RENR7306-01
February 2009
365C Excavator
Hydraulic System
ELC1-UP
MEM1-UP
FEN1-UP
MCS1-UP
MCY1-UP
Printed in U.S.A.© 2009 Caterpillar, All Rights Reserved
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)
PUMP
(2 - SECTION)
SPRING
(ADJUSTABLE)
VARIABILITY LINE RESTRICTION
(VARIABLE)
PRESSURE
COMPENSATION
PUMP
(VARIABLE & PRESSURE
COMPENSATED)
MEASUREMENT
PRESSURE TEMPERATURE FLOW
ROTATING SHAFTS
UNIDIRECTIONAL BIDIRECTIONAL
PUSH - PULL LEVER PEDALGENERAL MANUAL PUSH BUTTON SPRING
FIXED
DISPLACEMENT
VARIABLE DISPLACEMENT
NON-COMPENSATED
UNIDIRECTIONAL
BIDIRECTIONAL
VALVE ENVELOPES VALVE PORTS
FLUID CONDITIONERPUMP OR MOTOR
FLUID POWER SYMBOLS
UNIDIRECTIONAL
BIDIRECTIONAL
RELEASED PRESSURE
EXTERNAL RETURN INTERNAL RETURN
REMOTE SUPPLY PRESSURE
SIMPLIFIED
HYDRAULIC PUMPS
ACCUMULATORS
SPRING LOADED GAS CHARGED
SOLENOID
OR MANUAL
SOLENOID
& PILOT
SOLENOID &
PILOT OR MANUAL
SOLENOID SERVO THERMAL DETENT
HYDRAULIC & PNEUMATIC CYLINDERS
DOUBLE ACTINGSINGLE ACTING
BASIC
SYMBOL
SPRING
LOADED
CHECK VALVES
2 POSITION
INFINITE
POSITIONING
FLOW IN ONE
DIRECTION
FLOW IN
EITHER
DIRECTION
3 POSITION
CROSS
FLOW
PARALLEL
FLOW
INTERNAL PASSAGEWAYS
NORMAL POSITION
AB
PT
AB
PT
SHIFTED POSITION INFINITE POSITION
CONTROL VALVES
ATTACHMENT
MANUAL SHUTOFF
SHUTTLE PILOT
CONTROLLED
MAIN AUX
LINE RESTRICTION
(VARIABLE & PRESSURE
COMPENSATED)
MANUAL CONTROL SYMBOLS
HYDRAULIC MOTORS
FLUID STORAGE RESERVOIRS
CROSSING & JOINING LINES
VALVES
PILOT CONTROL SYMBOLS
COMBINATION CONTROLS
BASIC COMPONENT SYMBOLS
ENERGY TRIANGLES
HYDRAULIC PNEUMATIC
INTERNAL
SUPPLY PRESSURE
COMPLETE
FIXED
DISPLACEMENT
VARIABLE DISPLACEMENT
NON-COMPENSATED
HYDRAULIC SYMBOLS (ELECTRICAL)
ELECTRICAL SYMBOLS TABLE
325-AG135 PK-14
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
WIRE
WIRE
(EXAMPLE VALVE)
CURRENT STANDARD
TRANSDUCER
(FLUID)
M
ELECTRIC MOTORTRANSDUCER
(GAS / AIR)
G
GENERATOR
PRESSURE SWITCH ELECTRICAL WIREPRESSURE SWITCH
(ADJUSTABLE)
TEMPERATURE
SWITCH
PRESSURE
SWITCH
TEMPERATURE
SWITCH
LEVEL
SWITCH
FLOW
SWITCH
ELECTRICAL SYMBOLS (ELECTRICAL)
A
CIRCUIT NUMBER
IDENTIFICATION
WIRE
COLOR
WIRE GAUGE
T
RENR7306-01
24 Page, (Dimensions: 34 inches x 28 inches)
MACHINE COMPONENT LOCATIONS
Description
Part
Number
Machine
Location
Schematic
Location
Accumulator Gp 160-4138
Filter Gp - Oil
- Oil (Return)
- Case Drain
- Oil (Return)
185-0336
259-0681
6E-5534
234-4454
Motor Gp - Piston (Hydraulic Fan) 225-4613
Motor Gp - RH Travel 147-5784
Motor Gp - Swing (Front) 234-4525
Motor Gp - Swing (Rear) 234-4527
Pump - Gp - Piston (Main Hydraulic) 259-0782
Pump Gp - Gear (Pilot) 155-9222
Pump Gp - Piston (Fan Motor) 247-8968
Pump Gp - Piston (Swing) 259-0783
Sensor As - Pressure (Swing Pump) 221-8869
Swivel Gp 156-0622
Valve Gp - Check (Return) 201-9381
201-9382
Valve Gp - Control (Swing) 241-8928
Valve Gp - Main Control 230-0081
Valve Gp - Manifold & Reducing (Pilot Oil) 140-0736
Valve Gp - Swing Cushion 116-3420
Valve Gp - Travel Counterbalance RH 143-8067
1
5
6
7
8
9
11
12
13
14
15
16
17
18
20
21
22
23
24
25
26
28
E-4
B-7
B-7
B-7
B-7
B-6
F-6
F-3
F-4
B-5, E-1
B-4
B-4
B-3
B-3
E-5
C-2
C-7
E-4
D-2 thru D-7
E-4, E-5
E-3
E-4, E-5
Component Locations
Sensor As - Pressure (Main Pump) 221-8869 19 B-5
Cylinder Gp - Boom Note A 2 F-6
Cylinder Gp - Bucket Note A 3 F-7
Cylinder Gp - Stick Note A 4 F-7
NOTE A: Check the parts manual for the correct cylinder part number.
