226b3 Esquema Hidraulico

Prévia do material em texto

216B3, 226B3, 236B3, 242B3, 247B3,
Hydraulic System
and Compact Track Loader
252B3, 257B3, and 259B3
Skid Steer Loader, Multi-terrain Loader,
Volume 1 of 2: Base Machines
© 2016 Caterpillar, All Rights Reserved Printed in U.S.A.
UENR3952-02
July 2016
226B3:
SNA1-UP
MWD3011-UP
DXZ1-UP
AS21-UP
236B3:
A9H1730-UP
242B3:
SRS1330-UP
216B3:
PWK1-UP
JXM2283-UP
DSN1-UP
HR21-UP
CD31-UP
252B3:
TNK1162-UP
257B3:
B7H1036-UP
259B3:
YYZ2038-UP
247B3:
ESL1-UP
TSL946-UP
KB31-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)
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
A B
P T
A B
P T
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
U
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3
9
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VIEW OF AREA “B”
(ROTATED FOR CLARITY)
B
VIEW OF AREA “A”
(ROTATED FOR CLARITY)
A
2
3
4
56
7
8
13
12
14
15
18
19
24
25
9
11BB
HH GG
AA
DD
FF
1 10 20
21
22 23
CC
EEMACHINE - FRONT VIEW
Description Part
Number
Schematic
Location
Machine
Location
Accumulator 149-0686 D-1 1
Cooler As - Radiator (216) 361-4662
Cooler As - Radiator (226/247) 361-4663
Cooler As - Radiator (236/242/252/257/259) 361-4665
Coupling - Female 193-8335 F-2 3
Coupling - Male 193-8334 F-2 4
Cylinder Gp - Lift (Left Hand) (216/226/247) 293-5706
Cylinder Gp - Lift (Left Hand) (236) 295-6952
Cylinder Gp - Lift (left Hand) (242/257/259) 329-4955
Cylinder Gp - Lift (Left Hand (252) 297-8699
Cylinder Gp - Lift (Right Hand) (216/226/247) 293-5705
Cylinder Gp - Lift (Right Hand) (236) 295-6951
Cylinder Gp - Lift (Right Hand) (242/257/259) 329-4955
Cylinder Gp - Lift (Right Hand) (252) 297-8699
Cylinder Gp - Tilt (Left Hand) (216/226/247) 293-5708
Cylinder Gp - Tilt (Left Hand) (236/252) 295-6954
Cylinder Gp - Tilt (Left Hand) (242/257/259) 329-4954
Cylinder Gp - Tilt (Right Hand) (216/226/247) 293-5707
Cylinder Gp - Tilt (Right Hand) (236/252) 295-6953
Cylinder Gp - Tilt (Right Hand) (242/257/259) 329-4953
Filter Gp - Oil 223-9974 C-3 9
Manifold As - Drain Manifold 308-0421 D-3 10
Motor Gp - Fan (Standard) 307-3036 C-2 11
Motor Gp - Single Speed (Left Hand) (216/226/242) 280-7854
Motor Gp - Single Speed (Left Hand) (236/252) 358-4982
Motor Gp - Single Speed (Left Hand) (247/257) 289-6355
Motor Gp - Single Speed (Right Hand) (216/226/242) 280-7854
Motor Gp - Single Speed (Right Hand) (236/252) 358-4982
Motor Gp - Single Speed (Right Hand) (247/257) 289-6355
Pump Gp - Implement and Charge (216/226/247) (Quiet) 269-9462
Pump Gp - Implement and Charge (216/226/247) (Standard) 236-5106
Pump Gp - Implement and Charge (236/242/252/257/259) (Quiet) 289-6358
Pump Gp - Implement and Charge (236/242/252/257/259) (Standard) 238-7642
Pump Gp - Single Speed (216) 398-7470
Pump Gp - Single Speed (226/247) 398-7472
Pump Gp - Single Speed (236/252) 307-3070
Pump Gp - Single Speed (242/257) 341-7642
Switch As - Pressure (Back Up Alarm) 192-0836 D-7 18
Tank Gp - Hydraulic 326-5781 B-2 19
Valve Gp - Ball (Manual Loader Lowering Valve) 112-1817 F-4 20
Valve Gp - Brake (Single Speed) (216/226/242/247/257) 248-1268
Valve Gp - Brake (Single Speed) (236/252) 233-7131
Valve Gp - Check 123-4750 B-6 22
