Plano electrico Retroexcavadora CAT 420F.pdf

INTERACTIVE SCHEMATIC Bookmarks

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Features Cover Page Tables Component Connector 

Schematic Machine Views Chassis View Cab View Engine View

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EC-C2 EC-C3

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E-C60 E-C61

VIEW ALL CALLOUTS EC-C1

When only one callout is showing on a

SCHEMATIC SYMBOLS AND DEFINITIONS  VALVES

INTERNAL PASSAGEWAYS

ENVELOPES

One Position

Two Position

Three Position

PORTS

Two-way

Three-Way

FLOW IN ONE DIRECTION

FLOW ALLOWED IN EITHER DIRECTION

Infinite Positioning

Two Position

PARALLEL FLOW

PUMPS CROSS FLOW

Three Position

FIXED DISPLACEMENT DISPLACEMENT

Unidirectional

Bidirectional

Pump or Motor 

Variability

Fluid Conditioner 

Spring (Adjustable)

Spring

Pressure Compensation

Control Valves

Line Restriction (Variable)

Restriction

Line Restriction (Fixed)

Line Restriction Variable and Pressure Compensated

2-Section Pump

Attachment

Pump: Variable and Pressure Compensated

VARIABLE DISPLACEMENT NON- COMPENSATED

CYLINDERS

Four-Way

BASIC HYDRAULIC COMPONENT SYMBOLS

Unidirectional

Bidirectional

CONTROL  A B

 A B

P T

P T

Normal Position

Single Acting

Double Acting

MOTORS FIXED DISPLACEMENT DISPLACEMENT

Shifted Position

Infinite Position

CHECK

 ACCUMULATORS Basic Symbol

Spring Loaded

Shuttle

Unidirectional

Bidirectional

VARIABLE DISPLACEMENT NON- COMPENSATED

Pilot Controlled

Spring Loaded Gas Charged

Unidirectional

Bidirectional MAIN  AUX.

PILOT CONTROL RELEASED PRESSURE

ROTATING SHAFTS

Unidirectional

External Return

Internal Return

Bidirectional

REMOTE SUPPLY PRESSURE

Simplified

Complete

Internal Supply Pressure

Hydraulic Pneumatic Energy Triangles

COMBINATION CONTROLS LINES Solenoid

Solenoid

Solenoid and

Servo

MEASUREMENT

SCHEMATIC SYMBOLS AND DEFINITIONS  VALVES

INTERNAL PASSAGEWAYS

ENVELOPES

One Position

Two Position

Three Position

PORTS

Two-way

Three-Way

FLOW IN ONE DIRECTION

FLOW ALLOWED IN EITHER DIRECTION

Infinite Positioning

Two Position

PARALLEL FLOW

PUMPS CROSS FLOW

Three Position

FIXED DISPLACEMENT DISPLACEMENT

Unidirectional

Bidirectional

Pump or Motor 

Variability

Fluid Conditioner 

Spring (Adjustable)

Spring

Pressure Compensation

Control Valves

Line Restriction (Variable)

Restriction

Line Restriction (Fixed)

Line Restriction Variable and Pressure Compensated

2-Section Pump

Attachment

Pump: Variable and Pressure Compensated

VARIABLE DISPLACEMENT NON- COMPENSATED

CYLINDERS

Four-Way

BASIC HYDRAULIC COMPONENT SYMBOLS

Unidirectional

Bidirectional

CONTROL  A B

 A B

P T

P T

Normal Position

Single Acting

Double Acting

MOTORS FIXED DISPLACEMENT DISPLACEMENT

Shifted Position

Infinite Position

CHECK

 ACCUMULATORS Basic Symbol

Spring Loaded

Shuttle

Unidirectional

Bidirectional

VARIABLE DISPLACEMENT NON- COMPENSATED

Pilot Controlled

Spring Loaded Gas Charged

Unidirectional

Bidirectional MAIN  AUX.

