SEAT ADJUSTMENT...............................................................................................106 Right-Side Folding Seat.........................................................................................106 Air Seat ..................................................................................................................107 MIRROR SYSTEMS.................................................................................................109 Moto Mirror System ..............................................................................................109 MACK ENGINE INFORMATION...........................................................................112 Precautions and Warnings......................................................................................112 Engine Model Designations...................................................................................113 CRUISE CONTROL OPERATION ..........................................................................114 Speed Control Switches.........................................................................................114 Disengaging Cruise Control...................................................................................115 MACK POWERLEASH™ENGINE BRAKE (IF EQUIPPED)..............................116 Engine Brake Switch..............................................................................................117 How the Engine Brake is Activated.......................................................................117 Cruise Control with the MACK PowerLeash™Engine Brake .............................118 ON THE ROAD WITH THE MACK POWERLEASH™ENGINE BRAKE .........119 Over Flat Terrain....................................................................................................119 Descending a Grade...............................................................................................120 On Slippery Road Surfaces....................................................................................122 BRAKE OPERATION...............................................................................................124 Air Brake System...................................................................................................124 Automatic Slack Adjusters ....................................................................................125 Parking Brake System............................................................................................125 Parking Brake Operation........................................................................................126 Parking...................................................................................................................126 Anti-Lock Brake System (ABS)............................................................................127 Automatic Traction Control (ATC) (If Equipped).................................................130 Work Brake System ...............................................................................................131 GOOD DRIVING HABITS.......................................................................................133 Weight Ratings.......................................................................................................133 Instruments.............................................................................................................133 Shutting Down the Engine.....................................................................................133 General Observation ..............................................................................................133 STARTING THE VEHICLE .....................................................................................134 General Information...............................................................................................134 Push Button Starters...............................................................................................134 Air Starters.............................................................................................................135 Engine Warm-Up ...................................................................................................138 Engine Idling..........................................................................................................138 Shutting Down the Engine.....................................................................................139 COLD WEATHER OPERATION .............................................................................141 Cold Weather Starting Tips....................................................................................141 Engine Block Heaters ............................................................................................142 MOVING THE VEHICLE — GENERAL INFORMATION...................................143 Braking...................................................................................................................143 Engine Temperature...............................................................................................143 TRANSMISSION SHIFTING INSTRUCTIONS.....................................................145