Komatsu D31EX-21, Operation & Maintenance Manual, Page: 14 / 256

CONTENTS
1-12
ADJUSTMENT................................................................................................................................. 3-72
OPERATION AND CHECK BEFORE STARTING ENGINE............................................................ 3-75
STARTING ENGINE ................................................................................................................................. 3-77
NORMAL STARTING ...................................................................................................................... 3-77
STARTING IN COLD WEATHER .................................................................................................... 3-79
OPERATIONS AND CHECKS AFTER STARTING ENGINE ................................................................... 3-81
BREAKING IN THE NEW MACHINE .............................................................................................. 3-81
WARMING UP OPERATIONS ........................................................................................................ 3-81
STARTING IN COLD WEATHER .................................................................................................... 3-82
STOPPING ENGINE................................................................................................................................. 3-84
MACHINE OPERATION ........................................................................................................................... 3-85
MOVING MACHINE......................................................................................................................... 3-85
STOPPING MACHINE..................................................................................................................... 3-88
SHIFTING GEARS.................................................................................................................................... 3-89
SHIFTING BETWEEN FORWARD AND REVERSE ................................................................................ 3-90
STEERING MACHINE .............................................................................................................................. 3-91
NORMAL TURNING ........................................................................................................................ 3-91
TURNING WHILE DESCENDING A SLOPE................................................................................... 3-92
PRECAUTIONS FOR OPERATION ......................................................................................................... 3-93
PAY ATTENTION TO GAUGES ...................................................................................................... 3-93
PERMISSIBLE WATER DEPTH...................................................................................................... 3-93
METHOD OF USING BRAKES ....................................................................................................... 3-93
PRECAUTIONS WHEN TRAVELING UP OR DOWN HILLS.......................................................... 3-93
PRECAUTIONS ON SLOPES ......................................................................................................... 3-94
IT IS PROHIBITED TO KEEP THE DOOR OPEN DURING OPERATIONS................................... 3-94
IT IS PROHIBITED TO MODIFY THE CAB GLASS IN ANY WAY THAT WILL OBSTRUCT THE VIEW
3-94
PRECAUTIONS FOR BLIND SPOTS CAUSED BY CAB STAY ..................................................... 3-94
WORK POSSIBLE USING BULLDOZER ................................................................................................. 3-95
DOZING........................................................................................................................................... 3-95
SMOOTHING................................................................................................................................... 3-95
CUTTING INTO HARD OR FROZEN GROUND OR DITCHING .................................................... 3-96
FELLING TREES, REMOVING STUMPS ....................................................................................... 3-96
SIDE-CUTTING OPERATIONS....................................................................................................... 3-96
PARKING MACHINE ................................................................................................................................ 3-97
CHECK AFTER FINISHING WORK ......................................................................................................... 3-98
BEFORE STARTING ENGINE ........................................................................................................ 3-98
AFTER STARTING ENGINE ........................................................................................................... 3-98
LOCKING.................................................................................................................................................. 3-99
TIPS FOR LONGER UNDERCARRIAGE LIFE ...................................................................................... 3-100
OPERATION METHOD ................................................................................................................. 3-100
INSPECTION AND ADJUSTMENT ............................................................................................... 3-100
INSPECTION AND REPAIR.......................................................................................................... 3-101