CRUISE AND ENGINE SPEED CONTROL.....................................................................109 Cruise Control..................................................................................................................109 Engine Speed Control ......................................................................................................114 BRAKE OPERATION.........................................................................................................117 Air Brake System.............................................................................................................117 Automatic Slack Adjusters ..............................................................................................118 Parking Brake System......................................................................................................118 Parking.............................................................................................................................119 Anti-Lock Brake System (ABS)......................................................................................120 Automatic Traction Control (ATC) (If Equipped)...........................................................125 GOOD DRIVING HABITS.................................................................................................125 Weight Ratings.................................................................................................................125 Instruments.......................................................................................................................125 Shutting Down the Engine...............................................................................................126 General Observation ........................................................................................................126 STARTING THE VEHICLE ...............................................................................................126 General Information.........................................................................................................126 Starting MP Engines ........................................................................................................127 Engine Warm-Up .............................................................................................................129 Engine Idling....................................................................................................................130 Shutting Down the Engine...............................................................................................130 COLD WEATHER OPERATION .......................................................................................132 Cold Weather Starting Tips..............................................................................................132 COUPLING A TRAILER....................................................................................................133 UNCOUPLING A TRAILER..............................................................................................134 MOVING THE VEHICLE — GENERAL INFORMATION.............................................136 Braking.............................................................................................................................136 Shifting.............................................................................................................................136 Engine Temperature.........................................................................................................137 Clutch (If Equipped) ........................................................................................................138 POWER TAKE-OFF (PTO) OPERATION .........................................................................140 PTO Precautions ..............................................................................................................140 PTO Classification ...........................................................................................................141 Side-Mounted PTO Locations .........................................................................................141 PTO Operating Procedures ..............................................................................................141 TRANSMISSION SHIFTING INSTRUCTIONS...............................................................142 Shifting Instructions for Allison Automatic Transmissions ............................................142 Shifting Instructions for mDRIVE Transmissions...........................................................142 MACK T310 Shifting Instructions ..................................................................................143 MACK T310M, T310ME and T310MLR Shifting Instructions .....................................146 MACK T318, T318L and T318LR Shifting Instructions................................................150 MACK T31821, T318L21 and T318LR21 Shifting Instructions....................................156 AXLES.................................................................................................................................162 Rear Axles Other Than MACK .......................................................................................162 MACK Rear Axles...........................................................................................................162