Valve Gp - Control (216/226/247) 336-1317
Valve Gp - Control (236) 336-1319
Valve Gp - Control (242/252/257/259) 336-1320
Valve Gp - Implement Pilot Control (With Float Detent Magnet) 299-9119 F-6 24
Valve Gp - S-Turn Resolver Block (Drive Pilot) (216/226/236/242/252) 356-5008
Valve Gp - S-Turn Resolver Block (Drive Pilot) (247/257) 356-5009
Valve Gp - S-Turn Resolver Block (Drive Pilot) (259) 356-5010
F-8 25
B-4 13
C-6 21
E-3 23
C-1 2
F-3 5
F-3 6
F-2 7
F-2 8
C-7 12
A-3 14
A-4 15
Component Locations (Volume 1)
MACHINE - REAR VIEW
MAIN HYDRAULICS - RIGHT SIDE VIEW
Tap Locations
Pressure, Sampling, and Sensor
Tap
Number Description Schematic
Location
AA Main Work tool System Pressure E-3
BB SOS C-2
CC Signal Pressure C-6
DD Main System Pressure (Pump 1 Forward) B-6
EE Charge Pressure B-6
FF Main System Pressure (Pump 2 Forward) B-5
GG Main System Pressure (Pump 2 Reverse) A-5
HH Main System Pressure (Pump 1 Reverse) A-6
Description Media Number
Specifications UENR0249
Testing and Adjusting UENR0250
Schematic: (Electrical System) UENR0254
Related Manuals
Parts Manual
Machine System
Electrical System
U
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Components are shown installed on a fully operable machine with the key and engine off, transmission shifter in neutral and with parking brake set.
Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations.
VOLUME 1 of 2: BASE MACHINES
SCHEMATIC PART NUMBER: 326-5540, CHANGE: 04, VERSION: -
THIS SCHEMATIC IS FOR THE 216B3, 226B3, 236B3, 242B3, 247B3, 252B3, 257B3, AND 259B3
SKID STEER LOADER, MULTI-TERRAIN LOADER, AND COMPACT TRACK LOADER HYDRAULIC SYSTEM
MEDIA NUMBER: UENR3952-02
Refer to the Parts Manual using a specific serial number prefix in SIS before ordering parts from this schematic.
12345678
A
B
C
D
E
F
12345678
A
B
C
D
E
F
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
Connectors (By letter)DL DL D
Air Line
HYDRAULIC CIRCUIT COLOR DESCRIPTIONS
PILOT CONTROL CIRCUIT
MAIN PUMP OUTPUT
TILT CYLINDER CONTROL CIRCUIT
SUPPLY LINE
BRAKE CONTROL CIRCUIT
LEFT HYDROSTATIC PUMP CIRCUIT
AUXILARY TOOLS CONTROL CIRCUIT
DRAIN/ RETURN LINE
CHARGE SUPPLY PUMP CIRCUIT
RIGHT HYDROSTATIC PUMP CIRCUIT
LIFT CYLINDER CONTROL CIRCUIT
(20) VALVE GP
BALL
(MANUAL LOADER LOWERING VALVE)
(6) CYLINDER GP
LIFT (RIGHT HAND) (7) CYLINDER GP
TILT (LEFT HAND)
(8) CYLINDER GP
TILT (RIGHT HAND)
(3) COUPLING
FEMALE
(4) COUPLING
MALE
(1) ACCUMULATOR
(23) VALVE GP
CONTROL
(9) FILTER GP
OIL (11) MOTOR GP
FAN (STANDARD)
(2) COOLER AS
RADIATOR
(19) TANK GP
HYDRAULIC
(14) PUMP GP
IMPLEMENT AND CHARGE
(15) PUMP GP
SINGLE SPEED
(22) VALVE GP
CHECK
(21) VALVE GP
BRAKE
(SINGLE SPEED)
(25) VALVE GP
S-TURN RESOLVER BLOCK
(DRIVE PILOT) (24) VALVE GP
IMPLEMENT PILOT CONTROL
(WITH FLOAT DETENT MAGNET)
(18) SWITCH AS
PRESSURE
(BACK UP ALARM)
(5) CYLINDER GP
LIFT (LEFT HAND)
(10) MANIFOLD AS
DRAIN MANIFOLD
(13) MOTOR GP
SINGLE SPEED
(RIGHT HAND)
(12) MOTOR GP
SINGLE SPEED
(LEFT HAND)
FF
AA
BB
CC
DD EE
GGHH
LIFT CYLINDERS
112-1817
293-5705 (216/226/247)
295-6951 (236)
329-4955 (242/257/259)
297-8699 (252)
293-5708 (216/226/247)
295-6954 (236/252)
329-4954 (242/257/259)
293-5707 (216/226/247)
