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Komatsu A12001 Shop Manual page 13

Hydraulic excavator

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00 INDEX AND FOREWORD
E-49 BOOM LOWER INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION .
................................................................................................................................................40-1026
E-50 ARM OUT INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION..........
................................................................................................................................................40-1027
E-51 ARM IN INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION 40-1028
E-52 BUCKET DUMP INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION
................................................................................................................................................40-1029
E-53 BUCKET CURL INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION .
................................................................................................................................................40-1030
E-54 SWING INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION.40-1031
E-55 TRAVEL INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION40-1032
E-56 SERVICE INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION ..........
................................................................................................................................................40-1033
E-57 ATTACHMENT HYDRAULIC CIRCUIT CANNOT BE CHANGED.......................................40-1035
E-58 KOMTRAX SYSTEM DOES NOT OPERATE NORMALLY .................................................40-1036
TROUBLESHOOTING FOR HYDRAULIC AND MECHANICAL SYSTEMS (H MODE) .....................40-1037
INFORMATION MENTIONED IN TROUBLESHOOTING TABLE (H MODE)...............................40-1037
SYSTEM CHART OF HYDRAULIC AND MECHANICAL SYSTEMS ..........................................40-1038
FAILURE MODE AND CAUSE TABLE........................................................................................40-1040
H-1 ALL OF WORK EQUIPMENTS, SWING AND TRAVEL OPERATION LACK SPEED OR POWER. ..
................................................................................................................................................40-1052
H-2 ENGINE SPEED LOWERS SIGNIFICANTLY OR ENGINE STALLS ....................................40-1055
H-3 ANY OF WORK EQUIPMENT, SWING AND TRAVEL DOES NOT WORK ..........................40-1057
H-4 UNUSUAL SOUND IS HEARD FROM AROUND HYDRAULIC PUMP ................................40-1058
H-5 FINE CONTROL PERFORMANCE OR RESPONSE IS POOR............................................40-1059
H-6 SPEED OR POWER OF BOOM IS LOW .............................................................................40-1060
H-7 SPEED OR POWER OF ARM IS LOW ................................................................................40-1064
H-8 SPEED OR POWER OF BUCKET IS LOW..........................................................................40-1069
H-9 WORK EQUIPMENT DOES NOT MOVE IN SINGLE OPERATION .....................................40-1072
H-10 HYDRAULIC DRIFT OF BOOM IS LARGE ........................................................................40-1073
H-11 HYDRAULIC DRIFT OF ARM IS LARGE ...........................................................................40-1075
H-12 HYDRAULIC DRIFT OF BUCKET IS LARGE.....................................................................40-1077
H-13 OTHER WORK EQUIPMENT MOVES WHEN ONE OF WORK EQUIPMENT IS RELIEVED .........
................................................................................................................................................40-1078
H-14 IN COMBINED OPERATION OF WORK EQUIPMENT , EQUIPMENT HAVING HEAVIER LOAD
MOVES SLOWER. ..................................................................................................................40-1079
H-15 TIME LAG OF WORK EQUIPMENT IS LARGE .................................................................40-1080
H-16 MACHINE DOES NOT TRAVEL STRAIGHT ......................................................................40-1081
H-17 MACHINE IS HARD TO STEER OR TRAVEL POWER IS LOW ........................................40-1083
H-18 TRAVEL SPEED IS LOW ...................................................................................................40-1086
H-19 ONE OF TRACKS DOES NOT RUN ..................................................................................40-1088
H-20 TRAVEL SPEED DOES NOT CHANGE, OR TRAVEL SPEED IS TOO LOW OR HIGH ....40-1089
H-21 UPPER STRUCTURE DOES NOT SWING IN BOTH RIGHT AND LEFT DIRECTIONS....40-1090
H-22 UPPER STRUCTURE DOES NOT SWING IN ONLY ONE DIRECTION............................40-1091
H-23 SWING ACCELERATION OR SWING SPEED OF UPPER STRUCTURE IS LOW IN BOTH
RIGHT AND LEFT DIRECTIONS ............................................................................................40-1092
H-24 SWING ACCELERATION OR SWING SPEED IS LOW IN ONLY ONE DIRECTION .........40-1093
H-25 OVERRUN OF UPPER STRUCTURE IS LARGE IN BOTH RIGHT AND LEFT DIRECTIONS .......
................................................................................................................................................40-1094
H-26 UPPER STRUCTURE OVERRUNS EXCESSIVELY WHEN IT STOPS SWING IN ONLY ONE DI-
RECTION ................................................................................................................................40-1095
H-27 SHOCK IS LARGE WHEN UPPER STRUCTURE STOPS SWINGING .............................40-1096
H-28 LARGE UNUSUAL NOISE IS HEARD WHEN UPPER STRUCTURE STOPS SWINGING40-1097
H-29 SWING DRIFT ON A SLOPE IS LARGE (WHILE SWING PARKING BRAKE IS APPLIED)40-1098
H-30 SWING DRIFT ON A SLOPE IS LARGE (WHILE SWING PARKING BRAKE IS RELEASED)........
................................................................................................................................................40-1099
H-31 TRAVEL SPEED DROPS LARGELY IN COMBINED OPERATION OF SWING AND TRAVE .........
................................................................................................................................................40-1100
PC210LC-11
INDEX
00-13

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