Komatsu — 2.4. GENERAL MAINTENANCE PRECAUTIONS

SECTION 2 SAFETY PRECAUTIONS Page 8 GENERAL MAINTENANCE PRECAUTIONS Jacking up the machine can be hazardous if performed improperly. Use jacking equipment with sufficient capacity. Be sure the jacking points are strong enough for the expected load. Be sure the supports for the jacks are stable. Before jacking up the machine, block the tires on the opposite side of the machine. Because the rear axle pivots, securely block it in position. Do not run the engine with the machine on jacks. For your safety, support the machine before servicing if. This machine is assembled using high strength fasteners. Replacement fasteners must be of the same size and strength as the originals.

Refer to the parts catalog for this machine. Tighten fasteners to the proper torque. When cutting, grinding, pounding, prying, or whenever material could fly or fall, wear proper protective equipment (such as goggles, hard hat, safety shoes, and heavy gloves). During servicing do not allow anyone in the operator's compartment who is not trained and assisting in the servicing. When it is necessary to make any checks or adjustments with the engine running, use two people. A trained operator must be at the controls to safeguard the mechanic making the checks or adjustments.

Be sure the transmission shift lever is locked in neutral (N), the parking brake is applied and the frame halves are locked together. Never stand near the bucket or tires while the engine is running. If compressed air or water under pressure is used for cleaning parts, wear safety goggles. Limit air pressure to 200 [kPa] and water pressure to 270 [kPa]. Never run the engine when cleaning or lubricating the machine because serious injury could result from contacting moving parts. Use a nontoxic, nonflammable commercial solvent for cleaning parts unless otherwise specified. Avoid use of gasoline, diesel fuel, kerosene or other flammable solvents for cleaning parts.

Never place these solvents in an open pan. Use gloves and safety goggles when draining hot fluids. For your safety lower the bucket before servicing the machine. Be sure no one is standing near the bucket when it is being lowered. Do not service the air conditioning system (if equipped) unless you are completely familiar with air conditioning and the safety precautions for handling liquid refrigerant which can cause severe frostbite. Contact the Authorized Distributor of Construction Equipment Before working on the engine or electrical system turn off the starting switch and the master switch and take the keys out. Tag the cables and controls to warn against starting.

Keep the engine exhaust manifold(s) and exhaust system clear of combustible material to reduce the chance of fire. Never remove any guards or shields with the engine running because of the danger of contacting rotating parts. OM515C520C99/1E DRESSTA