4.2 Outlines of service
Maintenance Outline of electric system
WA470-6H – VEAM946100 4-13
4.2.2 Outline of electric system
! It is extremely dangerous if the electrical equipment
becomes wet or the covering of the wiring is damaged. This
will cause an electrical short circuit and may lead to malfunc-
tion of the machine. Do not wash the inside of the operator's
cab with water. When washing the machine, be careful not to
let water get into the electrical components.
! Service relating to the electric system is checking fan belt
tension, checking damage or wear in the fan belt and check-
ing battery fluid level.
! Never install any electric components other than those spec-
ified by KOMATSU.
! External electro-magnetic interference may cause malfunc-
tion of the control system controller, so before installing a
radio receiver or other wireless equipment, please contact
your KOMATSU distributor.
! When working at the seashore, carefully clean the electric
system to prevent corrosion.
! The optional power source must never be connected to the
fuse, starting switch, or battery relay.
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