The additional lamps switch is used to turn on the cab front
lamps, cab rear lamps and extra boom lamps (If fitted by cus-
tomer)
(a) ON
Lamps light up.
(b) OFF
Lamps go out.
MACHINE PUSH-UP SWITCH
Machine push-up switch is used to set the safety valve pres-
sure on the head side of the boom circuit to 2 stages.
(a) Low-pressure set
Since the bracing force of the boom is decreased, the machine
is less moved up during digging work and the operator can dig
smoothly.
Use this position for the general normal operation for ordinary
soil, soft rocks, blasted rocks, etc.
(b) High-pressure set
Since the bracing force of the boom is increased, the machine
can easily escape from soft ground.
CONTROL LEVERS AND PEDALS
(1) Lock lever
(2) Travel levers (with pedal and auto-deceleration
system)
(3) L.H. work equipment control lever (with auto-decel-
eration system)
(4) R.H. work equipment control lever (with auto-de-
celeration system)
EXPLANATION OF COMPONENTS
OPERATION
3-98
Содержание PC490-11
Страница 2: ......
Страница 25: ...LOCATION OF SAFETY LABELS a b c d e f g h KS000848 T T SAFETY SAFETY LABELS 2 5...
Страница 48: ...Map with mirror and rear view camera visibility aids fitted PRECAUTIONS FOR OPERATION SAFETY 2 28...
Страница 72: ......
Страница 73: ...OPERATION Please read and make sure that you understand the SAFETY section before reading this section 3 1...
Страница 340: ......
Страница 341: ...MAINTENANCE Please read and make sure that you understand the SAFETY section before reading this section 4 1...
Страница 421: ...SPECIFICATIONS 5 1...
Страница 425: ...6 7m Boom PC490 11 SPECIFICATIONS SPECIFICATIONS 5 5...
Страница 426: ...6 7m Boom PC490LC 11 SPECIFICATIONS SPECIFICATIONS 5 6...
Страница 428: ...7 1m Boom PC490 11 SPECIFICATIONS SPECIFICATIONS 5 8...
Страница 429: ...7 1m Boom PC490LC 11 SPECIFICATIONS SPECIFICATIONS 5 9...
Страница 430: ......
Страница 474: ......
Страница 475: ...REPLACEMENT PARTS 7 1...
Страница 491: ......
Страница 492: ...PC490 11 PC490LC 11 HYDRAULIC EXCAVATOR Form No UENAM01105 2016 KOMATSU All Rights Reserved Printed in Belgium 11 2016...