Diagrama hidráulico interactivos para excavadoras 336DL Caterpillar

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INTERACTIVE SCHEMATIC
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EC-C3
EC-C2 E-C60
EC-C1
E-C61
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Pressure
Switch
Temperature
Switch
Level
Switch
Flow
Switch Circuit Breaker
T
ELECTRICAL SYMBOLS
Spring
(Adjustable)
Variability
Fluid
Conditioner
Pump
or Motor
BASIC HYDRAULIC
COMPONENT SYMBOLS
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2. SCHEMATIC SYMBOLS AND DEFINITIONS
HYDRAULIC SYMBOLS - ELECTRICAL
Transducer
(Fluid)
Transducer
(Gas / Air)
G
Generator Electrical
Wire
Pressure
Switch
M
Electric
Motor
Pressure Switch
(Adjustable)
Temperature
Switch
Pressure
Switch
Temperature
Switch
Level
Switch
Flow
Switch Circuit Breaker
T
ELECTRICAL SYMBOLS
Spring
Control
Valves
Restriction Line Restriction
(Fixed)
2-Section
Pump
MAIN AUX.
Spring
(Adjustable)
Variability
Line Restriction
(Variable)
Pressure
Compensation
Pump: Variable and
Pressure Compensated
Hydraulic Pneumatic
Energy Triangles
Fluid
Conditioner
Attachment
Pump
or Motor
BASIC HYDRAULIC
COMPONENT SYMBOLS
Line Restriction
Variable and Pressure
Compensated
Vented Pressurized Return Above Fluid Level Return Below Fluid Level
FLUID STORAGE RESERVOIRS
Pressure Temperature Flow
MEASUREMENT
Unidirectional Bidirectional
ROTATING SHAFTS
One Position Two Position Three Position
Two-way Three-Way Four-Way
ENVELOPES
PORTS
CONTROL
Basic
Symbol
Spring
Loaded
Normal Position
A B
P T
A B
P T
Shifted Position Infinite Position
Shuttle Pilot
Controlled
VALVES
CHECK
Solenoid
or Manual
Solenoid
and Pilot
Solenoid and
Pilot or Manual
Solenoid Servo Thermal Detent
COMBINATION CONTROLS
T
Fuse: A component in an electrical circuit that will open the circuit if too much current flows through it.
Switch (Normally Open): A switch that will close at a specified point (temp, press, etc.). The circle indicates
that the component has screw terminals and a wire can be disconnected from it.
Switch (Normally Closed): A switch that will open at a specified point (temp, press, etc.).
No circle indicates that the wire cannot be disconnected from the component.
Ground (Wired): This indicates that the component is connected to a grounded wire.
The grounded wire is fastened to the machine.
Ground (Case): This indicates that the component does not have a wire connected to ground.
It is grounded by being fastened to the machine.
Reed Switch: A switch whose contacts are controlled by a magnet. A magnet closes the contacts of
a normally open reed switch; it opens the contacts of a normally closed reed switch.
Sender: A component that is used with a temperature or pressure gauge.
The sender measures the temperature or pressure.
Its resistance changes to give an indication to the gauge of the temperature or pressure.
Relay (Magnetic Switch): A relay is an electrical component that is activated by electricity.
It has a coil that makes an electromagnet when current flows through it.
The electromagnet can open or close the switch part of the relay.
Solenoid: A solenoid is an electrical component that is activated by electricity.
It has a coil that makes an electromagnet when current flows through it.
The electromagnet can open or close a valve or move a piece of metal that can do work.
Magnetic Latch Solenoid: An electrical component that is activated by electricity and held latched by a
permanent magnet. It has two coils (latch and unlatch) that make electromagnet
when current flows through them. It also has an internal switch that places
the latch coil circuit open at the time the coil latches.
BASIC ELECTRICAL COMPONENT SYMBOLS
Push-pull Lever Pedal
General Manual Push Button Spring
Manual Shutoff
MANUAL CONTROL
External Return Internal Return
Simplified Complete
Internal
Supply Pressure
RELEASED PRESSURE
REMOTE SUPPLY PRESSURE
PILOT CONTROL
Spring Loaded Gas Charged
ACCUMULATORS
Crossing Joining
LINES
Double Acting
Single Acting
CYLINDERS
Unidirectional
Bidirectional
FIXED DISPLACEMENT
VARIABLE DISPLACEMENT
NON- COMPENSATED
PUMPS
Unidirectional
Bidirectional
Unidirectional
Bidirectional
FIXED DISPLACEMENT
VARIABLE DISPLACEMENT
NON- COMPENSATED
MOTORS
Unidirectional
Bidirectional
Two
Position
Infinite
Positioning
FLOW IN ONE
DIRECTION
FLOW ALLOWED IN
EITHER DIRECTION
Three
Position
CROSS
FLOW
PARALLEL
FLOW
INTERNAL PASSAGEWAYS
1
2
AG-C4
111-7898
L-C12
3E-5179
9X-1123
Component
Part Number
Pin or Socket Number
Part Number: for
Connector Plug
Harness Identification Letter(s): (A, B, C, AA, AB, AC, ...)
Plug
325-AG135 PK-14
Wire Color
Wire Gauge*
Receptacle
1
1
2
2
Sure-Seal connector: Typical representation
of a Sure-Seal connector. The plug and receptacle
contain both pins and sockets.
Deutsch connector: Typical representation
of a Deutsch connector. The plug contains all
sockets and the receptacle contains all pins.
Fuse (5 Amps)
5A
Harness identification code:
This example indicates wire group 325,
wire 135 in harness "AG".
L-C12
3E-5179
Wire, Cable, or Harness Assembly Identification:
Includes Harness Identification Letters and Harness
Connector Serialization Codes (see sample).
Harness Connector Serialization Code: The "C" stands for
"Connector" and the number indicates which connector in the
harness (C1, C2, C3, ...)
HARNESS AND WIRE SYMBOLS
*Wire gauge is shown in AWG (American Wire Gauge)
but could also be shown in metric denoted with mm