295-6953 (236/252)
329-4953 (242/257/259)
193-8335
193-8334
149-0686
336-1317 (216/226/247)
336-1319 (236)
336-1320 (242/252/257/259)
223-9974
307-3036
361-4662 (216)
361-4663 (226/247)
361-4665 (236/242/252/257/259)
326-5781
269-9462 (216/226/247) (QUIET)
236-5106 (216/226/247) (STANDARD)
289-6358 (236/242/252/257/259) (QUIET)
238-7642 (236/242/252/257/259) (STANDARD)
398-7470 (216)
398-7472 (226/247)
307-3070 (236/252)
341-7642 (242/257)
123-4750
248-1268 (216/226/242/247/257)
233-7131 (236/252)
BAFFLE
NEUTRALNEUTRAL
FORWARDREVERSE
NEUTRAL NEUTRAL
LOWER RAISE
DRIVE PILOT VALVE
IMPLEMENT PILOT VALVE
TILT CYLINDERS
AUXILIARY TOOLS
RIGHTLEFT RACKDUMP
1P T 324
31 2 4
E
D
F
C
P TDCF E
G
CIMRML
COTRJ
HP
DRAIN
DL
ZB A L
LEFT
MOTOR
T1R MG G1A AMB GB B MB R
C
T P
MAX3 X4
LR LF
FWD
X3MA
FWD
RF RR
X4
1A 1B 2A 2B 3A 3B
RIGHT
MOTOR
L A BZ
Y
M
SOS/
SPEED
SENSING
DIAGNOSTIC PORT
356-5008 (216/226/236/242/252)
356-5009 (247/257)
356-5010 (259) 299-9119
192-0836
293-5706 (216/226/247)
295-6952 (236)
329-4955 (242/257/259)
297-8699 (252)
308-0421
280-7854 (216/226/242)
358-4982 (236/252)
289-6355 (247/257)
280-7854 (216/226/242)
358-4982 (236/252)
289-6355 (247/257)
216B3, 226B3, 236B3, 242B3, 247B3,
Hydraulic System
and Compact Track Loader
252B3, 257B3, and 259B3
Skid Steer Loader, Multi-terrain Loader,
Volume 2 of 2: Hydraulic Options
© 2016 Caterpillar, All Rights Reserved Printed in U.S.A.
UENR3952-02
July 2016
226B3:
SNA1-UP
MWD3011-UP
DXZ1-UP
AS21-UP
236B3:
A9H1730-UP
242B3:
SRS1330-UP
216B3:
PWK1-UP
JXM2283-UP
DSN1-UP
HR21-UP
CD31-UP
252B3:
TNK1162-UP
257B3:
B7H1036-UP
259B3:
YYZ2038-UP
247B3:
ESL1-UP
TSL946-UP
KB31-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)
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
A B
P T
A B
P T
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
U
E
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3
9
5
2
-0
2
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A
B
VIEW OF AREA “A”
(ROTATED FOR CLARITY)
VIEW OF AREA “B”
(ROTATED FOR CLARITY)
MACHINE - REAR VIEW
MAIN HYDRAULICS - RIGHT SIDE VIEWMACHINE - FRONT VIEW
30
34
35
36
37
39
41 40
46
48
52
54
58
AA
DD
FF
EE
HH GG
BB
33 32 38
42
45
47
31
5559
53 NOT
SHOWN
57
60
44
43
49
56
Description Part
Number
Schematic
Location
Machine
Location
Accumulator 149-0686 B-5 30
Coupling Gp (226/242/257/259) 345-5165 D-5 31
Cylinder Gp - Hydraulic Coupler (Left Hand) 192-2640 B-8 32
Cylinder Gp - Hydraulic Coupler (Right Hand) 192-2640 B-7 33
Cylinder Gp - Lift Left Hand (216/226/247) 293-5706
Cylinder Gp - Lift Left Hand (236) 295-6952
Cylinder Gp - Lift Left Hand (242/257/259) 329-4955
Cylinder Gp - Lift Left Hand (252) 297-8699
Cylinder Gp - Lift Right Hand (216/226/247) 293-5705
Cylinder Gp - Lift Right Hand (236) 295-6951
Cylinder Gp - Lift Right Hand (242/257/259) 329-4955
Cylinder Gp - Lift Right Hand (252) 297-8699
Cylinder Gp - Tilt Left Hand (216/226/247) 293-5708
Cylinder Gp - Tilt Left Hand (236/252) 295-6954
Cylinder Gp - Tilt Left Hand (242/257/259) 329-4954
Cylinder Gp - Tilt Right Hand (216/226/247) 293-5707
Cylinder Gp - Tilt Right Hand (236/252) 295-6953
Cylinder Gp - Tilt Right Hand (242/257/259) 329-4953