PILOT CONTROL RELEASED PRESSURE

ROTATING SHAFTS

Unidirectional

External Return

Internal Return

Bidirectional

REMOTE SUPPLY PRESSURE

Simplified

Complete

Internal Supply Pressure

Hydraulic Pneumatic Energy Triangles

COMBINATION CONTROLS LINES Solenoid

Solenoid

Solenoid and

Servo

MEASUREMENT

UENR5149  April 2015

420F2, 428F2, 430F2, 432F2, 434F2 and 444F2 Backhoe Loader  Electrical System 420F2: LYB1-UP

428F2: LYG1-UP

430F2: LYD1-UP

432F2: LYJ1-UP

COMPONENT TABLE Component Location Schematic Location C-8

Machine Location 1

J-3

2

Control - FNR Autoshift

F-10

3

Control - FNR Manual

F-11

4

Diode - Washer 

D-10

5

ECM - Machine

J-8

6

Ground - Control

G-7

7

Ground - ECM Cab

E-9

8

Ground - Low er Cab

G-7

9

Handle - LH Operator 1

H-16

10

Handle - LH Operator 2

G-16

11

Joystick - Mech Loader 

B-8

12

Joystick - Pilot Loader 

B-8

13

Keypad - Antitheft

D-16

14

Motor - Air Seat

B-4

15

Motor - Front Washer 

D-10

16

Motor - Front Wiper 

D-10

17

Motor - Heated Air Seat

B-3

18

Motor - Rear Washer 

D-10

19

Port - Pow er 

F-16

20

Component

Base - Loader Joystick Board - Pow er Distribution

 

COMPONENT TABLE Component Location (Volume 2) Schematic Location

Machine Location

Schematic Location

Machine Location

 Alarm - Backup

G-16

53

Suppressor - Quick Coupler Arc #4

B-13

101

Control - AWS

D-13

Control - Product Link (PL631, Cellular Radio)

E-5

54

Suppressor - Quick Coupler Arc #5

B-13

102

55

Suppressor - Ride Control Arc

C-10

103

Control - Product Link (PL641, Cellular Radio) Diode - Blocking #2

D-5

149

Suppressor - Side Shift (Left)

G-12

105

H-12

56

Suppressor - Side Shift ( Right)

G-12

Diode - Side Shift #1

106

F-12

57

Suppressor - Side Shift Lock (SS Only)

H-15

107

Diode - Side Shift #2

F-12

58

Sw itch - AWS Mode

D-15

108

Ground - Cab RF

F-1

59

Sw itch - Blow er Speed

B-8

109

Handle - Operator (7th Function, E-Stick)

J-15

60

Sw itch - Broom Angle

 A-16

110

Horn - Rear 

G-16

61

Sw itch - Continuous Flow

 A-16

111

Motor - Blow er 

 A-8

62

Sw itch - Crab Circle

D-15

112

Motor - Face Fan 1

H-5

147

Sw itch - Door 

H-3

113

Motor - Face Fan 2

H-5

148

Sw itch - External Pow er 

B-15

114

Motor - Wiper A ssembly (Rear)

E-3

63

Sw itch - Float Detent

H-9

115 116

Component

Component

Port - Pow er #2

J-5

64

Sw itch - HBCV Detent

C-6

Relay - A ntitheft #1

C-4

65

Sw itch - Heater A/C

B-8

117

Relay - A ntitheft #2

B-4

66

Sw itch - Loader Quick Coupler Pins

B-15

118

Resistor - Motor Speed

 A-8

67

Sw itch - Return To Dig

I-3

119

Sensor - Axle Position (Front)

C-16

68

Sw itch - Stability Pressur e

F-6

120

Sensor - Axle Position (Rear)

C-10

69

Sw itch - Stability Warning

E-10

121

Sensor - Ride Control

B-10

72

Sw itch - Thermostat

 A-8

122

Sensor - Stabilizer Leg (LH)

G-15

73

Switch - Vent

B-7

123

Sensor - Stabilizer Leg (RH)

F-15

74

Valve - AWS

E-9

124

Solenoid - HBCV

C-6

77

Solenoid - Hoe Auxiliary Valve #1 (7th Function)

J-15

78

Diode - Reverse Solenoid

I-6

125

Transmission (Manual)

Solenoid - Hoe Auxiliary Valve #2 (7th Function)

J-15

79

Sensor - Converter Temperature

I-6

126

Solenoid - Implement Lockout (SS Only)

H-15

80

Sensor - Pump Discharge Pressure

I-8

127

Solenoid - Load Sense Dump Valve

J-10

N/A

Sensor - XMSN Speed (Out)

I-8

128

Solenoid - Loader Auxiliary Valve #1 (SS Only)

I-15

82

Solenoid - AWD

J-6

129 130

Solenoid - Loader Auxiliary Valve #2 (SS Only)

I-15

83

Solenoid - Differential Lock

J-6

 A-12

84

Solenoid - Forw ard (Low )

I-6

131

Solenoid - Lock Valve (LH)

