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(5) Installing hydraulic equipment
1. Ensure hydraulic oil and lubricant are properly supplied.
2. Perform air bleeding when :
a. Hydraulic oil changed
b. Parts of suction side piping replaced
c. Hydraulic pump installed
d. Slewing motor installed
e. Travel motor installed
f. Hydraulic cylinder installed
3. Perform air bleeding of the hydraulic pump and slewing motor after loosening the upper drain plug,
starting the engine and keep it in low idle condition.
Complete the air bleeding when seeping of hydraulic oil is recognized, and 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 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, a nd replenish oil if
necessary.
Operation of the hydraulic equipment without filling hydra ulic oil or lubricant or without performing air
bleeding will result in damage to the equipment.
Do not allow the hydraulic cylinder to bottom on the stroke end just after the maintenance.
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