521 / B5M
Serial: 1 → 99999
109 system groups
▶AIR INLET AND EXHAUST 6
▶BASIC ENGINE 13
▶ELECTRICAL AND STARTING 12
▶ENGINE ARRANGEMENT 1
▶FRAME AND BODY 9
▶FUEL 6
▶HYDRAULIC 17
▶LUBRICATION 2
▶MACHINE ARRANGEMENT 1
▶OPERATOR STATION 15
▶POWER TRAIN 8
▶SERVICE EQUIPMENT AND SUPPLIES 3
▶WORK TOOLS 1