Fayat Group BOMAG BC 473 RB-4, Service Manual

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3.4.1 Diesel engine........................................................................................................................... 107
3.4.2 Air conditioning......................................................................................................................... 109
3.4.3 Central lubrication system........................................................................................................ 110
3.4.4 Overview of maintenance flaps and doors............................................................................... 113
4 Electric systems ................................................................................................................................ 115
4.1 Basic principles
.........................................................................................................................
116
4.1.1 Measuring method.................................................................................................................... 116
4.1.2 Understanding circuit diagrams................................................................................................ 121
4.1.3 Telemecanique switch.............................................................................................................. 132
4.1.4 Deutsch plug, series DT and DTM........................................................................................... 134
4.1.5 Magnetic coil plug.................................................................................................................... 138
4.1.6 Clip-on technology................................................................................................................... 140
4.2 Overview of electric system
.....................................................................................................
144
4.2.1 Operator’s stand...................................................................................................................... 146
4.2.2 Wiring....................................................................................................................................... 148
4.2.3 CAN BUS overview.................................................................................................................. 155
4.2.4 Table of fuels and lubricants..................................................................................................... 157
4.3 Starting the engine with jump leads
........................................................................................
166
4.4 Installation locations of control units
.....................................................................................
167
4.5 Fuse assignment
.......................................................................................................................
172
4.5.1 Notes on safety........................................................................................................................ 172
4.5.2 Central electrics....................................................................................................................... 172
4.5.3 Main fuses................................................................................................................................ 173
4.5.4 Control console cabin............................................................................................................... 174
4.6 Description of electrical components
.....................................................................................
175
4.6.1 Control console cabin .............................................................................................................. 181
4.6.2 Control unit for air conditioning, A72........................................................................................ 183
4.7 Training of electric system
.......................................................................................................
186
4.8 Inspection and maintenance work
..........................................................................................
244
4.8.1 Maintenance Table................................................................................................................... 244
4.8.2 Every 500 operating hours....................................................................................................... 244
4.8.3 As required............................................................................................................................... 245
5 Hydraulic system .............................................................................................................................. 247
5.1 Basic principles
.........................................................................................................................
249
5.1.1 Open and closed hydraulic circuit............................................................................................ 249
5.1.2 Swash plate principle, pump.................................................................................................... 251
5.1.3 Swash plate principle, motor.................................................................................................... 252
5.1.4 External gear pumps................................................................................................................ 254
5.2 Overview of hydraulics
.............................................................................................................
256
5.3 Description of hydraulic components
.....................................................................................
260
5.3.1 Travel pump, A4VG110 DA...................................................................................................... 260
5.3.2 Fan pump, A4VG56 EF-EP...................................................................................................... 267
5.3.3 Steering and working pump, A10VO/VSO............................................................................... 273
5.3.4 Travel motor, A6VM HA2T....................................................................................................... 278
5.3.5 Fan motor................................................................................................................................. 282
5.4 Description of hydraulic circuits
.............................................................................................
284
Table of contents
BC 473 RB-4 / BC 473 RS-4 / BC 473 EB-4 4
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