I-10

85

Solenoid - Hydraulic Torque Limit

J-8

132

Solenoid - Lock Valve (RH)

I-10

86

Solenoid - Reverse

J-6

133

Solenoid - Loader Quick Coupler 

COMPONENT TABLE Component Location

 Alarm - Action 1

Schematic Location G-14

Machine Location 155

Schematic Location C-8

Machine Location 198

 Alarm - Ac tion 2

B-14

156

Solenoid - Secondary Loc k

H-6

199

 Alarm - Backup 1

F-8

 Alarm - Backup 2

C-8

157

Solenoid - Side Shift Lock

F-8

200

158

Solenoid - Wedge

H-6

201

 Alternator (120A)

C-2

159

Stud - Jump Start 1

D-3

202

Battery - STD 1 & HD 1

C-4

160

Stud - Jump Start 2

B-3

203

Battery - STD 2 & HD 2

B-4

161

Stud - Pow er 1

C-3

204

Cluster - Instrument 1

I-14

162

Stud - Pow er 2

B-3

205

Cluster - Instrument 2

C-14

163

Suppressor - HVAC

F-1

206

Clutch - A/C Compressor 

F-1

164

Suppressor - Pattern Changer 

C-8

207

Glow Plugs

C-1

165

Suppressor - Side Shift Lock

F-8

208

Ground - Cab Roof 

I-2

166

Sw itch - A/C Refr igerant Press ure

F-1

209

Ground - Engine

F-3

167

Sw itch - Air Filter 

E-2

210

Ground Strap - Cab / Frame / Engine 1

C-3

168

Sw itch - Battery Disconnect 1

C-4

211

Ground Strap - Cab / Frame / Engine 2

 A-3

169

Sw itch - Battery Disconnect 2

 A-4

212

Handle - LH Operator 1

B-8

170

Sw itch - Beacon 1

G-13

213

Handle - LH Operator 2

B-7

171

Sw itch - Beacon 2

B-13

214

Handle - RH Operator 

D-8

172

Sw itch - Cold Start Adv

D-2

215

Heater - Block (120V)

D-4

173

Sw itch - Control Flow (7-8) 1

I-13

216

Heater - Block (230V)

E-4

174

Sw itch - Control Flow (7-8) 2

E-13

217

Horn - Front

D-1

175

Sw itch - Control Pattern 1

H-13

218

Horn - Rear 

F-8

176

Sw itch - Control Pattern 2

D-13

219

Module - Bluetooth

J-6

177

Sw itch - Eco Mode 1

J-13

220

Module - Rear Quick Coupler Control

G-8

178

Sw itch - Eco Mode 2

E-13

221

Motor - Fuel Lift Pump

C-2

179

Sw itch - Engine Oil Pressure

E-2

222

Motor - Starter 

C-2

180

Sw itch - Front Work Lamp (ATCH) 1

I-13

223

Sender - Coolant Temperature

E-2

181

Sw itch - Front Work Lamp (ATCH) 2

C-13

224

Sender - Fuel Level

E2

182

Sw itch - Hazard 1

G 13

225

Component

 

 

Component

Solenoid - Pattern Changer 2

 

CONNECTOR TABLE Connector Location Connector Num ber 

Schematic Location

CONN 1

J-16

CONN 2

I-16

CONN 3

H-16

CONN 4

H-16

CONN 5

G-16, G-15

CONN 6

E-16

CONN 7

D-16

CONN 8

B-16

CONN 9

C-11

CONN 10

C-11

CONN 11

C-11

CONN 12

F-11

CONNECTOR TABLE Connector Location Connector Number 

Schematic Location

CONN 1

I-13

CONN 2

H-13

CONN 3

G-9

CONN 6

C-1

CONN 7

B-6

CONN 9

A-5

CONN 10

B-12

CONN 11

I-12

CONN 12

A-13

CONN 13

B-5

CONN 14

E-15

CONN 15

I-5

CONN 17

B-5

CONN 19

J-8, G-8

CONN 20

J-8, H-8

CONN 21

D-9

CONN 24

E-12, C-9, C-8

CONN 25

C-15

CONN 26

F-15

CONN 27

A-13

CONN 28

A-11

CONNECTOR TABLE

Connector Location Conne ctor Num be r 

Schematic Location

CONN 1

F-6, C-6

CONN 2

E-6, B-6

CONN 7

H-8

CONN 8

H-10, D-10

CONN 18

F-4

CONN 21

I-8

CONN 24

B-10

CONN 26

E-8

CONN 36

H-2

RH CAB/VALVE VIEW VIEW ALL CALLOUTS

23

24

CONN 6 *CONN 6 LOCATED BEHIND PANEL

VIEW OF AREA “A” (ROTATED FOR CLARITY)

