Komatsu Galeo PC138US-8 Shop Manual page 321

20 Standard value table
Cate-
Item
gory
Hydraulic drift of
swing
Leakage from travel
motor
Travel speed
(without load)
Travel speed
(actual run)
Travel deviation
Hydraulic drift of
travel
PC138US, USLC-8
Applicable model
Test conditions
• For testing posture, see Swing
2
• Engine stopped
• Hydraulic oil temperature:
• Bucket at rated load (450 kg)
• Set machine on 15° slope, and
set upper structure at an uphill
angle of 45°.
• Make match marks on swing
circle outer race and track
frame.
• Test distance that match marks
move apart after 15 minutes.
• Engine at high idle
• Hydraulic oil temperature:
• Relieve swing circuit.
• For testing posture, see
Travel 1
• Engine at high idle
• Hydraulic oil temperature:
45 – 55°C
• Raise track on one side at a
time, rotate one turn, then
test time taken for next 5
turns with no load.
• For testing posture, see
Travel 2
• Engine at high idle
• Hydraulic oil temperature:
45 – 55°C
• Run up for at least 10 m,
and test time taken to travel
next 20 m on flat ground.
• For testing posture, see Travel
2 and 3
• Engine at high idle
• Hydraulic oil temperature:
• Run up for at least 10 m, and
test deviation when traveling
next 20 m on flat ground.
a Use a hard horizontal surface.
• For testing posture, see Travel
4
• Engine stopped
• Hydraulic oil temperature:
• Stop machine on 12° slope with
sprocket facing straight up the
slope.
• Test the distance the machine
moves in 5 minutes.
Standard value for
Unit
45 – 55°C
Deg.
(mm)
l/min
45 – 55°C
Lo
sec.
Hi
Lo
sec.
Hi
45 – 55°C mm
45 – 55°C
mm
PC138US-8
Service limit value
new machine
0
(0)
Max. 3
Max. 39.5
Max. 22.3
Max. 24.8
Max. 14.1
Max. 200
0
SEN02457-01
0
(0)
Max. 6
49
27
Max. 30
Max. 17
220
0
5