Komatsu Galeo PC138US-8 User Manual

20 Standard value table SEN02457-01
PC138US, USLC-8
3
Standard value table for chassis related parts 1
Applicable model PC138US-8
Cate-
gory
Item Test conditions Unit
Standard value for
new machine
Service limit value
Engine speed
At 1-pump relief
• Hydraulic oil temperature:
45 – 55°C
• Engine oil pressure:
Within operating range
• Engine water temperature:
Within operating range
rpm 2,050 ± 100 —
Travel of control levers
Boom control lever
•Center of
lever knob
• Tip of pedal
• Read max.
value to end
of travel
• Engine
stopped
N o
RAISE, LOWER
mm
100 ± 11 100 ± 21
Arm control lever N o IN, OUT 85 ± 11 85 ± 21
Bucket control lever
N o
CURL, DUMP
100 ± 11 100 ± 21
Swing control lever
N o
LEFT, RIGHT
85 ± 11 85 ± 21
Blade control lever
N o
RAISE, LOWER
53 ± 6 Min. 47 Max. 59
Travel control lever
N o FORWARD,
REVERSE
(LEFT, RIGHT)
115 ± 12 Min. 103 Max. 127
Play of control lever
Work equipment,
swing
3 – 5 5 – 8
Travel 10 ± 3 10 ± 5
Operating effort of control lever
Boom control lever
• Engine at high idle
• Oil temperature: 45 – 55°C
• Fit push-pull scale to center of
control lever knob to test
• Fit push-pull scale to tip of
control pedal to test
• Test max. value to end of travel
N
{kg}
16.7 ± 3.3
{1.7 ± 0.3}
Max. 25.5
{Max. 2.6}
Arm control lever
16.7 ± 3.3
{1.7 ± 0.3}
Max. 25.5
{Max. 2.6}
Bucket control lever
13.7 ± 2.7
{1.4 ± 0.3}
Max. 22.6
{Max. 2.3}
Swing control lever
13.7 ± 2.7
{1.4 ± 0.3}
Max. 22.6
{Max. 2.3}
Blade control lever
25.5 ± 6.9
{2.6 ± 0.7}
Max. 32.4
{Max. 3.3}
Travel control lever
24.5 ± 5.9
{2.5 ± 0.6}
Max. 39.2
{Max. 4.0}
Travel pedal
74.5 ± 18.6
{7.6 ± 1.9}
Max. 107.6
{Max. 11}
Hydraulic pressure
Unload pressure
• Hydraulic oil temperature:
45 – 55°C
• Engine at high idle
• Working mode: P mode
• Hydraulic pump output pressure
with all control levers in
NEUTRAL position
MPa
{kg/cm
2
}
4.9 – 6.9
{50 – 70}
4.9 – 6.9
{50 – 70}
Boom relief
• Hydraulic oil temperature:
45 – 55°C
• Engine at high idle
• Pump discharge pressure
• Relieve only circuit to be tested
MPa
{kg/cm
2
}
Target
value
(Range)
34.8 ± 1.0
{355 ± 10}
34.8
{355 }
Arm relief
34.8 ± 1.0
{355 ± 10}
34.8
{355 }
Bucket relief
34.8 ± 1.0
{355 ± 10}
34.8
{355 }
+2.0
–1.0
+20
–10
+2.0
–1.0
+20
–10
+2.0
–1.0
+20
–10

Komatsu Galeo PC138US-8 Specifications

General

Brand	Komatsu
Model	Galeo PC138US-8
Category	Excavators
Language	English