Motor Gp - A/C Compressor (226/247) 307-6115 A-7 38
Motor Gp - Fan (Demand) 258-2577 A-8 39
Motor Gp - Two Speed (Left Hand) (236/252) 358-4984
Motor Gp - Two Speed (Left Hand) (242) 307-3071
Motor Gp - Two Speed (Right Hand) (236/252) 358-4986
Motor Gp - Two Speed (Right Hand) (242) 307-3073
Motor Gp - Two Speed Left Hand (257) 307-3052 C-4 42
Motor Gp - Two Speed Left Hand (259) 373-8470 F-4 43
Motor Gp - Two Speed Right Hand (259) 373-8470 F-2 44
Motor Gp - Two Speed Right Hand (257) 307-3052 C-2 45
Pump Gp - Implement, Charge And Boost (226) (Standard) 225-9238
Pump Gp - Implement, Charge And Boost (226) (Quiet) 269-9465
Pump Gp - Implement, Charge, And Boost (242/257/259) (Quiet) 358-5001
Pump Gp - Two Speed (236/252) 307-3070
Pump Gp - Two Speed (242) 341-7665
Pump Gp - Two Speed (257) 341-7642 B-4 48
Pump Gp - Two Speed (259) 307-3068 D-2 49
Tank Gp - Hydraulic 326-5781 B-6 52
Valve Gp - Boost Flow (226/242/257/259) 359-7233 A-6 53
Valve Gp - Brake (Two Speed) (236/242/252) 293-6591 F-7 54
Valve Gp - Brake (Two Speed) (257) 293-6591 C-3 55
Valve Gp - Brake (Two Speed) (259) 293-6591 F-3 56
Valve Gp - Check (226/242/257/259) 373-6965 A-5 57
Valve Gp - Control (216/226/247) 336-1317
Valve Gp - Control (236) 336-1319
Valve Gp - Control (242/252/257/259) 336-1320
Valve Gp - Diverter (Bucket Leveling) - Raise (216/226/247)224-9418
Valve Gp - Diverter (Bucket Leveling) - Raise (236) 224-9408
Valve Gp - Diverter (Bucket Leveling) - Raise (242/252/257/259) 223-8418
Valve Gp - Hydraulic Coupler 233-7128 B-8 60
C-7
C-8
58
59
A-6
E-6
46
47
D-6
D-6
F-8
F-6
36
37
40
41
Component Locations (Volume 2)
D-6
D-6
34
35
Description Media Number
Specifications UENR0249
Testing and Adjusting UENR0250
Schematic: (Electrical System) UENR0254
Related Manuals
Parts Manual
Machine System
Electrical System
Tap
Number Description Schematic
Location
AA Maain WorkTool System Pressure C-7
BB SOS A-8
Main System Pressure (Pump 1 Forward) (236/242/252) E-7
Main System Pressure (Pump 1 Forward) (257) B-3
Main System Pressure (Pump 1 Forward) (259)
Charge Pressure (236/242/252)
Charge Pressure (257)
Charge Pressure (259)
Main System Pressure (Pump 2 Forward) (236/242/252)
Main System Pressure (Pump 2 Forward) (257)
Main System Pressure (Pump 2 Forward) (259)
Main System Pressure (Pump 2 Reverse) (236/242/252) D-6
Main System Pressure (Pump 2 Reverse) (257) A-3
Main System Pressure (Pump 2 Reverse) (259) D-3
Main System Pressure (Pump 1 Reverse) (236/242/252) D-7
Main System Pressure (Pump 1 Reverse) (257) A-3
Main System Pressure (Pump 1 Reverse) (259) D-3
GG
HH
Tap Locations
Pressure, Sampling, and Sensor
DD
EE
FF
E-3
E-3
E-3
B-3
B-3
E-7
E-6
U
E
N
R
3
9
5
2
-0
2
 V
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 2
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f 
2
3
0
 P
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, 
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: 
3
9
 i
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 x
 2
8
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Components are shown installed on a fully operable machine with the key and engine off, transmission shifter in neutral and with parking brake set.
Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations.
VOLUME 2 of 2: HYDRAULIC OPTIONS
SCHEMATIC PART NUMBER: 326-5540, CHANGE: 04, VERSION: -
THIS SCHEMATIC IS FOR THE 216B3, 226B3, 236B3, 242B3, 247B3, 252B3, 257B3, AND 259B3
SKID STEER LOADER, MULTI-TERRAIN LOADER, AND COMPACT TRACK LOADER HYDRAULIC SYSTEM
MEDIA NUMBER: UENR3952-02
Refer to the Parts Manual using a specific serial number prefix in SIS before ordering parts from this schematic.
12345678
A
B
C
D
E
F
12345678
A
B
C
D
E
F
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
Connectors (By letter)DL DL D
Air Line
HYDRAULIC CIRCUIT COLOR DESCRIPTIONS
MAIN PUMP OUTPUT
TILT CYLINDER CONTROL CIRCUIT
SUPPLY LINE
BRAKE CONTROL CIRCUIT
LEFT HYDROSTATIC PUMP CIRCUIT
AUXILARY TOOLS AND HIGH FLOW CONTROL CIRCUIT
DRAIN / RETURN LINE
CHARGE SUPPLY PUMP CIRCUIT
QUICK COUPLER CIRCUIT
RIGHT HYDROSTATIC PUMP CIRCUIT
LIFT CYLINDER CONTROL CIRCUIT
(54) VALVE GP
BRAKE
(TWO SPEED)
HH GG
HH
GG
DD
(47) PUMP GP
TWO SPEED
(36) CYLINDER GP
TILT (LEFT HAND)
(37) CYLINDER GP
TILT (RIGHT HAND)
(59) VALVE GP
DIVERTER
(BUCKET LEVELING) RAISE
(32) CYLINDER GP
HYDRAULIC COUPLER
(LEFT HAND)
(33) CYLINDER GP 
HYDRAULIC COUPLER 
(RIGHT HAND)
(53) VALVE GP
BOOST FLOW
(52) TANK GP
HYDRAULIC
(30) ACCUMULATOR
(58) VALVE GP
CONTROL
(56) VALVE GP
BRAKE
(TWO SPEED)
(49) PUMP GP
TWO SPEED
(55) VALVE GP
BRAKE
(TWO SPEED)
(42) MOTOR GP
TWO SPEED (LEFT HAND)
(45) MOTOR GP
TWO SPEED (RIGHT HAND)
(48) PUMP GP
TWO SPEED
(41) MOTOR GP
TWO SPEED
(RIGHT HAND)
(40) MOTOR GP
TWO SPEED
(LEFT HAND)
DD
EE
(44) MOTOR GP
TWO SPEED
(RIGHT HAND)
(43) MOTOR GP
TWO SPEED
(LEFT HAND)
DD
EE
FF
HH GG
EE
FF
(35) CYLINDER GP
LIFT (RIGHT HAND)
(34) CYLINDER GP
LIFT (LEFT HAND)
AA
(60) VALVE GP
HYDRAULIC COUPLER
(39) MOTOR GP
FAN (DEMAND)
(38) MOTOR GP
A/C COMPRESSOR (46) PUMP GP
IMPLEMENT, CHARGE AND BOOST
(57) VALVE GP
CHECK
(31) COUPLING GP
293-6591 (236/242/252)
FINAL
DRIVE
FF
307-3070 (236/252)
341-7665 (242)
293-5708 (216/226/247)
295-6954 (236/252)
329-4954 (242/257/259)
293-5707 (216/226/247)
295-6953 (236/252)
329-4953 (242/257/259)
224-9418 (216/226/247)
