INTERACTIVE SCHEMATIC
The Bookmarks panel will allow you to
quickly navigate to points of interest.
Click on any text that is BLUE and underlined.
These are hyperlinks that can be used to navi-
gate the schematic and machine views.
When only one callout is showing on a machine view this
button will make all of the callouts visible. This button is
located in the top right corner of every machine view page.
VIEW ALL CALLOUTS
Cover Page
Information
Schematic
Machine Views
Component Table
Tap Table
Fluid Power Symbols
Electrical Symbols
Front Frame
Rear Frame
Tap Views
Features
Options
Bookmarks
X
EC-C3
EC-C2
E-C60
EC-C1
E-C61
To set your screen resolution do the following:
RIGHT CLICK on the DESKTOP.
Select PROPERTIES.
CLICK the SETTINGS TAB.
MOVE THE SLIDER under SCREEN RESOLUTION
until it shows 1024 X 768.
CLICK OK to apply the resolution.
This document is best viewed at a
screen resolution of 1024 X 768.
FUNCTION
Zoom In
HOTKEYS (Keyboard Shortcuts)
Zoom Out
Fit to Page
Hand Tool
“CTRL” / “+”
KEYS
“CTRL” / “-”
“CTRL” / “0” (zero)
“SPACEBAR” (hold down)
Find
“CTRL” / “F”
©
2010 Caterpillar, All Rights Reserved
Printed in U.S.A.
KENR7740
November 2010
390D Excavator
Hydraulic System - Attachment
WAG1-UP
WAP1-UP
WBT1-UP
KCZ1-UP
Reverse Fan
COMPONENT LOCATION
Description
Part
Number
Machine
Location
Schematic
Location
Accumulator GP - Charged (Return Line) 335-0538
Accumulator GP - Hydraulic (Charged) 335-0547
Breather GP 212-5467
Cooler GP - Hydraulic Oil 210-8157
Cylinder GP - Boom Note A
Cylinder GP - Bucket Note A
Cylinder GP - Stick Note A
Filter GP - Oil (Hydraulic)(Return) 1 242-6878
Filter GP - Oil (Hydraulic)(Return) 2 234-4531
Filter GP - Oil (Hydraulic) 185-0336
Filter GP - Oil (Hydraulic)(Case Drain, Motors) 6E-55
34
Filter GP
- Oil (Hydraulic)(Case Drain, Pumps) 6E-5534
Manifold and Valve GP - Load Sensing 310-0122
Motor GP - Fan 247-8978
Motor GP - Hydraulic Fan 225-4614
Motor GP - Swing (Front) 295-9447
Motor GP - Swing (Rear) 295-9446
Motor GP - Travel (Left) 209-5895
Motor GP - Travel (Right) 209-5895
Pump GP - Fan Motor 170-9918
Pump GP - Hydraulic (Swing) 295-9678
Pump GP - Hydraulic (Main) 334-9990
Pump GP - Pilot 155-9222
Sensor AS - Pressure (Load Sensing) 221-88
59
Sens
or AS - Pressure (Overload Warning) 221-8859
Sensor AS - Pressure (Main Pump) 260-2180
Sensor AS - Pressure (Swing Pump) 260-2180
Swivel GP 295-9595
Tank AS - Hydraulic Oil 227-0678
Valve GP - Check 1 173-3429
Valve GP - Check 2 201-9382
Valve GP - Check 3 201-9381
Valve GP - Control (Swing) 241-8929
Valve GP - Control (Main) 295-7745
Valve GP - Manifold and Reducing 140-0736
Valve GP - Solenoid (High Pressure Cutoff) 352-6819
Valve GP - Swing Cushi
on 116-3420
Valv
e GP - Travel Counterbalance (Left) 155-9200
