Kenworth T680 - Page 2

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Table of Contents4
Applies to8
Using this Manual9
Safety Messages and Notes9
Illustrations10
General Safety Instructions10
California Proposition 65 Warning13
Data Recorder13
Environmental Protection Agency13
Repairs14
Additional Sources of Information15
Cab Access15
Deckplate Access17
How to Open the Hood18
Close the Hood20
Seat21
Seat Belts24
Tether Belts27
Komfort Latch Feature28
Sleeper Bunks and Restraints29
What to Do before Starting the Vehicle33
Safe Vehicle Operation33
Emergency Equipment34
Drivers Checklist34
Vehicle Loading35
Visual Inspection While Approaching the Vehicle37
Daily Checks37
Cab Interior38
Weekly Checks39
Systems Check39
Emergency42
EMERGENCY - Roadside Assistance43
Low Air Actions43
Low Oil Pressure43
Stop Engine44
Engine Is Overheating44
How to Inspect and Replace a Fuse46
Blown Fuse47
Where Are the Fuses Located47
How to Jump Start a Battery47
How to Recover a Vehicle49
Instrument Cluster62
Digital Display Controls63
Digital Display64
Outside Air Temperature65
Trip Odometer66
Selecting a View67
Basic View69
Menu Configurations72
Shutdown Timer73
Truck Information77
Drive Summary77
Driver Rewards (Option)78
Driver Performance Assistant (Option)79
Bulb Check79
Audible Alarm79
Notifications79
Warning Lights and Indicators80
Antilock Brake System (ABS)86
Traction Control87
Park Brake88
Cruise Control88
Diesel Particulate Filter (DPF)89
Malfunction Indicator Lamp (MIL)90
Engine, Overspeed91
Stop Engine91
Malfunction Indicator Light (MIL)94
Transmission, Failure95
Optional Gauges95
Manifold Pressure Gauge96
Steering Wheel Controls96
Steering Column Controls97
Dash Switches102
Engine Heater114
Fifth Wheel Slide115
Fuel Heater115
Ignition Key Switch116
Pintle Hook120
Controls123
Door-Mounted Mirror Controls123
Power Mirror Switch124
Power Window Switch124
Digital Mirror System124
Adjust Display Brightness136
Heating and Air Conditioning (AC)141
Air Conditioner Controls142
Semi-Automatic Mode145
Economy Function145
Air Dehumidification148
Sleeper Alarm Clock149
Cab Accessories150
Radio (Option)150
Cigarette Lighter and Ashtray (Option)150
Glove Box151
Driving156
Starting and Operating157
Engine Warm up160
Engine Operations163
Speed Limit163
Engine Brake Operation164
Driver Assistance167
Cruise Control Indicator170
Troubleshooting177
Engine Fan Control185
Lighting186
Dome Light187
Hazard Lights187
Marker Lights188
Transmission188
Automated Transmissions191
Auto-Neutral193
Automatic Transmissions194
Auxiliary Transmission195
Brakes195
Air Brake System195
Parking Brake196
Automatic Traction Control196
Axle and Suspension206
Differential Lock206
Dual Range (Two-Speed) Rear Axle206
Trailer Operations212
Driving Tips and Techniques216
Descending a Grade217
Fuel Consumption218
General Condition218
What to Consider When Using a Sleeper Bunk219
Stopping the Vehicle220
Final Stopping Procedures221
New Vehicle Maintenance Schedule227
First Day227
First 50-100 MI / 80-160 Km227
First 500 MI / 800 Km227
First 2,000 MI / 3,218 Km228
First 3,000-5,000 MI / 4,800-8,000 Km229
Maintenance Schedule229
At First 15,000 MI / 24,000 Km or at First PM231
Component Specific Intervals235
Every 15,000 MI / 24,000 Km / Monthly238
Every 25,000 MI / 40,000 Km / 6 Months244
Every 30,000 MI / 48,000 Km244
Every 60,000 MI / 96,000 Km / 6 Months250
Every 120,000 MI / 192,000 Km / Annually256
Every 240,000 MI / 384,000 Km262
Every 300,000 MI / 480,000 Km / 6,750 Hours / 3 Years262
Every 500,000 MI / 800,000 Km / 5 Years263
Every 750,000 MI / 1,200,000 Km/ 24,000 Hours / 8 Years264
Air System264
Daily Checks266
Air Compressor268
Preventive Maintenance268
Air Dryer Maintenance269
Air Tanks270
Axles and Suspensions271
Suspension Lubrication272
Wheel Alignment272
Visual Inspection275
Rear Suspension Fasteners275
Rear Axle Lubrication276
Rear Axle Alignment276
Eaton/Dana Axle Lubrication276
Meritor Axle Lubrication277
Brake System279
Cab Maintenance282
Vehicle Cleaning282
Clutch287
Hydraulic Clutch287
Clutch Adjustment288
Cooling System Maintenance288
Maintenance288
Driveline294
Driver Assistance Maintenance295
Electrical System296
Battery Charging300
Removing Batteries301
Installing Batteries301
Remote Keyless Entry303
Engine Maintenance304
Topping up the Engine Oil306
Engine Fan308
Lubricating System309
Replace Engine Air Filter310
Air Filter Restriction Indicator (Option)312
Exhaust System312
Engine Mounting312
Frame313
Fuel System314
Fuel Filters315
Heater and Air Conditioner Maintenance315
Special Precautions315
Air Conditioner316
Lighting317
Final Checks320
Lubricants320
Noise and Emission Control322
Noise Control System - Maintenance Log324
Seating and Restraints326
Safety Restraint System - Inspection326
Inspection Guidelines327
Steering System328
Tires331
Matching Tires333
Replacing Tires333
Tire Chains333
Transmission Maintenance334
Allison Transmission Lubrication334
Wheels334
Wheel Replacement with Disc Brake Option335
Disc Wheels336
Wheel Bearings336
Windshield Wiper/Washer337
Specification Reference Charts337
Light Bulb Specifications345
Over-The-Air (OTA) Software Updates346
Information348
Consumer Information349
Vehicle Identification Labels349
Chassis Number350
Certification Labels350
Tire, Rim and Weight Rating Data Label350
Federal Safety Standard Certification Label351
Component Identification351
Clean Idle352
Greenhouse Gas Certified Configuration353
Vehicle Emissions Limited Express Warranty356
Replacement Parts358
PACCAR Responsibilities358
Warranty Limitations358
Telematics Control Unit FCC Information359
General Information359
Canada-Specific Information361
High Beams365
Transmission Modes368
Warning Lights369

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