3. Hydraulic System
© 2019 Caterpillar. All Rights Reserved. CAT, CATERPILLAR, LET’S DO THE WORK, their respective logos, “Caterpillar Yellow,” the “Power Edge”
and Cat “Modern Hex” trade dress, as well as corporate and product identity used herein, are trademarks of Caterpillar and may not be used without permission.
Heavy Lift and Fine Swing
November 2019
RENR9980-08
MAG1-UP
JRX1-UP
ZCT1-UP
WET1-UP
M4T1-UP
MYP1-UP
KDJ1-UP
J2F1-UP
PTB1-UP
T2Y1-UP
EDX1-UP
HAS1-UP
JLP1-UP
LRM1-UP
B6H1-UP
330D, 336D, and 336D2 Excavator
336D MHPU

4. COMPONENT LOCATION
Description
Machine
Location
Schematic
Location
Accumulator Gp 1
Cylinder Gp - Boom 2
Cylinder Gp - Bucket 3
Cylinder Gp - Stick 4
Filter Gp - Oil (Case Drain) 5
Filter Gp - Oil (Hydraulic Return) 6
Filter Gp - Oil (Pilot) 7
Manifold Gp - Control (Pilot Oil) 8
Motor Gp - Hydraulic Fan 9
Motor Gp - Swing 10
Motor Gp - Travel (Left) 11
Motor Gp - Travel (Right) 12
Pump Gp - Hydraulic Fan 13
Pump Gp - Main 14
Swivel Gp 15
Valve Gp - Check (Oil Cooler Bypass) 16
Valve Gp - Cushion (Crossover Relief) 17
Valve Gp - Load Control (Boom Drift Red, Relief Line) 18
Valve Gp - Load Control (Stick Drift Red, Relief Line) 19
Sensor As - Pressure (Hydraulic Pump #1 Outlet) 30
Sensor As - Pressure (Hydraulic Pump #2 Outlet) 31
Switch As - Pressure (Implement, Swing) 32
Switch As - Pressure (Travel, LH) 33
Switch As - Pressure (Travel, RH) 34
Valve Gp - Main Control 20
Valve Gp - Pilot (Travel) 21
Valve Gp - Pilot Control (Left Joystick) 22
Valve Gp - Pilot Control (Right Joystick) 23
Valve Gp - Pressure Reducing (Boom, Swing Priority) 24
Valve Gp - Shuttle 25
Valve Gp - Shuttle 26
Valve Gp - Solenoid (Heavy Lift) 27
Valve Gp - Travel (Counterbalance) (Left) 28
Valve Gp - Travel (Counterbalance) (Right) 29
A-5
E-2
E-7
E-7
A-5
A-6
A-4
A-6
A-7
E-5
E-5
E-3
B-3
B-2
D-4
A-7
D-6
D-2
C-5
A-2
B-2
B-7
D-7
D-7
C-2
D-7
C-7
C-6
B-4
B-7
B-4
A-4
D-5
D-3

