30 Testing and adjusting UEN00228-04
PC210, 230, 240-8
55
Bleeding air from each part 1
Note: Bleed air from the swing motor and travel motor only when the oil in the motor cases is drained.
1. Bleeding air from hydraulic pump
1) Loosen air bleeder (1) and check that oil
oozes out through the air bleeder.
2) After the oil oozes out, tighten air bleeder
(1).
3 Air bleeder:
7.8 – 9.8 Nm {0.8 – 1.0 kgm}
a Do not use an impact wrench to
tighten the air bleeder.
Air bleeding procedure
123456
Bleeding air
from
hydraulic
pump
Starting
engine
Bleeding air
from cylinder
Bleeding air
from swing
motor
Bleeding air
from travel
motor
Checking oil
level and
starting
operation
• Replacing hydraulic oil
• Cleaning strainer
qqq
q
(See note)
q
(See note)
q
• Replacing return filter element
qoooq
• Replacing and repairing hydraulic
pump
• Removing suction piping
qqqooq
• Replacing and repairing control
valve
• Removing control valve piping
qqooq
• Replacing and repairing cylinder
• Removing cylinder piping
qqooq
• Replacing and repairing swing
motor
• Removing swing motor piping
qoqoq
• Replacing and repairing travel
motor
• Removing travel motor piping
qooqq
• Replacing and repairing swivel joint
• Removing swivel joint piping
qoooq
Air bleeding item
Contents of work
1
PC210/230-8
PC240-8
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