CONN 1 CONN 2 CONN 3 CONN 4 CONN 5 CONN 10

A

RH CAB/CHASSIS VIEW VIEW ALL CALLOUTS

32

5

16

19

CONN 16 CONN 9

FRONT DASH VIEW CONN 21 27

VIEW ALL CALLOUTS

17

38

26

33

20

36

3

4

31

28 34 35 25 29

CAB INTERIOR VIEW VIEW ALL CALLOUTS

14

CONN 8 30

10

11

15

18

21

12

13

1

2

8

CONN 7 CONN 14 7 6 CONN 12 CONN 15

22

CONN 11 9 CONN 19

37

*37 NOT SHOWN

CONN 17 CONN 20

CONN 18 CONN 13

RIDE CONTROL WIRING VIEW ALL CALLOUTS

CONN 24

RIGHT HAND CONSOLE

CONN 10 CONN 32

77

116

91 92 72 103

RETURN TO DIG (SINGLE TILT) WIRING VIEW ALL CALLOUTS

119

LIFT ARM

CONN 39

RH FRAME

CONN 15

96

90

REAR VALVE AND FRAME WIRING VIEW ALL CALLOUTS

73

74

53

60

CONN 26

82 78

CONN 1 CONN 2 CONN 3 CONN 29 80

79 88

A

83

89

61

107

95

106 105

57

OBJECT HANDLING WIRING

99

58

87

93

94

OBJECT HANDLING WIRING VIEW ALL CALLOUTS

121 CONN 24

120

CONN 33

CONN 35

MANUAL XMSN WIRING VIEW ALL CALLOUTS

MANUAL SHIFTER

126 133 125

CONN 20 CONN 19

127 132

131

128

130 129

LOAD CHECK DISABLE WIRING VIEW ALL CALLOUTS

86 98 56

CONN 11

115

85 97

HVAC WIRING VIEW ALL CALLOUTS

117

109

123

122

67 62

CONN 7

HEADLINER AND ATTACHMENT WIRING CONN 136 CONN 36

VIEW ALL CALLOUTS

113

59 63 CONN 38 147

148

CONN 37 CONN 41

CONN 40

64 CONN 21 CONN 121 55 149 CONN 13 65 66 CONN 17 CONN 6 CONN 9

FRONT QUICK COUPLER WIRING 118

111

114

VIEW ALL CALLOUTS

110

DASH

102 101

CONN 31 84

CONN 27 CONN 28 CONN 30

CONN 12

100

AWS WIRING

112

VIEW ALL CALLOUTS

108 54

68 FRONT AXLE

CONN 52

CONN 25 CONN 14

124

69

AUTOSHIFT XMSN WIRING VIEW ALL CALLOUTS

140 143 146 137 134 144 142 136 VIEW OF AREA “C”

C

(ROTATED FOR CLARITY)

CONN 20 CONN 19 135 141

145 139 138

SS SIDE CONSOLE VIEW ALL CALLOUTS

163 156

231 CONN 24 221

240

217

CONN 8 219

229

226

214

224

237

238

232

233

RH ENGINE VIEW VIEW ALL CALLOUTS

183 227 181 159

174 173 203 202 CONN 61

205

180

164 168 169

204

209 206

REAR WIRING (428F & 434F AUTOSHIFT ONLY) VIEW ALL CALLOUTS

208 185

CONN 1

184 157

CONN 2 CONN 26

RH CONSOLE

RH FRAME

200 176

REAR WIRING (420F & 430F) VIEW ALL CALLOUTS

REAR WIRING (420F & 430F) VIEW ALL CALLOUTS

178

234

235

170

171

172

158 CONN 60

CONN 1 CONN 2

CONN 7 CONN 107

190

194

D 192

RH FRAME

195 197

196

198

193 207

VIEW OF AREA “D”

191

LH ENGINE VIEW

201

199

LH ENGINE VIEW VIEW ALL CALLOUTS

179 186 210 CONN 63

165

215 167

CONN 18

211

212 182 175

160 222

161 CONN 62

CP SIDE CONSOLE VIEW ALL CALLOUTS

162 155

230

220

239

216

CONN 8 218

228

225

213

223

236