5. TAP LOCATION
Tap
Number
Description
Schematic
Location
AA Pilot Filter Pressure Test Port A-6
BB Drive Pump Pressure Test Port B-2
CC Power Shift Pressure Test Port A-2
SOS Hydraulic Oil Sampling Port A-5
DD Idler Pump Pressure Test Port A-2

6. LINE PATTERNS
Drain / Return Lines
Component Group
Air Line
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
Connectors (By letter)
DL DL D
Do not operate or work on this product unless you have
read and understood the instruction and warnings in the
relevant Operation and Maintenance Manuals and
relevant service literature. Failure to follow the instruc-
tions or heed the warnings could result in injury or
death. Proper care is your responsibility.
Components are shown installed on a fully operable machine with the key and engine off.
Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations.
SCHEMATIC PART NUMBER: 259-7414, CHANGE: 02, VERSION: HE
THIS SCHEMATIC IS FOR THE 330D, 336D AND 336D2 EXCAVATOR, AND 336D MHPU
HYDRAULIC SYSTEM / WITH HEAVY LIFT AND FINE SWING
MEDIA NUMBER: RENR9980-08
Refer to the Parts Manual using a specific serial number prefix in SIS before ordering parts from this schematic.
A
B
C
D
E
1
2
3
4
5
6
7
A
B
C
D
E
1
2
3
4
5
6
7
HYDRAULIC CIRCUIT COLOR DESCRIPTIONS
PILOT PUMP OUTPUT
IMPLEMENT AND LEFT TRAVEL PUMP OUTPUT
HEAVY LIFT CONTROL CIRCUIT
FAN PUMP OUTPUT
POWER SHIFT CONTROL CIRCUIT
SUPPLY LINE
STICK CONTROL AND STICK CYLINDER CIRCUIT
LEFT TRAVEL CONTROL AND LEFT TRAVEL MOTOR CIRCUIT
ATTACHMENT CONTROL CIRCUIT
SWING CONTROL AND SWING MOTOR CIRCUIT
DRAIN / RETURN LINE
IMPLEMENT AND RIGHT TRAVEL PUMP OUTPUT
TRAVEL SPEED CONTROL CIRCUIT
BUCKET CONTROL AND BUCKET CYLINDER CIRCUIT
RIGHT TRAVEL CONTROL AND RIGHT TRAVEL MOTOR CIRCUIT
BOOM CONTROL AND BOOM CYLINDER CIRCUIT
AA SOS
DD
BB
CC
(4) CYLINDER GP
STICK
(14) PUMP GP
MAIN
(31) SENSOR AS -
PRESSURE
(HYDRULIC PUMP #2 OUTLET)
(30) SENSOR AS -
PRESSURE
(HYDRULIC PUMP #1 OUTLET)
(3) CYLINDER GP
BUCKET (2) CYLINDER GP
BOOM
(26) VALVE GP
SHUTTLE
(7) FILTER GP
OIL (PILOT)
(27) VALVE GP
SOLENOID
(HEAVY LIFT)
(24) VALVE GP
PRESSURE REDUCING
(BOOM, SWING
PRIORITY)
(1) ACCUMULATOR GP
(8) MANIFOLD GP
CONTROL (PILOT OIL)
(6) FILTER GP
OIL (HYDRAULIC RETURN)
(9) MOTOR GP
HYDRAULIC FAN
(16) VALVE GP
CHECK (OIL COOLER BYPASS)
(18) VALVE GP
LOAD CONTROL
(BOOM DRIFT RED, RELIEF LINE)
(20) VALVE GP
MAIN CONTROL
(28) VALVE GP
TRAVEL (COUNTERBALANCE) (LEFT)
(10) MOTOR GP
SWING
