8. PRECAUTIONS FOR MAINTENANCE WARNING: Failure to follow these safety precautions may lead to a serious accident. 1-23 STOP ENGINE BEFORE CARRYING OUT INSPECTION AND MAINTENAN CE ‡ When carrying out inspection and maintenance, park the machine on level ground where there is no danger of falling rocks or landslides, or of flooding if the land is low, then lower the work equipment to the ground and stop the engine. ‡ After stopping the engine, operate work equipment control lever 1 several times to the RAISE and LOWER positions to release the remaining pressure in the hydraulic circuit, then set safety lock 2 to the LOCK position.
‡ Lock parking brake pedal 3 and apply the brake, then put blocks under the tires. ‡ Lock the front and rear frames with safety bar 4. ‡ The worker carrying out the maintenance should be extremely careful not to touch or get caught in the moving parts. TURN E.C.S.S. SWITCH OFF For machines equipped with a E.C.S.S., lower the bucket to the ground and turn the E.C.S.S. switch OFF before starting inspection or maintenance. NEVER turn the switch ON during inspection or maintenance. If the E.C.S.S. switch is turned ON, the hydraulic accumulator of the E.C.S.S. is connected to the bottom circuit of the lift cylinder.
This will cause danger because the hydraulic oil from the accumulator will flow in or out to balance the pressure, and the lift arm will move. If the starting switch is at the OFF position, the E.C.S.S. is not actuated even if the E.C.S.S. switch is ON, but if the starting switch is ON, the E.C.S.S. can be actuated, and it will be switched to the actuation condition when the E.C.S.S. switch is turned ON. WORK EQUIPMENT SUPPORT When carrying out inspection and maintenance with the bucket raised, fit stand 1 securely under the lift arm to prevent the work equipment from coming down. Place work equipment control lever 2 at HOLD, and set safety lock lever 3 to the LOCK position. A0055140