4-3
Engine operation
Warning: Before starting the engine, please refer to the safety details in this manual. Read
all safety signs on the machine. There must be no other people in the workplace. Before
operation, learn and practice safe operation. When operating the machine, you must be
clear about and follow the relevant operation and maintenance sections of the manual, and
comply with the corresponding laws and regulations.
1. Check before starting the engine
1) Check whether the seat belt is fastened, honking the horn, and confirm whether there are people around the working
area and on or under the machine.
2) Check whether each window glass and rearview mirror can provide a good field of vision.
3) Check whether there is dust or dirt around the engine, battery and radiator, and remove if there is any.
4) Check that there are no cracks, excessive wear or play in the working devices, cylinders, connecting rods and
hydraulic hoses. If an abnormality is found, it must be replaced and repaired.
5) Check the hydraulic device, hydraulic oil tank, hoses, and joints for oil leakage.
6) Check the lower body (track, sprocket, guide wheel, etc.) for damage, wear, loose bolts, or oil leakage.
7) Check whether the display of the meter is normal, whether the working lights can work normally, and whether there is
an open circuit in the electrical circuit.
8) Check whether the coolant level, fuel level, hydraulic oil level, and engine oil level are between the upper and lower
limits.
9) In cold weather, it is necessary to check whether the coolant, fuel, hydraulic oil, battery electrolyte, engine oil, and
lubricating oil are frozen. If it is frozen, the engine must be defrosted before starting the engine.
10) Check whether the hydraulic safety lock is in the locked state.
11) Check the working condition, direction, and position of the machine in order to provide relevant information for the
operation.
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...