Medium Duty Operator's Manual - Peterbilt Motors Company
Medium Duty Operator's Manual - Peterbilt Motors Company Medium Duty Operator's Manual - Peterbilt Motors Company
Brake System Preventive Maintenance WARNING! Do not operate the vehicle in the event of a malfunction in any air or hydraulic circuit. Such a malfunction may prevent the brake system from operating properly, and could result in an injury accident. The vehicle should not be operated until the system is repaired and both braking circuits, including all pneumatic, hydraulic, and mechanical components are working properly. – 190 – Y53-6008A Medium Duty (R05/09)
Preventive Maintenance Introduction AIR SYSTEM WARNING! Prior to the removal of any air system component, always block and hold the vehicle by a secure means other than the vehicle's own brakes. Depleting air system pressure may cause the vehicle to roll unexpectedly resulting in an accident and/or injuries. Keep hands away from chamber push rods and slack adjusters, they may apply as system pressure drops. •Never connect or disconnect a hose or line containing air pressure. It may whip as air escapes. Never remove a component or pipe plug unless you are certain all system pressure has been depleted. •Never exceed recommended air pressure and always wear safety glasses when working with air pressure. Never look into air jets or direct them at anyone. •Never attempt to disassemble a component until you have read and understood recommended procedures. Some components contain powerful springs and injury or death can result if not properly disassembled. Use only proper tools and observe all precautions pertaining to the use of those tools. Air System • Completely bypassing a Bendix AD-IS air dryer will bypass the system’s pressure protection valves. This could lead to loss of air pressure or damage to the vehicle’s air system, which could cause an accident or personal injury. Always adhere to the manufacturer’s procedure if it is necessary in an emergency to temporarily bypass an AD-IS-series air dryer. WARNING! Do not release the parking brake or attempt to move the vehicle until air pressure in both circuits is at least 100 psi (690 kPa), the level required for normal brake operation. •Do not use the trailer hand brake control to hold vehicle while parked. This control utilizes air pressure for brake application. Because acceptable air leakage levels cause all truck air systems to gradually lose pressure, vehicle rollaway could occur, resulting in an accident and/or injuries. •Always apply the tractor and trailer parking brakes when the vehicle is unattended. Contamination of the air supply system is the major cause of problems in air-operated components such as brake valves, wiper motors, and suspension height control valves. To keep contaminants to the lowest possible level, follow these maintenance procedures. Medium Duty (R05/09) Y53-6008A – 191 –
- 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
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- Page 164 and 165: Maintenance Schedule and Lubricatio
- Page 166 and 167: Maintenance Schedule and Lubricatio
- Page 168 and 169: Maintenance Schedule and Lubricatio
- Page 170 and 171: Engine Maintenance Fuel System Spec
- Page 172 and 173: Engine Maintenance Emission Compone
- Page 174 and 175: Engine Cooling System • The leadi
- Page 176 and 177: Engine Cooling System Topping Off W
- Page 178 and 179: Engine Cooling System Preventive Ma
- Page 180 and 181: Brake System BRAKE SYSTEM If your t
- Page 182 and 183: Brake System • Do not use pressur
- Page 184 and 185: Brake System Constant manual adjust
- Page 186 and 187: Brake System Make sure that the flu
- Page 188 and 189: Brake System Visually inspect brake
- Page 192 and 193: Air System Scheduled Maintenance Ta
- Page 194 and 195: Air System CAUTION: Do not use pene
- Page 196 and 197: Air System CAUTION: When draining t
- Page 198 and 199: Air System High Frequency Vibration
- Page 200 and 201: Tires and Wheels Introduction TIRES
- Page 202 and 203: Tires and Wheels Tire Inflation Mos
- Page 204 and 205: Tires and Wheels Wheel Mounting and
- Page 206 and 207: Tires and Wheels Preventive Mainten
- Page 208 and 209: Tires and Wheels Preventive Mainten
- Page 210 and 211: Tires and Wheels Wheel and Tire Rep
- Page 212 and 213: Heater and Air Conditioner CAUTION:
- Page 214 and 215: Electrical System All the electrica
- Page 216 and 217: Electrical System Overcharge: this
- Page 218 and 219: Electrical System before proceeding
- Page 220 and 221: Electrical System • When fast cha
- Page 222 and 223: Electrical System Electrical and Al
- Page 224 and 225: Cab Maintenance Cleaning, Protectio
- Page 226 and 227: Cab Maintenance At least every spri
- Page 228 and 229: Cab Maintenance • Remove soap wit
- Page 230 and 231: Cab Maintenance Preventive Maintena
- Page 232 and 233: Cab Maintenance Preventive Maintena
- Page 234 and 235: Transmission and Clutch Preventive
- Page 236 and 237: Transmission and Clutch Automatic T
- Page 238 and 239: Steering and Driveline Preventive M
Preventive Maintenance<br />
Introduction<br />
AIR SYSTEM<br />
WARNING! Prior to the removal of any air system<br />
component, always block and hold the vehicle<br />
by a secure means other than the vehicle's own<br />
brakes. Depleting air system pressure may<br />
cause the vehicle to roll unexpectedly resulting<br />
in an accident and/or injuries. Keep hands away<br />
from chamber push rods and slack adjusters,<br />
they may apply as system pressure drops.<br />
•Never connect or disconnect a hose or line containing<br />
air pressure. It may whip as air escapes.<br />
Never remove a component or pipe plug unless<br />
you are certain all system pressure has been<br />
depleted.<br />
•Never exceed recommended air pressure and<br />
always wear safety glasses when working with<br />
air pressure. Never look into air jets or direct<br />
them at anyone.<br />
•Never attempt to disassemble a component<br />
until you have read and understood recommended<br />
procedures. Some components contain<br />
powerful springs and injury or death can result if<br />
not properly disassembled. Use only proper<br />
tools and observe all precautions pertaining to<br />
the use of those tools.<br />
Air System<br />
• Completely bypassing a Bendix AD-IS air dryer will<br />
bypass the system’s pressure protection valves.<br />
This could lead to loss of air pressure or damage to<br />
the vehicle’s air system, which could cause an accident<br />
or personal injury. Always adhere to the manufacturer’s<br />
procedure if it is necessary in an<br />
emergency to temporarily bypass an AD-IS-series air<br />
dryer.<br />
WARNING! Do not release the parking brake or<br />
attempt to move the vehicle until air pressure in<br />
both circuits is at least 100 psi (690 kPa), the<br />
level required for normal brake operation.<br />
•Do not use the trailer hand brake control to hold<br />
vehicle while parked. This control utilizes air<br />
pressure for brake application. Because acceptable<br />
air leakage levels cause all truck air systems<br />
to gradually lose pressure, vehicle<br />
rollaway could occur, resulting in an accident<br />
and/or injuries.<br />
•Always apply the tractor and trailer parking<br />
brakes when the vehicle is unattended.<br />
Contamination of the air supply system is the major cause of<br />
problems in air-operated components such as brake valves,<br />
wiper motors, and suspension height control valves. To keep<br />
contaminants to the lowest possible level, follow these maintenance<br />
procedures.<br />
<strong>Medium</strong> <strong>Duty</strong> (R05/09) Y53-6008A – 191 –