Komatsu Utility PC12R-8 MISTRAL, Shop Manual

Page: 45 / 324

HYDRAULIC CIRCUIT DIAGRAM
PC15R-8 HS (with variable gauge undercarriage)
10-27
PC12R-8 PC15R-8
a2
P2 P1 T1-T2
Ps
a1
R/G
a2
P1 P2
T1-T2
Ps
a1
R/G
4
3
6
8
7
5
1
D
2
EV3
B A
T P
v1
v2
c1
c2
RKP11451
1,5kg/cm
2
B5
B1
B6
A6
A1
A5
A9
B7
A7
B8
A8
B2
A2
003
003
002
002
C
T
Pb1
Ls
Pb2
Pb5
Pb6
Pi1
B
A
T
Pi3 Ts
30 kg/cm 2
S
240 kg/cm 2 210 kg/cm 2
4 kg/cm 2
125 kg/cm
2
M
M
O
P1 P2
LS
05
02
a1
a2
4 2
3
1
100 mesh
P1
Pa1
Pa2
Pa5
Pa6
Pa9
Pi2
B4
A4
B3
A3
P1
P2
P
T
P
T
2 4 3 1
100 mesh
002
002
002
002
Swing
Left
Swing
Right
Swing motor
Boom swing cylinder
(Ø60 x Ø30 - 313)
L.H. swing
R.H. swing
Bucket cylinder
(Ø50 x Ø30 - 378)
Open
Curled
Boom cylinder
(Canopy: Ø55 x Ø30 - 354)
(Cabin: Ø55 x Ø30 - 342)
Lower
Raise
Arm cylinder
(Ø50 x Ø30 - 453)
Close
Open
Additional
equipment
Boom
swing
Blade
Bucket
Boom
R.H. travel
Reverse
Reverse
Forwards
Forwards
L.H. travel
Swing
Arm
L.H. PPC valve
R.H. swing
Close arm L.H. swing
Open
arm
R.H. PPC valve
Curled
bucket Lower
boom Open
bucket
Raise
boom
Cylinder block
Accumulator
12 bar
Oil cooler
R.H. travel motor
Filter 10
µ
n
capacity: 21.6
ᐉ
Hydraulic tank
Raise
Lower
L.H. travel motor
0,35
ᐉ
EV1
EV2
Variable
undercarriage
cylinder
(Ø50 x Ø30 - 315)
Blade cylinder
(Ø60 x Ø30 - 60)