2-23
Downtime for maintenance
Warning: When carrying out any maintenance work on the machine,
the warning sign “No
Operation” must be hung on the joystick.
⚫
The excavator must be parked on solid and flat ground.
⚫
After the excavator is stopped stably, you must lower the bucket to the ground, run the engine at idle speed for three
minutes, stop it and pull out the switch key.
⚫
Release the pressure from all hydraulic systems.
⚫
When the machine is forced to stop on a slope, the sufficient obstacles should be set up in the downward direction of
the crawler tracks on both sides.
⚫
Be sure to keep a certain distance from other machines when parking.
⚫
When repairing the electrical system or performing electric welding operations, it is necessary to remove the negative
cable of the battery to prevent the flow of current.
⚫
Before servicing the machine, if you need to support the machine or accessories to work, support the machine or
accessories firmly, and do not work with only one jack supporting the machine.
⚫
After the machine is started, do not lubricate or repair, and do not let your hands, feet or clothing contact the power
rotating parts.
⚫
To carry out maintenance work while the engine is running, the machine must be supervised by someone.
⚫
Do not put the loose items in your pocket to prevent them from falling into the moving parts.
⚫
The high pressure liquid will splash the eyes or skin, so it should be avoided during maintenance.
⚫
Clean up all the sundries inside the machine to prevent possible wrong operation, causing injury to personnel or
damage to the machine.
⚫
Properly dispose of waste liquids, do not pour oil into the ground, drains, streams, ponds, or lakes, and comply with
environmental protection regulations when draining engine oil, fuel, antifreeze, plastics, battery solution and other
hazardous wastes.
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...