OPERATING THE MACHINE EMERGENCY BOOM LOWERING PROCEDURE (Without hose-rupture safety valve) 2 1 WARNING: Prevent personal injury. Confirm that no one is under the front attachment before starting the procedure below. Front-attachment Side If the engine stalls and cannot be restarted, lower the boom to lower the bucket to the ground referring to the emergency boom lowering procedure stated below. 1. Loosen lock nut (1). Loosen screw (2) one half of a turn. The boom will start to lower. The boom lowering speed can be somewhat adjusted by loosening screw (2) more. NOTE: Never loosen screw (2) more than 2 turns. Screw (2) may come off. T1V1-03-03-073 2.
After the bucket is lowered to the ground, retighten screw (2), then lock nut (1) to the specifications below. Lock Nut (1) Tool : 13 mm Torque : 13 N•m (1.3 kgf•m, 9.4 lbf•ft) Screw (2) Tool : 4 mm (Hexagonal wrench) Torque : 7.0 N•m (0.7 kgf•m, 5.0 lbf•ft) Emergency valve 1 NOTE: Excessive leakage may result if the screw and the lock nut are tightened insufficiently. Be sure to retighten the screw and the lock nut to specifications. 2 T1V1-03-03-038 5-35