OPERATING THE MACHINE
5-44
How to Lower Boom in Case of Emergency and
When Engine Stops
(Without hose-rupture safety valve)
d
WARNING: Prevent personal injury. Confirm that no
one is under the front attachment before starting the
procedure below.
In case the engine suddenly stops and the engine cannot
restart, lower the boom in the following procedures.
IMPORTANT: Never loosen screw (2) more than 2 turns.
Screw (2) may come off.
1. Loosen lock nut (1) in the control valve at the right.
Loosen screw (2) one half of a turn. The boom lowering
speed can be somewhat adjusted by loosening screw (2)
more.
IMPORTANT: 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. After the boom is lowered, tighten screw (2) and tighten
lock nut (1) to the specifications below.
Locknut (1)
Tightening Torque: 13 N·m (1.3 kgf·m)
Bolt (2)
Tightening Torque: 7 N·m (0.7 kgf·m)
Emergency Valve
1
2
1
2
ZX135US-5B
ZX225US-5B, 225USLC-5B
MDAA-05-003
T1V1-03-03-038
MDAA-05-008
1
2
Summary of Contents for 090001
Page 4: ......
Page 9: ...CONTENTS Bucket Teeth Transverse Type Pin Used Type 13 18 INDEX 14 1 ...
Page 10: ...CONTENTS MEMO ...
Page 14: ...MACHINE NUMBERS 4 MEMO ...
Page 64: ...MEMO SAFETY SIGNS S 50 ...
Page 198: ...OPERATOR S STATION 1 134 MEMO ...
Page 200: ...BREAK IN 2 2 MEMO ...
Page 212: ...OPERATING THE ENGINE 3 12 MEMO ...
Page 266: ...OPERATING THE MACHINE 5 46 MEMO ...
Page 398: ...MAINTENANCE 7 124 MEMO ...
Page 399: ...8 1 HYDRAULIC CIRCUIT AND ELECTRICAL CIRCUIT Hydraulic Circuit MDAA 08 001 ...
Page 402: ...MAINTENANCE UNDER SPECIAL ENVIRONMENTAL CONDITIONS 9 2 MEMO ...
Page 404: ...STORAGE 10 2 MEMO ...