock-up. The ABS is automatically turned on when the ignition switch is turned on. ABS Warning Lamps Truck/Tractor ABS Warning Lamp A truck/tractor ABS warning lamp illuminates when the ignition switch is first turned on and will remain on until the system self-test has been completed successfully. Normally, the ABS lamp will remain on until a speed of no more than 9 mph has been reached and the speed sensors have been checked for correct output. The lamp – 110 – Y53-6008A Medium Duty (R05/09)
STARTING AND OPERATING THE VEHICLE should remain off after this point unless a failure in the system is detected. The truck/tractor ABS lamp is located in the warning lamp cluster. USING THE BRAKE SYSTEM ABS CAUTION: If the truck/tractor ABS warning light does not illuminate when the ignition is first turned on, there is a problem with the bulb or wiring. You should have this checked as soon as possible. Trailer ABS Warning Lamp Trucks, tractors, and trailers built on and after March 1, 2001 are equipped with power line communication (PLC) per U.S. FMVSS 121, including a trailer ABS warning lamp in the cab. CAUTION: If the trailer ABS warning lamp does not illuminate when the ignition is first turned on, there is a problem with the bulb or wiring. The driver should have this checked as soon as possible. NOTE: A successsful warning lamp illumination and bulb check at ignition on does not indicate that the trailer you may be connected to has trailer ABS. You should personally inspect every trailer to determine its braking system. A trailer ABS warning lamp will illuminate for a bulb check when the ignition switch is first turned on - whether or not a trailer is connected to the vehicle. If the bulb check is satisfactory, the lamp will next do either of the following: 1. If no trailer is connected, or if a non-ABS-equipped trailer is connected, the trailer ABS lamp will go off after a few seconds. Medium Duty (R05/09) Y53-6008A – 111 –
- Page 60 and 61: DASH- AND DOOR-MOUNTED FEATURES WAR
- Page 62 and 63: DASH- AND DOOR-MOUNTED FEATURES (2)
- Page 64 and 65: HEATER-AIR CONDITIONING CONTROLS He
- Page 66 and 67: HEATER-AIR CONDITIONING CONTROLS CO
- Page 68 and 69: CUPHOLDERS/ASHTRAY prevent damage s
- Page 70 and 71: ACCESSORIES Accessories Peterbilt N
- Page 72 and 73: SEATS Seats Introduction This secti
- Page 74 and 75: SEATS WARNING! Do not drive vehicle
- Page 76 and 77: SEATS • Be sure, also, that your
- Page 78 and 79: SEATS • If any seat belt is not w
- Page 80 and 81: SEATS During Pregnancy Pregnant wom
- Page 82 and 83: DRIVER'S CHECK LIST WARNING! Do not
- Page 84 and 85: DRIVER'S CHECK LIST Engine Compartm
- Page 86 and 87: DRIVER'S CHECK LIST 3. Mirrors—ch
- Page 88 and 89: STARTING AND OPERATING THE VEHICLE
- Page 90 and 91: STARTING AND OPERATING THE VEHICLE
- Page 92 and 93: STARTING AND OPERATING THE VEHICLE
- Page 94 and 95: STARTING AND OPERATING THE VEHICLE
- Page 96 and 97: OPERATING THE TRANSMISSION Operatin
- Page 98 and 99: OPERATING THE TRANSMISSION The best
- Page 100 and 101: OPERATING THE TRANSMISSION Release
- Page 102 and 103: USING THE BRAKE SYSTEM Brake Operat
- Page 104 and 105: USING THE BRAKE SYSTEM (2) Trailer
- Page 106 and 107: USING THE BRAKE SYSTEM STARTING AND
- Page 108 and 109: USING THE BRAKE SYSTEM Front Brakes
- Page 112 and 113: USING THE BRAKE SYSTEM NOTE: A “p
- Page 114 and 115: USING THE BRAKE SYSTEM WARNING! Do
- Page 116 and 117: USING THE BRAKE SYSTEM Brake Compon
- Page 118 and 119: USING THE BRAKE SYSTEM to the trail
- Page 120 and 121: USING THE BRAKE SYSTEM Hydraulic Bo
- Page 122 and 123: USING THE BRAKE SYSTEM sion. You co
- Page 124 and 125: OPERATING THE REAR/DRIVE AXLE START
- Page 126 and 127: OPERATING THE REAR/DRIVE AXLE Under
- Page 128 and 129: DRIVING TIPS AND TECHNIQUES ure or
- Page 130 and 131: DRIVING TIPS AND TECHNIQUES STARTIN
- Page 132 and 133: DRIVING TIPS AND TECHNIQUES WARNING
- Page 134 and 135: DRIVING TIPS AND TECHNIQUES Driving
- Page 136 and 137: DRIVING TIPS AND TECHNIQUES WARNING
- Page 138 and 139: VEHICLE RECOVERY AND SPRING BRAKES
- Page 140 and 141: VEHICLE RECOVERY AND SPRING BRAKES
- Page 142 and 143: VEHICLE RECOVERY AND SPRING BRAKES
- Page 144 and 145: SHUT-DOWN 3. Drain water from the a
- Page 146 and 147: Introduction Preventive Maintenance
- Page 148 and 149: Introduction tive harm. This warnin
- Page 150 and 151: Maintenance Schedule and Lubricatio
- Page 152 and 153: Maintenance Schedule and Lubricatio
- Page 154 and 155: Maintenance Schedule and Lubricatio
- Page 156 and 157: Maintenance Schedule and Lubricatio
- Page 158 and 159: Maintenance Schedule and Lubricatio
STARTING AND OPERATING THE VEHICLE<br />
should remain off after this point unless a failure in the<br />
system is detected. The truck/tractor ABS lamp is located<br />
in the warning lamp cluster.<br />
USING THE BRAKE SYSTEM<br />
ABS<br />
CAUTION: If the truck/tractor ABS warning<br />
light does not illuminate when the ignition is<br />
first turned on, there is a problem with the<br />
bulb or wiring. You should have this checked<br />
as soon as possible.<br />
Trailer ABS Warning Lamp<br />
Trucks, tractors, and trailers built on and after March 1,<br />
2001 are equipped with power line communication (PLC)<br />
per U.S. FMVSS 121, including a trailer ABS warning<br />
lamp in the cab.<br />
CAUTION: If the trailer ABS warning lamp<br />
does not illuminate when the ignition is first<br />
turned on, there is a problem with the bulb or<br />
wiring. The driver should have this checked<br />
as soon as possible.<br />
NOTE: A successsful warning lamp illumination<br />
and bulb check at ignition on does not indicate<br />
that the trailer you may be connected to has<br />
trailer ABS. You should personally inspect every<br />
trailer to determine its braking system.<br />
A trailer ABS warning lamp will illuminate for a bulb check<br />
when the ignition switch is first turned on - whether or not<br />
a trailer is connected to the vehicle. If the bulb check is<br />
satisfactory, the lamp will next do either of the following:<br />
1. If no trailer is connected, or if a non-ABS-equipped<br />
trailer is connected, the trailer ABS lamp will go off<br />
after a few seconds.<br />
<strong>Medium</strong> <strong>Duty</strong> (R05/09) Y53-6008A – 111 –
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