Valve Gp - Travel Counterbalance LH 143-8067 27 E-3
Motor Gp - LH Travel 147-5784 10 F-5
27
10
11
28
11
28
10
27
6
9
23
13
12
20
25
1
22
16
19
15
18
5
7
8
16
18
15
17
19
9
14
7
56
13
23
12
2620
1
25
8
22 24
21
24
21
2
2
4
3
24
3
26
17
14
MAIN PUMP GP
PILOT MANIFOLD
SWING PUMP GP
AA
BB
CC
DD EE
HH
25
14
14
19
FF GG
17
Tap Locations
Pressure, Sampling, and Sensor
Tap
Number
Description
Schematic
Location
AA Pilot Pump Delivery Pressure E-4
BB Front Pump Power Shift Pressure B-6
CC Front Pump Load Sensing Pressure B-5
DD Front Pump Delivery Pressure B-5
EE Rear Pump Delivery Pressure B-5
FF Rear Pump Load Sensing Pressure B-4
GG Rear Pump Power Shift Pressure B-4
HH Swing Pump Delivery Pressure C-3
LINE PATTERNS
Drain / Return Lines
Component Group
Pilot / Load Sensing Pressure
Pressure Line
Attachment
Air Line
CALLOUTS
Taps (Pressure, Sampling, Sensor - by letter)
Components (By number)
YY
52
DRAIN / RETURN TO TANK
HYDRAULIC CIRCUIT COLOR DESCRIPTIONS
MAIN PUMP OUTPUT
SWING PUMP OUTPUT
PILOT PUMP OUTPUT
RIGHT HAND TRAVEL MOTOR CONTROL CIRCUIT
FAN PUMP OUTPUT
MAIN PUMP LOAD SENSE PRESSURE
SWING BRAKE CONTROL CIRCUIT
DRAIN / RETURN TO SUPPLY
MAIN PUMP LOAD SENSE CIRCUIT
SUPPLY LINE
BUCKET CONTROL CIRCUIT
TRAVEL SPEED CONTROL CIRCUIT
STICK CYLINDER CONTROL CIRCUIT
LEFT HAND TRAVEL MOTOR CONTROL CIRCUIT
BOOM CYLINDER CONTROL CIRCUIT
SWING MOTOR CONTROL CIRCUIT
RENR7306-01
24 Page, (Dimensions: 34 inches x 28 inches)
THIS SCHEMATIC IS FOR THE 365C EXCAVATOR
MEDIA NUMBER: RENR7306-01
PART NUMBER: 230-2751, CHANGE: 04, VERSION: HE
HPC OFF, TRUE LOAD SIGNAL
PART NUMBER: 239-8660, CHANGE: 00, VERSION: HE
HPC ON, DUPLICATED LOAD SIGNAL
Components are shown installed on a fully operable machine.
Refer to the appropriate Service Manual for Troubleshooting, Specifications.
A
B
C
D
E
F
1234567
A
B
C
D
E
F
1234567
X
Part #239-8660, HPC-ON, Duplicated Load Signal
Part #230-2751 CHG 03, HPC-OFF, True Load Signal
D1
PS2g
STICK CYLINDERBUCKET CYLINDER BOOM CYLINDER
SWING MOTOR - RIGHT SWING MOTOR - LEFT
LS2g
LS2
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
BL4AL4BL3 AL3
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
LS2gLS2
PS2
PS2g
M2
SA2
P2
M2g
M1g
P1
SA1
M1
LS1g
LS1
PS1
PS1g
R1 D1 M1g' S1 M2g' D2 R2
Qmax QminQmax Qmin
PF
PR
PF
PR
LS
DR1
TRAVEL MOTOR - LEFT
TRAVEL MOTOR - RIGHT
MOTOR GP
RH TRAVEL
147-5784
PUMP GP
GEAR
(PILOT)
155-9222
PUMP GP
SWING
259-0783
SWIVEL GP
156-0622
MOTOR GP
LH TRAVEL
147-5784
VALVE GP
RH TRAVEL
COUNTERBALANCE
143-8067
VALVE GP
LH TRAVEL
COUNTERBALANCE
143-8067
MOTOR GP
SWING (REAR)
234-4527
MOTOR GP
SWING (FRONT)
234-4525
VALVE GP
SWING CUSHION
116-3420
VALVE GP
CONTROL
(SWING)
241-8928
PUMP GP
FAN MOTOR
247-8968
SENSOR AS
PRESSURE
(SWING PUMP)
221-8869
PUMP GP
PISTON
(MAIN HYDRAULIC)
259-0782
SENSOR AS
PRESSURE
(MAIN PUMP)
221-8869
MOTOR GP
PISTON
(HYDRAULIC FAN)
225-4613
FILTER GP
CASE DRAIN
6E-5534
FILTER GP
OIL (RETURN)
234-4454
FILTER GP
OIL (RETURN)
259-0681
HH
FILTER GP
OIL
185-0336
VALVE GP
CHECK
(RETURN)
201-9382
VALVE GP
MANIFOLD AND REDUCING
(PILOT OIL)
140-0736
ACCUMULATOR GP
160-4138
VALVE GP
MAIN CONTROL
230-0081
VALVE GP
CHECK
(RETURN)
201-9381
AA
DD EE
BB
CC
FF
GG
