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CAT 390D Excavator Hydraulic System Attachment Stick Lowering Control Valve

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EC-C3
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©
2010 Caterpillar, All Rights Reserved
Printed in U.S.A.
KENR7739
November 2010
390D Excavator
Hydraulic System - Attachment
WAG1-UP
WAP1-UP
KCZ1-UP
Stick Lowering Control Valve
Page 1 of 2
COMPONENT LOCATION
Note : Always Check Parts Manual For Your Specific Machine
Note A : Check Parts Manual For Proper Cylinder Part Number
Description
Machine
Location
Schematic
Location
Accumulator GP - Charged (Return Line)
1 C-2
Accumulator GP - Hydraulic (Charged)
2 D-4
Breather GP
3 A-8
Cooler GP - Hydraulic Oil
4 B-7
Cylinder GP - Boom
5 F-7
Cylinder GP - Bucket
6 E-1
Cylinder GP - Stick
7 F-8
Filter GP - Oil (Hydraulic)(Return)
8 A-8
Filter GP - Oil (Hydraulic)(Return)
9 A-8
Filter GP - Oil (Hydraulic)
10 B-8
Filter GP - Oil (Hydraulic) (Case Drain, Motors)
11 A-7
Filter GP - Oil (Hydraulic) (Case Drain, Pumps)
12 A-7
Manifold and Valve GP - Load Sensing
13 B-5
Motor GP - Fan
14 A-6
Motor GP - Hydraulic Fan
15 A-7
Motor GP - Swing (Front)
16 F-4
Motor GP - Swing (Rear)
17 F-3
Motor GP - Travel (Left)
18 F-6
Motor GP - Travel (Right)
19 F-5
Pump GP - Fan Motor
20 A-5
Pump GP - Hydraulic (Swing)
21 A-4
Pump GP - Hydraulic (Main)
22 A-3
Pump GP - Pilot
23 A-5
Sensor AS - Pressure (Load Sensing)
24 B-6
Part
Number
335-0538
335-0547
212-5467
210-8157
Note A
Note A
Note A
242-6878
234-4531
185-0336
6E-5534
6E-5534
310-0122
247-8978
225-4614
295-9447
295-9446
209-5895
209-5895
170-9918
295-9678
334-9990
155-9222
221-8859
Page 2 of 2
COMPONENT LOCATION
Description
Machine
Location
Schematic
Location
Sensor AS - Pressure (Overload Warning)
25 C-6
Sensor AS - Pressure (Main Pump)
26 A-3
Sensor AS - Pressure (Swing Pump)
27 B-5
Swivel GP
28 E-5
Tank AS - Hydraulic Oil
29 A-8
Valve GP - Check
30 A-6
Valve GP - Check
31 C-1
Valve GP - Check
32 C-8
Valve GP - Control (Swing)
33 E-3
Valve GP - Main Control
34
Valve GP - Manifold and Reducing
35 D-5
Valve GP - Solenoid (High Pressure Cutoff)
36 B-5
Valve GP - Swing Cushion
37 E-4
Valve GP - Travel Counterbalance (Left)
38 E-6
Valve GP - Travel Counterbalance (Right)
Part
Number
221-8859
260-2180
260-2180
295-9595
227-0678
173-3429
201-9382
201-9381
241-8929
295-7745
140-0736
352-6819
116-3420
155-9200
155-9200
39 E-5
Accumulator GP - Hydraulic (Charged)
50 D-4
Sensor AS - Pressure (Boom Lowering)
51 E-7
Switch AS - Pressure (Boom Lower)
52 F-7
Valve GP - Check
53 F-8
Valve GP - Load Control (Boom)
54 F-7
Valve GP - Main Control (Smartboom, Boom Load Control)
55
Valve GP - Manual (Boom Lower)
56 E-7
Valve GP - Solenoid
57 F-8
Valve GP - Check and Relief
335-0547
221-8859
202-9002
297-0370
274-9053
295-7767
270-5692
171-0028
335-0311
60 F-8
Attachment - Boom Float
Attachment - Stick Lowering Control Valve
C-2
C-2
TAP LOCATION
Tap
Number
Description
Schematic
Location
Drive Pump Output Pressure B-3
Idler Pump Output Pressure B-3
Load Sense Pressure (Main Hydraulic Pump) A-2
Stroking Pressure (Swing Pump ) A-4
Pilot Pump Output Pressure A-5
Pilot Pressure to Swing Pump B-5
Pilot Accumulator Pressure E-4
A
B
LS2
M1
P
P1
PG
PS1 Power Shift Pressure (Main Hydraulic Pump) B-3
FLUID POWER SYMBOLS
ONE POSITION
TWO POSITION
THREE POSITION
VENTED
PRESSURIZED
RETURN ABOVE FLUID LEVEL
RETURN BELOW FLUID LEVEL
LINES CROSSING LINES JOINING
TWO-WAY
THREE-WAY
FOUR-WAY
SPRING
CONTROL VALVES
RESTRICTION
LINE RESTRICTION
(FIXED)
2-SECTION PUMP
MAIN
AUX.
