Komatsu Galeo PC138US-8 Shop Manual page 323

20 Standard value table
Cate-
Item
gory
Boom
Arm
Bucket
Blade
Each cylinder
Center swivel
joint
PC138US, USLC-8
Applicable model
Test conditions
• For testing posture, see Work
equipment 6
• Engine at low idle
• Hydraulic oil temperature:
• Fully retract arm and bucket
cylinders, then lower boom from
maximum height and test time
taken from point where bucket
contacts ground to point where
chassis rises from ground.
• For testing posture, see Work
equipment 7
• Engine at low idle
• Hydraulic oil temperature:
• Set top surface of boom
horizontal, retract bucket
cylinder fully, then extend arm
cylinder and test time taken for
arm to start moving again after
stopping at bottom.
• For testing posture, see Work
equipment 8
• Engine at low idle
• Hydraulic oil temperature:
• Set top surface of boom
horizontal, retract arm cylinder
fully, then extend bucket
cylinder and test time taken for
bucket to start moving again
after stopping at bottom.
• For testing posture, see Work
equipment 9
• Engine at low idle
• Hydraulic oil temperature:
• Lower blade from maximum
height and test time taken from
point where blade contacts
ground to point where chassis
rises from ground.
• Hydraulic oil temperature:
• Engine at high idle
• Circuit to be tested is relieved.
Standard value for
Unit
45 – 55°C
45 – 55°C
sec.
45 – 55°C
45 – 55°C
45 – 55°C
cc/min
PC138US-8
Service limit value
new machine
Max. 3
Max. 2
Max. 2
Max. 2
Max. 3.5
Max. 10
SEN02457-01
Max. 3
Max. 2
Max. 2
Max. 2
Max. 15
Max. 50
7