The YANMAR ViO45-5, ViO45-5B, ViO55-5, and ViO55-5B excavators represent robust and reliable machinery designed for a variety of construction and earthmoving tasks. These excavators feature powerful diesel engines, with displacements of 1.642 L for the ViO45 models producing 35.2 HP and 2.196 L for the ViO55 models producing 48.4 HP, both utilizing a direct injection fuel system. Their engineering prioritizes efficiency and performance, evident in their hydrostatic drive transmission with two speed settings and a compact, maneuverable design suitable for tight job sites. The ViO45 models operate at approximately 4500-4800 kg, while the ViO55 models weigh 5100-5400 kg, both equipped with rubber tracks for reduced ground pressure.

This Workshop Service Repair Manual in English provides comprehensive guidance for maintaining and repairing your YANMAR excavator. It covers essential areas including detailed maintenance schedules, such as engine oil changes every 250 hours, and fluid capacities for engine oil (7.4 L), hydraulic oil (52 L), and coolant (4.8 L). Technical specifications for the hydraulic system, including pump type and relief pressure, along with undercarriage details like ground pressure, are thoroughly documented. This manual is an indispensable resource for owners, mechanics, and technicians seeking to ensure the optimal performance, longevity, and safety of their ViO45 or ViO55 series excavators.