Komatsu PC200-8M0 Shop Manual page 486

SEN06129-01
3. Hydraulic drift of work equipment
Fuel
No. Check item
control
dial
Hydraulic drift of
1 Engine stopped
bucket tip
4. Hydraulic circuit
No. Checked part
Fuel
control
dial
Self pressure
1
reducing valve
Main relief valve
2
(Low pressure)
Main relief valve
3
(Low pressure)
4 Unload valve
5 LS valve
MAX
Swing motor
6
safety valve
Main relief valve
Travel motor
7 Safety valve
Travel junction
valve
Testing oil pressure
A (Control circuit source pressure)
B (Work equipment relief pressure,
low)
C (Work equipment relief pressure,
high)
D (Unload pressure)
E (LS differential pressure)
F (Swing relief pressure)
G (Travel relief pressure)
14
30-103
Condition for check
Work-
ing Checking posture, etc.
mode
Boom top horizontal
Arm cylinder retracted fully
Bucket loaded
Condition for check
Work-
Left knob Operation of work
ing
switch equipment
mode
All lever in neutral
OFF
Arm out relief
ON
All levers in neutral
Right track driven idle
Lever moved halfway
Left track driven idle
Lever moved halfway
P
Swing lock
Right swing relief
Swing lock
OFF
Left swing relief
Right travel lock
Right forward relief
Right travel lock
Right reverse relief
Left travel lock
Left forward relief
Left travel lock
Left reverse relief
Unit Standard value for new machine
2.93 to 3.43 {30 to 35}
33.6 to 36.3 {343 to 370}
36.1 to 38.7 {368 to 395}
MPa
2
{kg/cm }
D1 to D2 = 2.5 to 4.5 {26 to 46}
E1 to E2 = 1.7 to 1.9 {17 to 19}
28.8 to 31.8 {295 to 325}
36.7 to 39.7 {375 to 405}
103 Testing and adjusting, Part 3
Standard
Unit value for new
machine
mm/
Max. 600
15 min
[1] [2] [3]
600K 600K 600K
F pump R pump F pump
main main LS
— — —
B B B
C C C
D1 D1 D2
E1 E2
—
E1
— —
F F
—
F F
—
G
— —
G
— —
G
— —
G
— —
33.1 to 37.2 {338 to 380}
36.1 to 39.7 {368 to 405}
D1 to D2 = 2.5 to 4.5 {26 to 46}
E1 to E2 = 1.7 to 1.9 {17 to 19}
28.4 to 32.3 {290 to 330}
36.8 to 40.2 {375 to 410}
PC200, 200LC, 220, 220LC-8M0
Pm Clinic service
Mea-
Service limit
sured
value
value
Max. 900
[4] [5]
600K 60K
R pump
Control
LS
A
—
B
—
C
—
D2
—
— —
E2
—
— —
— —
— —
— —
— —
— —
Service limit value
2.74 to 3.43 {28 to 35}