OPERATING THE MACHINE
5-34
2
1
Front-attachment
Side
T1V1-03-03-073
Emergency valve
1
2
T1V1-03-03-038
EMERGENCY BOOM LOWERING PROCEDURE
(Without hose-rupture safety valve)
WARNING: Prevent personal injury. Confirm that no
one is under the front attachment before starting the
procedure below.
ZX180-3, 200-3, 270-3, 330-3 class
If the engine stalls and cannot be restarted, lower the boom
to lower the bucket to the ground referring to the emer-
gency boom lowering procedure stated below.
IMPORTANT: Never loosen screw (2) more than 2 turns.
Screw (2) may come off.
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.
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 N•m (0.7 kgf•m, 5.0 lbf•ft)
IMPORTANT: Excessive leakage may result if screw (2) and
lock nut (1) are tightened insufficiently. Be
sure to retighten screw (2) and lock nut (1) to
specifications.
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