4.2 Outlines of service Maintenance Outline of electric system Biodegradable hydraulic oil and lubricants The use of biodegradable hydraulic oils and lubricants - on the basis of synthetic esters - for KOMATSU machines is permitted. For information on the products cleared for use and best suited for your application contact our authorized service workshops. 4.2.2 Outline of electric system z 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. z 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. z Never install any electric components other than those spec- ified by KOMATSU. z 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. z When working at the seashore, carefully clean the electric system to prevent corrosion.
z The optional power source must never be connected to the fuse, starting switch, or battery relay. WA150-5H – VEAM934100 4-9