SPRING
(ADJUSTABLE)
VARIABILITY
LINE RESTRICTION
(VARIABLE)
LINE RESTRICTION
VARIABLE and PRESSURE
COMPENSATED
PRESSURE
COMPENSATION
PUMP: VARIABLE and
PRESSURE COMPENSATED
ENERGY TRIANGLES
HYDRAULIC PNEUMATIC
MEASUREMENT
PRESSURE
TEMPERATURE
FLOW
ROTATING SHAFTS
UNIDIRECTIONAL BIDIRECTIONAL
PUSH-PULL LEVER PEDALGENERAL MANUAL PUSH BUTTON SPRING
MANUAL CONTROL SYMBOLS
HYDRAULIC MOTORS
FIXED
DISPLACEMENT
VARIABLE DISPLACEMENT
NON-COMPENSATED
UNIDIRECTIONAL
BIDIRECTIONAL
HYDRAULIC PUMPS
FLUID STORAGE RESERVOIRS
CROSSING AND JOINING LINES
VALVE ENVELOPES
VALVE PORTS
BASIC COMPONENT SYMBOLS
FLUID CONDITIONER
PUMP or MOTOR
FIXED
DISPLACEMENT
VARIABLE DISPLACEMENT
NON-COMPENSATED
UNIDIRECTIONAL
BIDIRECTIONAL
VALVES
PILOT CONTROL SYMBOLS
RELEASED PRESSURE
EXTERNAL RETURN
INTERNAL RETURN
REMOTE SUPPLY PRESSURE
SIMPLIFIED
COMPLETE
INTERNAL
SUPPLY PRESSURE
ACCUMULATORS
SPRING LOADED GAS CHARGED
SOLENOID
or MANUAL
SOLENOID
and PILOT
SOLENOID and
PILOT or MANUAL
COMBINATION CONTROLS
SOLENOID
SERVO
THERMAL
DETENT
HYDRAULIC AND PNEUMATIC CYLINDERS
DOUBLE ACTINGSINGLE ACTING
BASIC
SYMBOL
SPRING
LOADED
CHECK VALVES
TWO
POSITION
INFINITE
POSITIONING
FLOW IN ONE
DIRECTION
FLOW ALLOWED IN
EITHER DIRECTION
THREE
POSITION
CROSS
FLOW
PARALLEL
FLOW
INTERNAL PASSAGEWAYS
NORMAL POSITION
A B
P T
A B
P T
SHIFTED POSITION
INFINITE POSITION
CONTROL VALVES
ATTACHMENT
MANUAL SHUTOFF
SHUTTLE PILOT
CONTROLLED
ELECTRICAL SYMBOLS
Hydraulic Symbols (Electrical)
325-AG135 PK-14
Circuit Identification
Number
Wire Color
Wire Gauge
Harness identification code
This example indicates
wire 135 in harness "AG".
