RENR7346
20 Page, RBM
©
2004 Caterpillar
All Rights Reserved
Printed in U.S.A.
RENR7346
January 2005
365C Front Shovel
Hydraulic System
PAR1-UP
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
PEDAL
GENERAL 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
FLUID POWER SYMBOLS
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 ACTING
SINGLE 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
AB
PT
AB
PT
SHIFTED POSITION
INFINITE POSITION
CONTROL VALVES
Hydraulic Symbols (Electrical)
Electrical Symbols Table
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
T
Pressure
Symbol
Temperature
Symbol
Level
Symbol
Flow
Symbol
Electrical Symbols (Electrical)
Description
Part
Number
Machine
Location
Schematic
Location
Accumulator GP 160-4138 8 G-10
Filter GP - Case Drain 6E-5534 1 A-14
Filter GP - Pilot 185-0336 9 B-15
Filter GP - Return 234-4454 17 B-14
Filter GP - Return 259-0681 22 A-15
Motor GP - Fan 225-4613 15 B-13
Motor GP - Swing, Left 234-4525 18 I-8
Motor GP - Swing, Right 234-4527 19 H-10
Motor GP - Travel, Lt and Rt 147-5784 5 H-11 and H-12
Pump GP - Fan 247-8968 21 B-9
Pump GP - Main, Front & Rear 259-0782 13 A-12
Pump GP - Swing 259-0783 14 B-8
Pump GP -Pilot 155-9222 6 A-10
Sensor GP - Pressure 221-8869 12 B-9 and B-12
Swivel GP 156-0622 7 G-11
Valve GP - Back Pressure 201-9381 10 D-7
Valve GP - Check, Bypass 201-9382 11 D-15
Valve GP - Counterbalance 143-8067 4 H-11 and H-12
Valve GP - Proportional 263-0065 16 F-7
Valve GP - Proportional, Swing 241-8928 20 H-10
Valve GP - Solenoid, Swing Park 140-0736 3 F-10
Valve GP - Swing 116-3420 2 H-8
Component Locations
Case Drain Filters (1)
Pilot Pump (6)
Main Pumps, Front and Rear (13)
Swing Pump (14)
Fan Pump (21)
Left Swing Motor (18)
Swing Park Brake Solenoid Valve (3)
Left Travel Motor (5)
Counterbalance Valve (4)
Left Swing Motor (18)
Right Swing Motor (19)
Pilot Pump (6)
Component Locations
5
2
13
5
18
19
7
1
14
6
THIS SCHEMATIC IS FOR THE 365C FRONT SHOVEL
Part # 261-0303 CHG 01.
Components are shown installed on a fully operable machine with the key and engine
off and transmission shifter in neutral.
RENR7346
20 Page, Color 2, RBM
HYDRAULIC CIRCUIT COLOR DESCRIPTIONS
Pump Output (Main, Front and Rear)
Pump Output (Fan)
Swing Circuits
Supply Line
Drain / Return Line
Stick Circuit
Bucket Circuit
Pump Output (Pilot)
Boom Circuit
ATCH Circuit
Pump Output (Swing)
LINE PATTERNS
Drain / Return Lines
Component Group
Pilot / Load Sensing Pressure
Pressure Line
Attachment
Travel Circuits
Bottom Dump Circuit
A
B
C
D
E
F
G
H
I
A
B
C
D
E
F
G
H
I
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
L
X
D1
PS2g
STICK CYLINDER
BOOM CYLINDER
SWING MOTOR - RIGHT SWING MOTOR - LEFT
LS2gLS2
PS2
M2
SA2
P2
M2g
M1g
P1
SA1
M1
LS1g
LS1
PS1
PS1g
R1
M1g'
S1
M2g' D2 R2
PR
PD
PG1
PG2
DB
PB
M
B
A
PA
M1 M2
SDr1
SP
T P SDr2
R
M
PA
PB
PG
DB
Pi6
Pi5
Pi4
Pi3
Pi2
Pi1
PSA4
PSA3
PSA2
PSA1
PAC
PG
DR1
DR2
DR3
DR4
DR5
DR6
PIN
TOUT
Qmax Qmin
AS
R
T1
T2
L1
L2
M1
S
DR
DR1
S
A
M
G
Qmax QminQmax Qmin
L2
L3
DR
DR1
A
B
AR3 BR3
BL4
AL4
PF
PR
BL1
AL1 AR1
BR1
BL3 AL3 AR3
BR3
PF
PR
AL4
BL4 BR1 AR1 BL1 AL1
FWD
FWD
IN
REV
REV
OUT
STICK
TRAVEL(L)
TRAVEL(R)
CLOSE
UP
OPEN
DOWN
BOOM
BUCKET
ATCH
LS
bL1bR1aL4
aL1aR1bL4
DR4DR5
R2
DR3
PS3
DR1
aR3aL3aL2
bR3bL3bL2
R1
DR2
PS2
DR4PS4
BL2 AL2
X
T1
T2
BG
B
A
AG
A
BBR
L
BR
A
B
T1
T2
BG
B
A
AG
10
14
21
12
6
13
15
1
22
9
17
11
7
3
4
8
2
4
5
5
19
20
18
16
12
TRAVEL MOTOR - LEFT
TRAVEL MOTOR - RIGHT
BOTTOM DUMP
AL2 BL2
MASTER CYLINDER
BUCKET CYLINDER
BL3 AL3
