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3-3
Security lock part
1. Safety lock
Warning: the security locking system of the working device is an important part of the machine
safety system. When the driver leaves the cab, it must be locked safely. If the safety lock handle is
not in the locked position, the handle may move, causing the working device or platform to move,
which may result in an accident.
Pilot lock and unlock
Pull the pilot safety lock handle lever to the end position
and lift the left control box to start the ignition; The general
control of the pilot system does not supply oil, and the
machine working device and platform rotation cannot work
(except for left and right walking control), which plays a
role in safety protection.
Push the pilot safety lock handle forward and press it to
the bottom. After the left control box is lowered, the pilot
system is connected to the oil pressure source, and the
machine can work normally.
Pilot safety lock handle
Summary of Contents for U27
Page 1: ...U27Hydraulic Excavator Instruction Manual Guangxi Yuchai Heavy Industry Co Ltd...
Page 5: ...1 1 Preface...
Page 17: ...2 1 Safety regulations...
Page 44: ...3 1 Parts introduction...
Page 49: ...3 6 Panel meter Oil level pointer Timing display Water temperature pointer Indicator area...
Page 55: ...4 1 Operation guide...
Page 89: ...5 1 Maintenance...
Page 130: ...6 1 Accessories guide...