325-PK-14
Wire Gauge
Wire Color
Circuit Number
Identification
Wire Number Identification Codes
Current Standard
Previous Standard
Electrical Schematic Example
Hydraulic Schematic Example
325-PK
Wire Color
Circuit Number
Identification
B
A
Wire
Wire
(EXAMPLE VALVE)
Current Standard
Transducer
(Fluid)
Transducer
(Gas / Air)
G
Generator
Electrical Wire
Pressure Switch
M
Electric Motor
Pressure Switch
(Adjustable)
Temperature Switch
Pressure
Symbol
Temperature
Symbol
Level
Symbol
Flow
Symbol
Electrical Symbols (Electrical)
T
HYDRAULIC CIRCUIT COLOR DESCRIPTIONS
PILOT PUMP OUTPUT
DRIVE PUMP OUTPUT
HIGH PRESSURE CUTOFF CIRCUIT
DRIVE AND IDLER PUMPS COMBINED CIRCUIT
FAN PUMP AND CIRCUIT
SUPPLY LINE
STICK CYLINDER AND CONTROL CIRCUIT
LEFT TRAVEL MOTOR AND CONTROL CIRCUIT
ATTACHMENT CONTROL CIRCUIT
SWING MOTOR AND CONTROL CIRCUIT
DRAIN / RETURN LINE
SWING BRAKES
IDLER PUMP OUTPUT
BUCKET CYLINDER AND CONTROL CIRCUIT
RIGHT TRAVEL MOTOR AND CONTROL CIRCUIT
BOOM CYLINDER AND CONTROL CIRCUIT
LINE PATTERNS
Drain / Return Lines
Component Group
Pilot / Load Sensing Pressure
Pressure Line
CALLOUTS
Taps (Pressure, Sampling, Sensor - by letter)
YY
(52) VALVE GP - CONTROL
138-1234
Callout Number
(Machine Location from
Component LocationsTable)
Component
Name
Part Number
Components are shown installed on a fully operable machine with the key and engine off,
and with parking brake set.
Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations.
THIS SCHEMATIC IS FOR THE 390D EXCAVATOR
ATTACHMENT: STICK LOWERING CONTROL VALVE
PART NUMBER: 297-0455, CHANGE: 00, VERSION: HE
12345678
A
B
C
D
E
F
12345678
A
B
C
D
E
F
TRAVEL MOTOR (RIGHT)TRAVEL MOTOR (LEFT)
Pi5
Pi4
Pi3
Pi2
Pi1
PSA4
PSA3
PSA2
PSA1
PAC
DR1
DR2
DR3
DR4
DR5
DR6
P-IN
T-OUT
Pi6
DR6
DR5
G
T2
T1
R
A
M2
A
S
DR1
DR
S
M1
L2
L1
P2
D2
S1
D1
P1
PS1
SA1
SA2
a1
a2
LS1
LS2
AL3
BL3
PP3
T1
T2
BG
B
A
AG
BG
AG
A
B
T2
T1
PP3
A
DR
B
DR
A
B
DR1
PS2
Pi1
P. P.I
P. P.O
SWING MOTOR (FRONT) SWING MOTOR (REAR)
DB
PG
SDr2
PT
SDr1
M
M
PG2 DBPG1
PB
PA
B
BA
PA
PB
A
A1
B1
A1
B1
(R)
(L)
(R)
(L)
(FWD)
(FWD)
(REV)
(REV)
L1
G
Dr
L2
T
C1
C2
P
Dr
PF PR
BR2 AR2 BR3 AR3
AL2 BL2
AL1 BL1
PR
PF
AR1BR1
BR2 AR2 BR3 AR3
A
B
L
BR
L
BR
A
B
Qmax Qmin
(BKWD)
(BKWD)
(IN)
(FWD)
(FWD)
(OUT)
STICK
TRAVEL(L)
TRAVEL(R)
(CLOSE)
(UP)
(OPEN)
(DOWN)
BOOM
BUCKET
ATCH
HPC-ON
aR3aR2aR1
bR3bR2bR1
R2
aL1aL2aL3
bL1bL2bL3
