Fayat Group BOMAG BC 573 RB-4 Service Manual page 5

Table of contents
5.4.4 Working hydraulics................................................................................................................... 292
5.5 Tests and adjustments............................................................................................................. 296
5.5.1 Pressure tests in the travel circuit............................................................................................ 298
5.5.2 Checking high pressure relief valves and pressure override................................................... 299
5.5.3 Charge pump high pressure test.............................................................................................. 301
5.5.4 Travel pump high pressure test (individual test)...................................................................... 302
5.5.5 Checking the charge pressure................................................................................................. 303
5.6 Inspection and maintenance work.......................................................................................... 305
5.6.1 Maintenance Table................................................................................................................... 305
5.6.2 Checks prior to start up............................................................................................................ 305
5.6.3 Every 500 operating hours....................................................................................................... 307
5.6.4 Every 1000 operating hours..................................................................................................... 308
5.6.5 Every 2000 operating hours..................................................................................................... 311
6 Machine assemblies......................................................................................................................... 315
6.1 Diesel engine............................................................................................................................. 317
6.1.1 Overview of diesel engine........................................................................................................ 317
6.1.2 Lubrication oil circuit................................................................................................................. 321
6.1.3 Cooling circuit........................................................................................................................... 323
6.1.4 Fuel system.............................................................................................................................. 324
6.1.5 Crankcase ventilation............................................................................................................... 327
6.1.6 Charging................................................................................................................................... 329
6.1.7 Exhaust gas recirculation......................................................................................................... 330
6.1.8 Exhaust gas aftertreatment SCR............................................................................................. 332
6.1.9 Engine electrics........................................................................................................................ 347
6.1.10 Inspection and maintenance work.......................................................................................... 358
6.2 Oscillating articulated joint...................................................................................................... 383
6.2.1 Repair overview....................................................................................................................... 384
6.2.2 Repairing the articulated joint................................................................................................... 385
6.2.3 Inspection and maintenance work............................................................................................ 391
6.3 Compactor wheels and dozer blade........................................................................................ 392
6.3.1 Inspection and maintenance work............................................................................................ 392
6.4 Central lubrication system....................................................................................................... 403
6.4.1 Overview of central lubrication system..................................................................................... 403
6.4.2 Technical description................................................................................................................ 404
6.4.3 Control board........................................................................................................................... 406
6.4.4 Lubrication process.................................................................................................................. 413
6.4.5 Progressive distributor............................................................................................................. 414
6.4.6 Lubrication oil pump................................................................................................................. 417
6.4.7 Inspection and maintenance work............................................................................................ 421
6.5 Air conditioning......................................................................................................................... 424
6.5.1 Overview of air conditioning..................................................................................................... 425
6.5.2 Control unit for air conditioning, A72........................................................................................ 427
6.5.3 Physical principles.................................................................................................................... 430
6.5.4 Refrigerant R134a.................................................................................................................... 432
6.5.5 Compressor oil / refrigeration oil.............................................................................................. 434
6.5.6 Working principle of the air conditioning system...................................................................... 436
BC 573 RB-4 5
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