XE210C Hydraulic Excavator
Operating and Maintenance Manual
137
Blockage of filter
Attach a new filter
Wear of hydraulic pump
Contact with the assigned dealer of XEM excavator.
Blockage of radiator or oil cooler
Clean and straighten the blade.
Bypass of oil cooler
Contact with the assigned dealer of XEM excavator.
Trouble of safety valve
Contact with the assigned dealer of XEM excavator.
Polluted hydraulic oil
Drain the oil and fill it up.
Improper adjustment of hydraulic components
Contact with the assigned dealer of XEM excavator.
Foaming
of
hydraulic oil
Air leak of the pipe from oil tank to pump
Contact with the assigned dealer of XEM excavator.
Twist or depression of hydraulic pipeline
Check the pipeline.
Wrong hydraulic oil
Adopt the correct hydraulic oil.
Water in hydraulic oil
Replace the hydraulic oil.
Overhigh or overlow oil level
Calibrate the oil level.
Low or no oil
pressure
Wrong hydraulic oil
Adopt the correct hydraulic oil.
Improper adjustment of hydraulic components
Contact with the assigned dealer of XEM excavator.
No hydraulic oil in the system
Fill up the correct hydraulic oil.
Worn hydraulic cylinder packing
Contact with the assigned dealer of XEM excavator.
Trouble of safety valve
Contact with the assigned dealer of XEM excavator.
No
hydraulic
function (fracas of
pump)
Wear of hydraulic pump
Contact with the assigned dealer of XEM excavator.
Reduction of set pressure of main safety valve
of control valve
Contact with the assigned dealer of XEM excavator.
Low level of hydraulic oil
Fill up the hydraulic oil.
Damage of oil suction pipeline or hose
Contact with the assigned dealer of XEM excavator.
Blockage of suction filter, and air sucked in
oil suction.
Clean the filter system.
The
hydraulic
cylinder acts but it
can’t lift the load.
Wear of hydraulic pump
Contact with the assigned dealer of XEM excavator.
Low pressure of main safety valve
Contact with the assigned dealer of XEM excavator.
Low level of hydraulic oil
Fill up the hydraulic oil.
Blockage of suction filter
Clean the filter system.
Leakage of pump suction pipeline
Check the oil suction pipeline.
One control lever
fails to work.
Low pressure of safety valve
Contact with the assigned dealer of XEM excavator.
Damage of pipe or hose
Repair or replace
Loosening of hydraulic joint
Tighten.
Damage of O-ring in the joint
Attach a new O-ring.
hydraulic pump trouble
Contact with the assigned dealer of XEM excavator.
Trouble of pilot valve
Contact with the assigned dealer of XEM excavator.
Damage of pilot pipeline
Repair or replace
One
hydraulic
cylinder fails to
work.
Control valve column is damaged or polluted
by dirt.
Contact with the assigned dealer of XEM excavator.
Damage of hydraulic pipeline
Repair or replace
Loosening of joint
Tighten.
Damage of O-ring in the joint
Attach a new O-ring.
Trouble of pilot valve
Contact with the assigned dealer of XEM excavator.
Damage of pilot pipeline
Repair or replace