SAFETY SAFETY NOTICE PRECAUTIONS DURING WORK 19.Be sure to assemble all parts again in their origi- nal places. Replace any damaged parts with new parts. When installing hoses and wires, be sure that they will not be damaged by contact with other parts when the machine is being operated. 11.When removing the oil filler cap, drain plug or hydraulic pressure measuring plugs, loosen them slowly to prevent the oil from spurting out. Before disconnecting or removing components of the oil, water or air circuits, first remove the pressure completely from the circuit. 20.When installing high pressure hoses, make sure that they are not twisted.
Damaged tubes are dangerous, so be extremely careful when install- ing tubes for high pressure circuits. Also, check that connecting parts are correctly installed. 12.The water and oil in the circuits are hot when the engine is stopped, so be careful not to get burned. Wait for the oil and water to cool before carry- ing out any work on the oil or water circuits. 21.When assembling or installing parts, always use the specified tightening torques. When installing protective parts such as guards, or parts which vibrate violently or rotate at high speed, be par- ticularly careful to check that they are installed correctly. 13.Before starting work, remove the leads from the battery.
Always remove the lead from the nega- tive (–) terminal first. 14.When raising heavy components, use a hoist or crane. Check that the wire rope, chains and hooks are free from damage. Always use lifting equipment which has ample capacity. Install the lifting equipment at the correct places. Use a hoist or crane and operate slowly to pre- vent the component from hitting any other part. Do not work with any part still raised by the hoist or crane. 22.When aligning two holes, never insert your fin- gers or hand. Be careful not to get your fingers caught in a hole. 23.When measuring hydraulic pressure, check that the measuring tool is correctly assembled before taking any measurements.
24.Take care when removing or installing the tracks of track-type machines. When removing the track, the track separates suddenly, so never let anyone stand at either end of the track. 15.When removing covers which are under internal pressure or under pressure from a spring, always leave two bolts in position on opposite sides. Slowly release the pressure, then slowly loosen the bolts to remove. 16.When removing components, be careful not to break or damage the wiring. Damaged wiring may cause electrical fires. 17.When removing piping, stop the fuel or oil from spilling out. If any fuel or oil drips onto the floor, wipe it up immediately.
Fuel or oil on the floor can cause you to slip, or can even start fires. 18.As a general rule, do not use gasoline to wash parts. In particular, use only the minimum of gasoline when washing electrical parts. 00-4