WARNING: For reasons of safety, always follow these safety precautions. 8. PRECAUTIONS FOR MAINTENANCE 1-24 STOP ENGINE BEFORE CARRYING OUT INSPECTION AND MAINTEN ANCE ‡ 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 bucket 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.
‡ Turn parking brake switch 3 to ON 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 OFF ELECTRONIC CONTROLLED SUSPENSION SYSTEM (E.C.S .S.) For machines equipped with an Electronic Controlled Suspension System (E.C.S.S.), lower the bucket to the ground and turn OFF the E.C.S.S. switch before starting inspection or maintenance. Never turn ON this switch 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 flows 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.