(11) MOTOR GP
TRAVEL (LEFT)
(17) VALVE GP
CUSHION (CROSSOVER RELIEF)
(21) VALVE GP
(25) VALVE GP
SHUTTLE
(32) SWITCH AS
PRESSURE (IMPLEMENT,
SWING)
(33) SWITCH AS
PRESSURE
(TRAVEL, LH)
(34) SWITCH AS
PRESSURE
(TRAVEL, RH)
(22) VALVE GP
PILOT CONTROL
(LEFT JOYSTICK)
(23) VALVE GP
PILOT CONTROL
(RIGHT JOYSTICK)
(12) MOTOR GP
TRAVEL (RIGHT)
(29) VALVE GP
TRAVEL COUNTERBALANCE (RIGHT)
(15) SWIVEL GP
(5) FILTER GP
OIL (CASE DRAIN)
(19) VALVE GP
LOAD CONTROL
(STICK DRIFT RED,
RELIEF LINE)
PILOT (TRAVEL)
(13) PUMP GP
HYDRAULIC FAN
AL3 BL3
AR3 BR3
AR4 BR4
bR1 aR1
aL1 bL1
TRAVEL (L) TRAVEL (R)
T1 T5
BACK
FWD
BACK FWD
TT
TP
T2 T4 T6 T3
aR3 aR4 bR3 bR4 bL3 bL2 bL4 aL2
JLP
JLT
STICK SWING
OUT
JL1
IN
JL3
R L
JL2 JL4
BUCKET BOOM
OPEN CLOSE DOWN UP
JR1
JR2 JR3
JR4
A1 A2 A3 A4 A5 A6 A7 A8
B1 B2 B3 B4 B5 B6 B7 B8
JRT
JRP
R.C.V.: A
R.C.V.: B
R.C.V.: C
A
C
B
D
DR1
DR
B A
L3 L2
E F
G
IN
OUT
T
T P
A
B
A B
AG
Pp3
Pp3
T1
T2
T1
T2
BG
BG AG
358-5973
BL1 AL1 BR1 AR1
AL2
BL2
PG
DR
MU
BG AG
B A
A1
B1
R.C.V.-C
P2 Pi1 DR1
DR2
DR3 DR4 DR5 DR6
P-IN PSA1
PSA2
T-OUT1
T-OUT2
Pi2
#1
(TRAVEL)
#2
(SWING)
#3
(LOCK)
P1
PAC
bL3
bL4 bL2
aL2
bR4 HR
aR4
bR3
aR3
aL1
bL1
aR1
bR1
R.C.V.: B
R.C.V.: A
AL2
BL2 BL1
AL1 AR1
BR1
BR4
AR4
BR3 AR3
AL3
BL3
PR
PR
PL
PL
HL
HL
HR
LEFT
PUMP
RIGHT
PUMP
A
P1 P2
Di2
BOOM
(2)
Di3
Pi2 Pi3
A1 B2 A2
T
S
B
L
L1
A4 S1
Dr1
D1 Ps2
D0 Ps1
Pi1
a4
a1
M1
Psv
a3
M2
a5
a2
Pi2
DST Pi5 bR2 Di1 bR5
BR4
BP1BT
R1
BR5
AR5
aR5
R3
IN
BP3
BDr
BPi BP2
Pi1
DOWN
CLOSE
AR2
BR2
aR2
BACK
BACK
Di4 Pi4
L
IN
aL3
SP1 ST
BL3 R2
T AL4 aL4
UP
SP3
SDr
SPi SP2
STICK
(1)
SWING
TRAVEL
(L)
TRAVEL
(R)
ATCH
BUCKET
OPEN
FWD
R
OUT
BOOM
(1)
STICK
(2)
OUT
UP
PG PC
322-8733
260-2180
260-2180
123-2430
158-8987
121-6303
310-0210
164-6981
215-5037
188-4140
234-4638
190-7745
255-5683
285-1345
204-2819
200-3373
271-6376
322-8716
185-0462
309-5769
309-5769
309-5769
297-0533
297-0532
204-2819
234-4440
289-8194
255-5680
271-6376
357-4704
357-9767
310-0414
R.C.V.: RETURN CHECK VALVE
259-0815

7. FILTERS
6
7
AA
SOS
VIEW ALL CALLOUTS

8. MACHINE COMPONENT LOCATIONS
1
2
3
4
8
13
14
16
17
32 33 34
21
22 23
24
25
26
27
VIEW ALL CALLOUTS
VIEW ALL CALLOUTS

9. MOTOR GP - SWING AND SWIVEL
10
15
VIEW ALL CALLOUTS
VIEW ALL CALLOUTS

10. MOTOR GP - TRAVEL
RIGHT SIDE SHOWN
11
12
28
29
VIEW ALL CALLOUTS
VIEW ALL CALLOUTS

11. PUMP GP - MAIN
5
9 30
31
BB CC
DD
VIEW ALL CALLOUTS
VIEW ALL CALLOUTS

12. VALVE GP - MAIN CONTROL
18 19
20
VIEW ALL CALLOUTS
VIEW ALL CALLOUTS