Komatsu WA500-6H, Operation & Maintenance Manual, Page: 117 / 412

Operation 3.2 Explanation of components
WA500-6H – VEAM430100
3-51
8. E.C.S.S. switch
(Option)
(*) E.C.S.S.: Electrically Controlled Suspension System
WARNING
z If the machine is traveling or the work equipment is raised,
the moment the E.C.S.S. switch is turned ON, the work
equipment will move.
z If the E.C.S.S. system is switched on, the work equipment
may move.
z Never turn the E.C.S.S. switch ON during inspection or
maintenance. The work equipment will move and this will
create a dangerous situation.
NOTE
z
Always stop the machine and lower the work equipment to
the ground before operating the E.C.S.S. switch.
z
When carrying out inspection and maintenance, first lower
the work equipment to the ground, then turn the E.C.S.S.
switch OFF before starting the inspection and maintenance
operation.
z
When carrying out leveling work, turn the E.C.S.S. switch
OFF.
REMARK
The E.C.S.S. is a device that uses the hydraulic spring effect of
an accumulator to absorb the vibration of the chassis during
travel and allows the machine to travel smoothly and at high
speed.
When traveling in 1st, the E.C.S.S. is not actuated.
When the speed range is 2nd to 4th, and the travel speed
becomes more than 5 km/h (3.1 MPH), the E.C.S.S. is automati-
cally actuated; when the travel speed goes below 3 km/h (1.9
MPH), it is automatically disengaged.
This switch (8) is used to turn the E.C.S.S. ON and OFF.
Position (a): ON
The pilot lamp inside the switch lights up and the E.C.S.S. is
actuated.
Position (b): OFF
The E.C.S.S. is not actuated.
GK050054
a b