Valve GP - Travel Counterbalance (Right) 155-9200
Motor GP - Hydraulic Fan 200-3252
Valve GP - Control (Reverse Flow Fan) 234-4624
Valve GP - Control (Reverse Fan) 274-2553
Valve GP - Solenoid (Reverse Fan) 242-6880
Note B: Not used with this Attachment
Note A: Check Parts Manual For Proper Cylinder Part Number
Attachment - Reverse Fan
1 C-1
2 D-4
3 A-8
4 B-7
5 F-7
6 F-8
7 F-8
8 A-8
9 A-8
10 B-8
11 A-7
12 A-7
13 B-5
14 A-6
Note B A-7
16 F-4
17 F-3
18 F-6
19 F-5
20 A-5
21 A-4
22 A-3
23 A-5
24 B-6
25 C-6
26 A-3
27 B-4
28 E-5
29 A-8
Note B A-6
31 C-2
32 C-8
33 E-3
34 D-2
35 D-5
36 B-5
37 E-4
38 E-6
39 E-5
40 A-7
41 A-7
42 A-6
43 A-6
TAP LOCATION
Tap
Number
Description
Schematic
Location
Drive Pump Output Pressure
Idler Pump Output Pressure
Load Sense Pressure (Main Hydraulic Pump)
Stroking Pressure (Swing Pump )
Pilot Pump Output Pressure
Pilot Pressure to Swing Pump
Pilot Accumulator Pressure
Power Shift Pressure (Main Hydraulic Pump)
A
B-3
B B-3
LS2 A-2
M1 A-4
P A-5
P1 B-5
PG E-4
PS1 A-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.
PART NUMBER: 352-7253, CHANGE: 00, VERSION: HE
THIS SCHEMATIC IS FOR THE 390D EXCAVATOR
ATTACHMENT: REVERSE FAN
12345678
A
B
C
D
E
F
12345678
A
B
C
D
E
F
B
A B
AB
AB
A
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
AM2
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
DR
DR1
PS2
Pi1
P. P.I
P. P.O
SWING MOTOR (FRONT) SWING MOTOR (REAR)
DB
PG
SDr2PTSDr1
M
M
PG2 DBPG1
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
(REV)(REV)
(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
BR1AR1AL2 BL2
MU
SP
PR
PD
PG
PB
B
DR
A B
AB
PT
PT
AB
M
S
S
Dr
S
T
Pi
A
(1) ACCUMULATOR GP
CHARGED (RETURN LINES)
335-0538
(2) ACCUMULATOR GP
HYDRAULIC (CHARGED)
335-0547
(8) FILTER GP
OIL (HYDRAULIC)
(RETURN) 1
242-6878
(9) FILTER GP
OIL (HYDRAULIC)
(RETURN) 2
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
(42) VALVE GP
CONTROL
(REVERSE FAN)
274-2553
(40) MOTOR GP
HYDRAULIC FAN
200-3252
(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
(41) VALVE GP
CONTROL
(REVERSE
FLOW FAN)
234-4624
(31) VALVE
GP CHECK 2
201-9382
(32) VALVE GP
CHECK 3
201-9381
(33) VALVE GP
CONTROL (SWING)
241-8929
(34) VALVE GP
CONTROL (MAIN)
295-7745
(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
(RIGHT)
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
(OVERLOAD
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
(43) VALVE GP
SOLENOID
(REVERSE FAN)
242-6880
(14) MOTOR GP
FAN
247-8978
MACHINE COMPONENT LOCATIONS
39
38
37
34
33
30
29
28
27
26
24
23
22
2120
19
18
1716
1514
13
12
11
10
9
8
7
6
5
4
3
B
PS1
LS2
P
M1
P1
A
VIEW ALL CALLOUTS
MAIN CONTROL COMPONENT LOCATIONS
REAR VIEW
FRONT VIEW
PG
36
35
32
31
25
2
1
VIEW ALL CALLOUTS
REVERSE FAN
REAR RIGHT VIEW
43
42
41
40
VIEW ALL CALLOUTS
