©
2002 Caterpillar
All Rights Reserved
Printed in U.S.A.
This attachment schematic is to be used in conjunction with the Standard Schematic in this Service Manual.
RENR5337
June 2002
365B Excavators
Smart Boom and
Boom Lowering Control Valve
9PZ475-UP
9TZ531-UP
CTY403-UP
Hydraulic System (Attachment)
Item
Component
STANDARD COMPONENTS
No.
1
2
3
PILOT LINE
DRAIN LINE
MAIN CONNECTOR LINE
This Attachment Schematic is intended to
be used in conjunction with the Standard
Hydraulic Schematic in this Service Manual.
Hydraulic Schematic
206-6814
R
T1
RIGHT
L'
L'
B' A'
C/V
Dr1
CYL
Pi1
BR
BR
MB
MA
M
MB
A'B'
LEFT
PR
PG
E
F
SWING
L2
D
L1
Qmax Qmin
T1
LEFT
A'
D
F
E
P
T
M2
M1
B'
B
REV
FWD FWD
A
TRACK
T2
X
T2
REV
BL2
AL2
B
LL1S
PSA3
PSA2
PSA1
PG
PIN
TOUT
DR1
DR2
DR3
Pi5
PAC
Pi3
Pi2
Pi1
Pi4
Pi6
M1
T2T1
R
S
AS
PSA4
DR6
M
G
aR3
aL3
bR3
bL3
aL1
aR1
bL4
aL4
bR1
PF
PR
bL1
P
R1
D1
D2
R2
AL4
BR1
R2
ATT
AR1
BL1
AL1
AR3AL3
BL3
RIGHT
T
S1
DR5
BL4
bL2
QmaxQmin
B
M2
M2g
A
LS2
LS2g
PS2g
PS2
M2g'
M1g'
PS1g
PS1
aL2
R1
STICK
P
BUCKET
DOWN
BOOM
TRAVEL
(L)
TRAVEL
(R)
DR4
LS1g
LS1
SA1
M1g
M1
P2
P1
)(
M
P
MA
QminQmax
B
A
OPEN
PD
P1
P2
T
Dr
Pi1
X
CYL
Dr1
C/V
UP
CLOSE
)(
SA2
P
OUT
IN
1
2
3
3
Boom Lowering Control Valve
Solenoid Valve
Proportional Reducing Valve
f05697
1
2
3
