Linde E25 - Page 59

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Service Training

Section 2.6

Page 5

1 Freewheel diode

2 Braking diode (not used)

3 Zener diode

4 Diode

5 Ballast Zener diode

6 Leakage resistor

7 Zener diode

8 Protective diode

9 MOSFET transistor

10 Gate ballast resistor

Specifications:

Voltage: 80 V

Max. current: 350 A at 70 °C

Main Page

Table of Contents3
Linde Electric Fork Truck E 20 / 25 / 30 Series9
Drive - Motor9
- Traction Motor to 6/959
- Traction Motor from 7/9511
- Checking and Renewing the Traction Motor Brushes13
- Traction Motor Disassembling14
- Fan16
- Speed Sensor16
Drive - Gearbox17
- Drive Axle Removal18
- Drive Axle Disassembly and Assembly20
- Planetary Hub Reduction Gearbox (from 1/95 to 5/95)22
Removing the Planetary Hub Reduction Gearbox from the Traction Motor22
Disassembly of the Planetary Hub Reduction Gearbox22
Assembly of the Planetary Hub Reduction Gearbox22
Installing the Planetary Hub Reduction Gearbox on the Traction Motor23
- Planetary Hub Reduction Gearbox (from Series 6/95)24
Removing the Planetary Hub Reduction Gearbox from the Traction Motor24
Disassembly of the Planetary Hub Reduction Gearbox24
Assembly of the Planetary Hub Reduction Gearbox24
Mounting the Planetary Hub Reduction Gearbox on the Traction Motor24
- Drive Axle Installation26
Chassis29
- Seat Switch29
Renewing the Seat Switch30
- Cabin31
Torsion Bar Springs31
Removing and Installing the Torsion Bar Springs32
Steering System33
- Steering Axle34
Steering Axle Removal34
Steering Cylinder and Track Rod Link36
Renewing the Steering Cylinder Seals38
Renewing the Wheel Hub Tapered Roller Bearings and Shaft Sealing Ring40
Renewing the Axle Body Tapered Roller Bearings and Wipers42
Installing the Steering Cylinder and Track Rod Link44
Installing the Steering Axle46
- Power Steering Control Valve48
- Controls49
- Travel Control49
Accelerator Sensor49
Accelerator Sensor Output Signals51
Adjustment of the Neutral Position51
- Braking52
Renewing the Brake Linings52
Adjusting the Foot Brake52
Adjusting the Handbrake52
- Electrical System55
- Compact Power Module56
Traction Power Module56
Power Module for Lift Control58
Power Module Tests60
Installation of the Power Modules65
Arrangement of Control Panels in E 20 Models66
Arrangement of Control Panels in E 25 / E 30 Model67
Contactor Panels68
- Contactors70
Directional Contactors70
Regenerative Braking Contactor 1K572
Circuit Breaker Contactor 1K674
Testing the Protective Circuitry75
- Fuses76
Main Circuit Fuses in Model E 2076
Main Circuit Fuses in Model E 25 / E 3076
Installation of the Main Circuit Fuses77
Control Current Fuses in Model E 2078
Control Current Fuses in Model E 25 / E 3079
- Voltage Converter80
- Main Circuit Section Traction Control81
Current Path for Forward Travel Direction82
Current Path for Reverse Travel Direction83
Freewheel Circuit84
Brake Circuit Stage 185
- Electronic Traction Control Unit88
Power Supply90
Traction Enable92
Traction Enable to Series 6/9592
Traction Enable from Series 7/9593
Control of Direction Contactors95
Forward Direction of Travel96
Reverse Direction of Travel97
Single Pedal Models98
Modification to Single Pedal Model99
Driving Around Corners100
Sensors for Steering Position101
Handbrake Current103
Checking the Maximum Current and Handbrake Current103
Temperature Monitoring Traction Motors104
Temperature Monitoring with Thermal Switches to Series 6/95104
Temperature Monitoring with Thermal Sensors from Series 7/95105
Speed Reduction106
Regenerative Braking108
Speed Sensor in the Traction Motor109
Current Sensor110
- LTM Control for Working Hydraulic System and Steering112
Electronic Lift Control113
Power Supply114
Enable Signal, Thermal Switch and Cut-Off When Battery Is Discharged (to Series 6/95)115
Enable Signal, Thermal Sensor and Cut-Out with Discharged Battery (from Series 7/95)116
Control of the Various Work Functions117
Adjustments119
Control of Steering Function120
Operation of Speed Sensor 2B8121
Fans122
Fan Method of Operation until Series 6/95122
Fan Method of Operation from Series 7/95123
Location of Connectors124
- Location of Connectors Location of Connectors to Series124
Location of Connectors from Series 7/95126
Combined Instrument129
Indicator Lights129
Field Weakening Active Indicator Light (Option)130
Turn Signal Indicator Light (from Series 7/95)130
Parking Brake Warning Light (from Series 12/94)130
Brake Shoe Warning Light (Option)130
2.6.10.1.5 Motor Brush Warning Light130
Engine Temperature Warning Light (from Series 7/95)130
Travel Direction Indicator (Option)131
Hydraulic Oil Temperature Warning Light (Option)131
Hydraulic Oil Level Warning Light (Option)131
Fan Warning Light (from Series 7/95)131
2.6.10.1.11 Service Interval Indicator Light131
Battery Discharge Indicator132
Linde Diagnostic Unit134
Operation of the Diagnostic Unit in Connection with the Combined Instrument136
Programming of Menu Functions 11 to138
Resetting the Service Interval Indicator with Menu Function139
Programming and Reading the Service Hour Menu Functions 32 to140
Read-Out Functions with Menu Functions 41 to141
Brush Monitoring142
Traction Motor Switching Contacts143
Working Hydraulics Pump Motor Switching Contacts143
Wiring Diagram144
Wiring Diagram to Series 6/95144
Wiring Diagram from Series 7/95148
Hydraulic System151
Hydraulic Pump Motor151
Renewing the Hydraulic Pump Motor Brushes151
- Removing the Hydraulic Pump Unit151
- Control Valve152
Removing the Control Valve152
Adjusting the Pressure Relief Valve152
Options159
- Lighting, Wipers and Heater159
Voltage Converter159
Switches160
Fuse Boxes161
Wiring Diagram162
Specials165
Pin Connectors165
AMP-Saab Pin Connectors165

Linde E25 - Page 59

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