Komatsu PC20R-8 Shop Manual page 63

a. LS Port - From hydraulic pump (P
b. P Port - From L.H. PPC valve (P3 Port)
A1
c. P Port - From L.H. PPC valve (P1 Port)
A6
d. P Port - From R.H. PPC valve (P2 Port)
A7
e. P Port - From R.H. PPC valve (P3 Port)
A8
f. P Port - From work equipment PPC valve (P2 Port)
A9
g. P2 Port - From hydraulic pump (P2 Port)
h. S Port - From hydraulic tank
i. B1 Port - To swing motor (A Port)
j. B2 Port - To swivel joint (D Port)
k. B3 Port - To swivel joint (A Port)
l. B4 Port - To boom swing cylinder (Head side)
m. B5 Port - To swivel joint (F Port)
n. B6 Port - To arm cylinder (Head side)
p. B7 Port - To boom cylinder (Bottom side)
q. B8 Port - To bucket cylinder (Bottom side)
r. B9 Port - To attachment (R.H. side)
s. Pi2 Port - To ST1 solenoid valve (P Port)
t. A9 Port - To attachment (L.H. side)
u. A8 Port - To bucket cylinder (Head side)
v. A7 Port - To boom cylinder (Head side)
x. A6 Port - To arm cylinder (Bottom side)
y. A5 Port - To swivel joint (E Port)
w. A4 Port - To boom swing cylinder (Head side)
z. A3 Port - To swivel joint (C Port)
aa. A2 Port - To swivel joint (B Port)
bb. A1 Port - To swing motor (B Port)
cc. P Port - From hydraulic pump (P1 Port)
dd. P Port - From work equipment PPC valve (P1 Port)
B9
ee. P Port - From R.H. PPC valve (P4 Port)
B8
ff. P Port - From R.H. PPC valve (P1 Port)
B7
gg. P Port - From L.H. PPC valve (P2 Port)
B6
hh. P Port - From L.H. PPC valve (P4 Port)
B1
ii. TS Port - To hydraulic tank
ll. T Port - To hydraulic tank
mm. C Port - To exchange oil cooler
PC20R-8 PC27R-8
Port)
LS
10-45