224-9408 (236)
223-8418 (242/252/257/259)
192-2640
192-2640
359-7233 (226/242/257/259)
326-5781
149-0686
336-1317 (216/226/247)
336-1319 (236)
336-1320 (242/252/257/259)
293-6591 (259)
307-3068 (259)
293-6591 (257)307-3052 (257) 307-3052 (257)
341-7642 (257)
358-4986 (236/252)
307-3073 (242)
C2
C1
P
T
TO DRAIN
MANIFOLD
358-4984 (236/252)
307-3071 (242)
LEFT
MOTOR
TO DRAIN
MANIFOLD
A B ZLX
TO IMPLEMENT VALVE
T1R
M
FWD
TO DRAIN
MANIFOLD
RIGHT
MOTOR
Z ABL X
MG G1A AMB GB Y B MB
FROM CHARGE
FILTER
TO DRIVE
PILOT
SPEED
SENSING
MAX3 X3MA X4
LR LF
X4
FWD
RF RR
FROM DRIVE JOYSTICK FROM DRIVE JOYSTICK
R
373-8470 (259)
373-8470 (259)
C1
C2
P
TTO DRAIN
MANIFOLDLEFT
MOTOR
FINAL
DRIVE
Ss Ps
P2
P1
Pp
Dr
TO DRAIN
MANIFOLD
RIGHT
MOTOR
P1
P2
Pp
Dr
SsPs
TO DRAIN
MANIFOLD
TO DRAIN
MANIFOLD
T1R
TO IMPLEMENT VALVE
MG G1A AMB GB Y B MB
TO DRIVE
PILOT
FROM
CHARGE
FILTER
SPEED
SENSING
FWD
MAX3
LR LF
X4
M
X3MA
RF RR
X4
R
FWD
FROM DRIVE JOYSTICK FROM DRIVE JOYSTICK
TWO SPEED (MODELS 236/242/252 )
TWO SPEED (MODEL 257)
AUXILIARY HIGH FLOW (226,242,257,259)
TWO SPEED (MODEL 259)
C1
C2
P
T
TO DRAIN
MANIFOLD
LEFT
MOTOR
FINAL
DRIVE
P1
P2
Pp
Dr Ps
RIGHT
MOTOR
FINAL
DRIVE
P1
P2
DrPs
Pp
TO DRAIN
MANIFOLDR
FWD
X3MA X4
RF RR
FROM DRIVE JOYSTICK FROM DRIVE JOYSTICK
MAX3 X4
LR LF
M
FWD
T1R
TO DRAIN
MANIFOLD
MG G1A AMB GB Y B MB
TO IMPLEMENT VALVE
SPEED
SENSING
TO DRIVE
PILOT
FROM
CHARGE
FILTER
FROM HYSTAT PUMP
LIFT CYLINDERS
TILT CYLINDERS
AUXILIARY TOOLS
293-5705 (216/226/247)
295-6951 (236)
329-4955 (242/257/259)
297-8699 (252)
293-5706 (216/226/247)
295-6952 (236)
329-4955 (242/257/259)
297-8699 (252)
BUCKET LEVELING
DIVERTER VALVE
ALL MODELS
C
A
D
B
FROM IMPLEMENT JOYSTICK
TO IMPLEMENT JOYSTICK
1A 1B 2A 2B 3A 3B
HYDRAULIC
COUPLER
ALL MODELS
FROM IMPLEMENT JOYSTICK
BAFFLE
S2 S1
C1C2
P T
233-7128
258-2577
TO DRAIN
MANIFOLD
DEMAND
FAN 
AC
COMPRESSOR
MOTOR TO DRAIN 
MANIFOLD
To Filter
To Cooler
SOS/ DIAGNOSTIC
PORT
BB
307-6115 (226/247)
225-9238 (226) (STANDARD)
269-9465 (226) (QUIET)
358-5001 (242/257/259) (QUIET)
P
AUX
T
TO DRAIN 
MANIFOLD
FROM DRAIN MANIFOLD
373-6965 (226/242/257/259)
345-5165
(226/242/257/259)