©
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.
RENR3701-02
August 2002
365B Excavator
Boom Lowering Control Valve
AGD1-235
CTY1-402
4XZ1-339
9PZ1-474
9TZ1-530
Hydraulic System - Attachment
R
T1
RIGHT
L'
L'
B' A'
C/V
Dr1
CYL
Pi1
BR
BR
MB
MA
M
MB
A'B'
STICK CYLINDER
LEFT
BUCKET CYLINDER
PR
PG
E
F
SWING
L2
D
L1
Qmax Qmin
T1
LEFT
A'
D
F
E
P
T
M2
M1
B'
B
P2
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
AR3
BR3
AL3
BL3
RIGHT
T
S1
DR5
BL4
dR1
bL2
QmaxQmin
B
M2
M2g
A
LS2
LS2g
PS2g
PS2
M2g'
M1g'
PS1g
PS1
4
aL2
R1
STICK
BUCKET
BOOM
TRAVEL
(L)
TRAVEL
(R)
DR4
LS1g
LS1
SA1
M1g
M1
P2
P1
)(
M
P
MA
QminQmax
B
A
PD
P1
P2
T
Dr
Pi1
X
CYL
Dr1
C/V
UP
CLOSE
SA2
P
OUT
IN
PILOT LINE
DRAIN LINE
This Attachment Schematic is intended to
be used in conjunction with the Standard
Hydraulic Schematic in this Service Manual.
Hydraulic Schematic
MAIN CONNECTOR LINE
140-0718
1
3
2
Item
Component
No.
1
2
ATTACHMENT COMPONENTS
Proportional Reducing Valve
Boom Lowering Control Valves
3
Pressure Switch
1
2
3
f06457
BOOM CYLINDERS
