¤ WARNING: Failure to follow these safety precautions may lead to a serious accident. 8. PRECAUTIONS FOR MAINTENANCE 1-27 PRECAUTIONS WHEN USING HIGH-PRESSURE GREASE TO ADJUST TRACK TENSION ‡ Grease is pumped into the track tension adjustment system under high pressure. If the specified procedure for maintenance is not followed when making adjustment, plug 1 may fly out and cause damage or personal injury. ‡ When loosening grease drain plug 1, never loosen it more than one turn. ‡ Never put your face, hands, feet, or any other part of your body directly in front of any grease drain valve. Adjusting track tension © See “24.2 WHEN REQUIRED”.
A0055200 HANDLING HIGH-PRESSURE HO SES ‡ If oil or fuel leaks from high-pressure hoses, it may cause fire or defective operation, which may lead to personal injury or damage. If any damaged hoses or loose bolts are found, stop work and contact your Komatsu distributor for repairs. ‡ Replacing high-pressure hoses requires a high level of skill, and the torque is determined according to the type of hose and size, so please do not carry out replacement yourself. Ask your Komatsu distributor to carry out replacement. PRECAUTIONS WITH HIGH-PRESSURE OIL When inspecting or replacing high-pressure 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 or damage, so always do as follows. ‡ For details of the method of releasing the pressure, see “8.1 BEFORE CARRYING OUT MAINTE- NANCE, STOP ENGINE BEFORE CARRYING OUT INSPECTION AND MAINTENANCE”. Never carry out inspection or replacement before releasing the pressure completely. ‡ Wear safety glasses and leather gloves. ‡ If there is any leakage from the piping or hoses, the piping, hoses, and the surrounding area will be wet, so check for cracks in the piping and hoses and for swelling in the hoses. If it is difficult to locate the leakage, always please contact your Komatsu distributor for repairs.
‡ If you are hit by a jet of high-pressure oil, consult a doctor immediately for medical attention. INCORRECT CORRECT A0055180 A0055190