Medium Duty Operator's Manual - Peterbilt Motors Company
Medium Duty Operator's Manual - Peterbilt Motors Company Medium Duty Operator's Manual - Peterbilt Motors Company
Transmission and Clutch Preventive Maintenance Table 9 Transmission Lubrication — Manual transmissions MODEL RECOMMENDED LUBRICANT (See Note) AMBIENT TEMPERATURE RANGE DEG. C DEG. F VISCOSITY (SAE) Eaton-Fuller HD engine oil: API CE or CF-4. Above -12 Above +10 50 Synthetic oil: Chevron RPM Synthetic Transmission Fluid, or equal, meeting MIL-L-2104D and Eaton PS-081 specifications. Above -40 Above -40 50 NOTE: Do not use multi-viscosity or EP (extreme pressure) gear oil (e.g., axle oils) in transmissions. Multi-viscosity or EP oils may damage components. Standard Transmission Oil Level NOTE: The vehicle must be parked on level ground. • Maintain the oil level and check it regularly. Oil should be up to bottom of filler plug hole. Clutch System Introduction Free pedal is the distance the clutch pedal moves by applying only slight pressure. During free pedal the release yoke in the transmission moves until its bearing pads contact the release bearing. This movement of the release yoke is called free travel. Thus, free pedal and free travel are directly related to each other. – 234 – Y53-6008A Medium Duty (R05/09)
Preventive Maintenance As the clutch pedal is depressed further, with harder pressure, the release yoke moves the release bearing away from the engine. This causes the clutch plate to release from the driven disks in the clutch. This is called release travel. And finally, on 9-, 10-, and 11-speed transmissions, as the pedal is pushed to the last 1/2 to 1 inch of travel, the release bearing contacts and engages the clutch brake. This is called clutch brake squeeze. When the clutch wears, the release bearing gradually moves toward the engine, decreasing free pedal and free travel. When all free pedal and free travel are gone, the clutch requires adjustment. The clutch is adjusted by turning an adjustment ring that is built into the clutch. When the ring is turned, the release bearing moves back toward the transmission, restoring free pedal and clutch free travel. Under normal clutch wear this is the only adjustment needed. Do not attempt to change any other component. See the Medium Duty Maintenance Manual for details. Clutch Adjustment — Normal Wear Transmission and Clutch Clutch pedal free travel is usually 1 3/4 in. to 2 in. (34 to 51 mm). This should be your guide for determining whether your truck needs clutch adjustment. Also, if it becomes increasingly difficult to shift into gears, or the truck creeps with the clutch pedal depressed, your clutch needs adjustment. See the Medium Duty Maintenance Manual for the proper adjustment procedures. Some vehicles have automatic clutch adjustment. If yours doesn't have this feature, adjustment will have to be done by a trained certified mechanic. Have the adjustment done before clutch pedal free travel is reduced to the minimum allowable 1/2 in. (13mm). Clutch Linkage The Medium Duty is equipped with a rod and lever mechanical clutch linkage. Lubricate each pivot point on the clutch linkage. Medium Duty (R05/09) Y53-6008A – 235 –
- 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 190 and 191: Brake System Preventive Maintenance
- 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 236 and 237: Transmission and Clutch Automatic T
- Page 238 and 239: Steering and Driveline Preventive M
- Page 240 and 241: Front Axle and Suspension Preventiv
- Page 242 and 243: Front Axle and Suspension Torque CA
- Page 244 and 245: Rear Axle and Suspension It is impo
- Page 246 and 247: Rear Axle and Suspension Preventive
- Page 248 and 249: Rear Axle and Suspension Grade 8 Ca
- Page 250 and 251: Frame and Fifth Wheel Fifth Wheel M
- Page 252 and 253: Noise and Emission Control Engine
- Page 254 and 255: Noise and Emission Control Transmis
- Page 256 and 257: Noise and Emission Control Preventi
- Page 258 and 259: Consumer Information and Vehicle Id
- Page 260 and 261: Consumer Information and Vehicle Id
- Page 262 and 263: Consumer Information and Vehicle Id
- Page 264 and 265: INDEX INDEX A Accessories 70 Air co
- Page 266 and 267: INDEX Cooling system conventional c
- Page 268 and 269: INDEX G Gauges and Displays 35 Driv
- Page 270 and 271: INDEX use 62, 88, 97, 121, 143, 146
- Page 272 and 273: INDEX U U-Bolt torque 242 Underbody
- Page 274: Y53-6008A 06/09 Printed in the U.S.
Transmission and Clutch<br />
Preventive Maintenance<br />
Table 9<br />
Transmission Lubrication — <strong>Manual</strong> transmissions<br />
MODEL<br />
RECOMMENDED<br />
LUBRICANT (See Note)<br />
AMBIENT<br />
TEMPERATURE RANGE<br />
DEG. C<br />
DEG. F<br />
VISCOSITY (SAE)<br />
Eaton-Fuller HD engine oil: API CE or CF-4. Above -12 Above +10 50<br />
Synthetic oil: Chevron RPM<br />
Synthetic Transmission Fluid, or equal,<br />
meeting MIL-L-2104D and Eaton PS-081<br />
specifications.<br />
Above -40 Above -40 50<br />
NOTE: Do not use multi-viscosity or EP (extreme pressure) gear oil (e.g., axle oils) in transmissions. Multi-viscosity or EP oils may damage<br />
components.<br />
Standard Transmission Oil Level<br />
NOTE: The vehicle must be parked on level ground.<br />
• Maintain the oil level and check it regularly. Oil should be<br />
up to bottom of filler plug hole.<br />
Clutch System Introduction<br />
Free pedal is the distance the clutch pedal moves by applying<br />
only slight pressure. During free pedal the release yoke in the<br />
transmission moves until its bearing pads contact the release<br />
bearing. This movement of the release yoke is called free<br />
travel. Thus, free pedal and free travel are directly related to<br />
each other.<br />
– 234 – Y53-6008A <strong>Medium</strong> <strong>Duty</strong> (R05/09)