Fayat Group BOMAG BC 573 RB-4 Service Manual page 4

Table of contents
4 Electric systems.................................................................................................................................. 99
4.1 Basic principles......................................................................................................................... 100
4.1.1 Measuring method................................................................................................................... 100
4.1.2 Understanding circuit diagrams................................................................................................ 105
4.1.3 Telemecanique switch.............................................................................................................. 116
4.1.4 Deutsch plug, series DT and DTM........................................................................................... 118
4.1.5 Magnetic coil plug.................................................................................................................... 122
4.1.6 Clip-on technology................................................................................................................... 124
4.2 Overview of electric system..................................................................................................... 128
4.2.1 Operator's stand...................................................................................................................... 130
4.2.2 Wiring....................................................................................................................................... 132
4.2.3 CAN BUS overview.................................................................................................................. 139
4.2.4 Table of fuels and lubricants..................................................................................................... 141
4.3 Starting the engine with jump leads........................................................................................ 150
4.4 Installation locations of control units..................................................................................... 151
4.5 Fuse assignment....................................................................................................................... 156
4.5.1 Notes on safety........................................................................................................................ 156
4.5.2 Central electrics....................................................................................................................... 156
4.5.3 Main fuses................................................................................................................................ 157
4.5.4 Control console cabin............................................................................................................... 158
4.6 Description of electrical components..................................................................................... 159
4.6.1 Control console cabin .............................................................................................................. 165
4.6.2 Control unit for air conditioning, A72........................................................................................ 167
4.7 Training of electric system....................................................................................................... 170
4.8 Inspection and maintenance work.......................................................................................... 228
4.8.1 Maintenance Table................................................................................................................... 228
4.8.2 Every 500 operating hours....................................................................................................... 228
4.8.3 As required............................................................................................................................... 229
5 Hydraulic system.............................................................................................................................. 231
5.1 Basic principles......................................................................................................................... 233
5.1.1 Open and closed hydraulic circuit............................................................................................ 233
5.1.2 Swash plate principle, pump.................................................................................................... 235
5.1.3 Swash plate principle, motor.................................................................................................... 236
5.1.4 External gear pumps................................................................................................................ 238
5.2 Overview of hydraulics............................................................................................................. 240
5.3 Description of hydraulic components..................................................................................... 245
5.3.1 Travel pump, A4VG71 DA........................................................................................................ 245
5.3.2 Travel pump, A4VG71 DG....................................................................................................... 252
5.3.3 Fan pump, A4VG56 EF-EP...................................................................................................... 258
5.3.4 Steering and working pump, A10VO/VSO............................................................................... 263
5.3.5 Travel motor, A6VM HA2T....................................................................................................... 268
5.3.6 Fan motor................................................................................................................................. 272
5.4 Description of hydraulic circuits............................................................................................. 274
5.4.1 Charge circuit, engine hood, brake and travel speed range selection..................................... 275
5.4.2 Travel system........................................................................................................................... 282
5.4.3 Cooling system......................................................................................................................... 286
4 BC 573 RB-4
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