R1
HPC-OFF
(RET)
(EXT)
PS2
PS2
PS3
PS3 DR3
DR3 DR2
DR2
PS4 DR4
Pi2
Pi2
DR4
MU
PS4
AL1
BL1
BR1
AR1
MU
SP
PR
PD
PG
PB
T
T CV
CV
CYL
CYL
Pi
Pi
DR
DR
A1
A2
DR
A
B
X
X
P T
A1
A2
DR Pi T
CV
CH
AL2 BL2
(1) ACCUMULATOR GP
CHARGED
RETURN LINE
335-0538
(50) ACCUMULATOR GP
HYDRAULIC (CHARGED)
335-0547
(8) FILTER GP
OIL (HYDRAULIC)
(RETURN)
242-6878
(9) FILTER GP
OIL (HYDRAULIC)
(RETURN
234-4531
(10) FILTER GP
OIL (HYDRAULIC)
185-0336
(11) FILTER GP
OIL (HYDRAULIC) (CASE DRAIN, MOTORS)
6E-5534
(13) MANIFOLD AND VALVE GP
LOAD SENSING
310-0122
(14) MOTOR GP
FAN
247-8978
(15) MOTOR GP
HYDRAULIC
FAN
225-4614
(16) MOTOR GP
SWING (FRONT)
295-9447
(17) MOTOR GP
SWING (REAR)
295-9446
(18) MOTOR GP
TRAVEL (LEFT)
209-5895
(19) MOTOR GP
TRAVEL (RIGHT)
209-5895
(20) PUMP GP
FAN MOTOR
170-9918
(21) PUMP GP
HYDRAULIC
SWING
295-9678
(22) PUMP GP
HYDRAULIC ( MAIN)
334-9990
(23) PUMP GP
PILOT
155-9222
(28) SWIVEL GP
295-9595
(30) VALVE GP
CHECK
173-3429
(31) VALVE GP
CHECK
201-9382
(32) VALVE GP
CHECK
201-9381
(33) VALVE GP
CONTROL, SWING
241-8929
(35) VALVE GP
MANIFOLD AND REDUCING
140-0736
(36) VALVE GP
SOLENOID
HIGH PRESSURE CUTOFF
352-6819
(37) VALVE GP
SWING CUSHION
116-3420
(38) VALVE GP
TRAVEL COUNTERBALANCE (LEFT)
155-9200
(39) VALVE GP
TRAVEL
COUNTERBALANCE (RT)
155-9200
LS2
PS1
M1
P
P1
B
A
PG
(26) SENSOR AS
PRESSURE
MAIN PUMP
260-2180
(27) SENSOR AS
PRESSURE
SWING PUMP
260-2180
(25) SENSOR AS
PRESSURE
OVER LOAD
WARNING
221-8859
(24) SENSOR AS
PRESSURE
LOAD SENSING
221-8859
(3) BREATHER GP
212-5467
(4) COOLER GP
HYDRAULIC OIL
210-8157
(29) TANK AS
HYDRAULIC OIL
227-0678
(12) FILTER GP
OIL (HYDRAULIC) (CASE DRAIN, PUMPS)
6E-5534
(5) CYLINDER GP
BOOM
(7) CYLINDER GP
STICK
(6) CYLINDER GP
BUCKET
(57) VALVE GP
SOLENOID
171-0028
(53) VALVE GP
CHECK
297-0370
(54) VALVE GP
LOAD CONTROL (BOOM)
274-9053
(56) VALVE GP
MANUAL (BOOM LOWER)
270-5692
(55) VALVE GP
MAIN CONTROL
SMART BOOM,
BOOM LOAD CONTROL
295-7767
(51) SENSOR AS
PRESSURE
BOOM
LOWERING
221-8859
(52) SWITCH AS
PRESSURE
BOOM LOWER
202-9002
(60) VALVE GP
CHECK AND RELIEF
335-0311
(2) ACCUMULATOR GP
HYDRAULIC (CHARGED)
335-0547
(34) VALVE GP
MAIN CONTROL
295-7745
BOOM FLOAT
57
56
55
54 53
52
51
50
VIEW ALL CALLOUTS
MAIN CONTROL COMPONENT LOCATIONS
REAR VIEW
FRONT VIEW
PG
36
35
32
31
25
2
1
VIEW ALL CALLOUTS

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