Komatsu WA270-3H Operation & Maintenance Manual page 6

Contents
ADJUSTING THE STEERING COLUMN .................................................................................... 2-39
SWITCHING THE ENGINE ON AND OFF ....................................................................................... 2-40
BEFORE STARTING THE ENGINE............................................................................................. 2-40
STARTING THE ENGINE ............................................................................................................ 2-41
AFTER STARTING THE ENGINE ............................................................................................... 2-42
SWITCHING OFF THE ENGINE ................................................................................................. 2-43
AFTER MACHINE OPERATION ....................................................................................................... 2-43
DRIVING .......................................................................................................................................... 2-44
START-UP ................................................................................................................................... 2-44
STARTING UP ON HILLS AND SLOPES .................................................................................... 2-45
GEAR SHIFTING ............................................................................................................................. 2-46
GEAR SELECTION ..................................................................................................................... 2-46
AUTOMATIC GEAR-SHIFT ......................................................................................................... 2-46
KICK-DOWN FUNCTION ............................................................................................................ 2-46
CHANGING THE DRIVING DIRECTION ......................................................................................... 2-48
STEERING AND TURNING .............................................................................................................. 2-48
STOPPING ....................................................................................................................................... 2-49
PARKING THE MACHINE ON SLOPES ..................................................................................... 2-49
CONTROL LEVERS FOR THE WORK HYDRAULIC SYSTEM ....................................................... 2-50
CONTROL LEVER FOR THE WORK UNIT ................................................................................ 2-50
MULTIFUNCTIONAL LEVER FOR THE WORK HYDRAULIC SYSTEM .......................................... 2-51
CONTROL LEVER FOR SPECIAL EQUIPMENT ....................................................................... 2-51
WORKING WITH THE MACHINE .................................................................................................... 2-52
EXCAVATING ............................................................................................................................... 2-52
LEVELLING ................................................................................................................................. 2-54
DOZING ...................................................................................................................................... 2-54
LOADING AND TRANSPORTING ............................................................................................... 2-54
LOADING .................................................................................................................................... 2-55
LOADING IN DIAGONAL DIRECTION ....................................................................................... 2-55
V-SHAPED LOADING ................................................................................................................. 2-55
ADJUSTING THE WORK UNIT ....................................................................................................... 2-56
LIFT LIMIT SWITCH ................................................................................................................... 2-56
BUCKET RETURN MECHANISM ............................................................................................... 2-57
BUCKET LEVEL INDICATOR ...................................................................................................... 2-57
PRECAUTIONS FOR SPECIAL OPERATIONS ............................................................................... 2-58
WORKING IN WATER ................................................................................................................. 2-58
IF THE WHEEL BRAKE BREAKS DOWN .................................................................................. 2-58
TURNING ON SLOPES, DAMS OR HILLS ................................................................................. 2-58
BRAKING ON SLOPES .............................................................................................................. 2-58
IF THE ENGINE BREAKS DOWN .............................................................................................. 2-58
TYRES ............................................................................................................................................. 2-59
HOW TO HANDLE TYRES ......................................................................................................... 2-59
TYRE AIR PRESSURE ................................................................................................................ 2-59
VISUAL INSPECTION ................................................................................................................. 2-59
DRIVING LONGER DISTANCES ................................................................................................ 2-60
TYRES AND TYRE PRESSURES .................................................................................................... 2-60
WINTER OPERATION ..................................................................................................................... 2-62
BEFORE THE COLD SEASON ................................................................................................... 2-62
AFTER OPERATION ................................................................................................................... 2-63
AFTER THE COLD SEASON ...................................................................................................... 2-63
LONG-TERM SHUTDOWN ............................................................................................................. 2-64
PRIOR TO SHUTDOWN ............................................................................................................. 2-64
DURING SHUTDOWN ................................................................................................................ 2-64
AFTER THE SHUTDOWN .......................................................................................................... 2-64
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