SAFETY SAFETY MAINTENANCE INFORMATION REMOVING BATTERY TERMINALS When repairing the electrical system or when carrying out electrical welding, remove the negative (-) terminal of the battery to prevent the flow of current. SAFETY FIRST WHEN USING HIGH-PRESSURE GREASE TO ADJUST TRACK TENSION q Grease is pumped into the track tension adjustment system under high pressure. If the specified procedure for maintenance is not followed when making adjustment, grease drain plug (1) may fly out and cause serious injury or property damage. q When loosening grease drain plug (1) to loosen the track ten- sion, never loosen it more than one turn. Loosen the grease drain plug slowly.
q Never put your face, hands, feet, or any other part of your body close to grease drain plug (1). DO NOT DISASSEMBLE RECOIL SPRINGS Never attempt to disassemble the recoils spring assembly. It contains a spring under high pressure which serves as a shock absorber for the idler. If it is disassembled by mistake, the spring will fly out and cause serious injury. When it becomes necessary to disassemble it, ask your Komatsu distributor to do the work. SAFETY RULES FOR HIGH-PRESSURE OIL The hydraulic system is always under internal pressure. When inspecting or replacing piping or hoses, always check that the pressure in the hydraulic circuit has been released.
If the circuit is still under pressure, it will lead to serious injury, so always do as follows. q For details of the method of releasing the pressure, see "METHOD FOR RELEASING INTERNAL PRES- SURE IN HYDRAULIC CIRCUIT (4-40)". If the circuit is still under pressure, do not carry out any inspection or replacement operation. q If there is any leakage from the piping or hoses, the surrounding area will be wet, so check for cracks in the piping and hoses and for swelling in the hoses. When carry out inspection, wear safety glasses and leather gloves.
q There is a hazard that high-pressure oil leaking from small holes may penetrate your skin or cause blindness if it con- tacts your eyes directly. If you are hit by a jet of high-pressure oil and suffer injury to your skin or eyes, wash the place with clean water, and consult a doctor immediately for medical attention. 2-39