©
2003 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.
RENR5416-02
February 2003
385B Excavators
Stick Lowering Control Valve
MYA1-UP
RCD1-UP
BKF1-UP
FDL1-UP
ANS1-UP
CLS1-UP
BLY1-UP
Hydraulic System - Attachment
RIGHT
C
PRPB
E
F
SWING
PR
A
Dr
B
Dr
Pi
Pi
Pa
Pb
L2
D
L1
Qmax Qmin
LEFT
D
F
E
P2
TRACK
BL2
AL2
PSA3
PSA2
PSA1
PG
PIN
TOUT
DR1
DR2
DR3
Pi5
PAC
Pi3
Pi2
Pi1
Pi4
Pi6
M1
T2T1
R
S
A
PSA4
DR6
M
G
aL3
bL3
D1
D2
BR1
R2
ATT
AR1
BL1
AL1
AR3AL3
PSga2a1
DR5
BL4
A
B
bL2
PF
PR
LS2
B
L1
PS1
B
A
REV
FWD FWD
REV
aL1
aR1
bL4
aL4
bR1
bL1
L
OUT
R1
STICK
IN
BUCKET
S
BOOM
TRAVEL
(L)
TRAVEL
(R)
aR3
DR4
aL3
bR3
bL3
BR3
BL3
aL2
UP
CLOSE
DOWNOPEN
LS1
SA1
P2
Pb
Pa
Pi
Pi
Dr
P1
C
FRONT
P
T
B
M2
Dr
A
P2
M1
REAR
B
PR
B1
A
NN
SA2
MAIN CONNECTOR LINE
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
177-2638
P
P
1
2
2
1
P
Item
Component
No.
ATTACHMENT COMPONENTS
1
2
1
2
Stick Lowering Control Valve
Solenoid Valve
f05387
