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. FOR THE MACHINE
Classifi-
Check item
cation
Engine speed with
one pump at max.
pressure
Boom control
Arm control
Bucket control
Swing control
Work equipment control
Blade control
Boom swing control
Travel control
Boom control
lever
Arm control lever
Bucket control lever
Swing control lever
Blade control lever
Boom swing
pedal
Travel control
lever
Accelerator lever
Play of control lever
20-4
Machine model
Test condition
.
Boom circuit: max. pressure
.
Hydraulic oil temperature: 45 ± 55ëC
.
Cooling circuit: in correct range
.
Engine oil pressure: in correct range
H
Measure when pressure has stabilised
.
Boom and swing circuit:
max. pressure
.
Hydraulic oil temperature: 45 ± 55ëC
.
Cooling circuit: in correct range
.
Engine oil pressure: in correct range
H
Measure when pressure has stabilised
a
a
RKP01980
Neutral
.
At centre of
lever knob
.
Reading at
Neutral
end of travel
.
Equipment
on the ground
Neutral
.
Engine
stopped
.
Tip of pedal
Neutral
Neutral
Neutral
Neutral
Min.
Work equipment,
swing
Travel
Unit
rpm
b
RKP01970
mm
b
Raise
Lower
Open
Curled
Open
Curled
Swing RH
Swing LH
Raise
Lower
mm
Swing RH
Swing LH
Forward
Backward
Ð Max.
PC20R-8
Standard
Permissible
value
value
2740
2690 ± 2790
2720
2670 ± 2770
<
<
a
b
30
6
6
30
20
6
6
20
70
60 ± 80
70
60 ± 80
70
60 ± 80
70
60 ± 80
50
40 ± 60
20
17 ± 23
100
90 ± 110
180
160 ± 200
Max. 5
Max. 8
Max. 10
Max. 15
PC20R-8 PC27R-8
a
b
6
6
6
6
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