1. OUTLINE
1-5
1
(5) Installing Hydraulic Equipment
1. Ensure hydraulic oil and lubricant are properly supplied.
2. Perform air bleeding when:
a. Hydraulic oil is changed.
b. Parts of suction side piping is replaced.
c. Hydraulic pumps are installed.
d. Slewing motor is installed.
e. Travel motor is installed.
f. Hydraulic cylinder is installed.
3. Perform air bleeding of the hydraulic pump and slewing motor after loosening the upper drain plug, starting the
engine and running the engine at low idle.
Complete the air bleeding when seeping of hydraulic oil is recognized, and then tightly plug.
4. Perform air bleeding of the travel motor and the hydraulic cylinders by running the engine for more than 5
minutes at low speed without load.
5. Perform air bleeding of the pilot line by performing a series of digging, slewing and travel.
6. Check hydraulic oil level after placing the attachment to the oil check position, and replenish oil if necessary.
Operation of the hydraulic equipment without filling hydraulic oil or lubricant or without performing air bleeding will
result in damage to the equipment.
Do not allow the hydraulic cylinder to bottom out on the stroke end just after the maintenance.
Level gauge
Oil level lines (Level
located between the
two lines shows
appropriate amount
of oil)
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