Komatsu GD655-3C(S/N 50001-UP (FOR NORTH AMERICA))

Regularly monitor hydraulic fluid clarity to detect pump wear. Use oil analysis on engine oil (8 gal / 30 L capacity) and transmission fluid (11.9 gal / 45 L capacity) to identify internal component degradation. Monitor the 26.4 gal (100 L) hydraulic reservoir for particulate contamination. Early detection of metal shavings in the tandem case or circle gearbox oil can prevent catastrophic failure of the drivetrain components.

Address steering pressure drops by inspecting the steering control valve and hydraulic pump for leaks. If the transmission slips in higher gears, check clutch pressures and the full power shift mechanism. For electrical display errors or wiring faults, inspect the 24 V system and alternator output. Frequent inspections of hydraulic hoses and fittings are necessary to prevent loss of pressure in the load-sensing circuit.

Plan for transmission rebuilds when clutch engagement becomes inconsistent across the 8 forward gears. The SAA6D114E-3 engine requires top-end inspections if turbocharger efficiency drops or air-to-air aftercooling performance declines. Major chassis work may be required if the articulation joint or front axle oscillation components show excessive play. Rebuilding the variable displacement piston pump is essential when hydraulic flow rates fall below 51 gal/min (194 L/min).

During snow-clearing operations, prioritize radiator cleaning to prevent overheating. In dusty environments, frequent air cleaner inspections are mandatory to protect the turbocharged engine. Before winter use, ensure the cooling system (10.4 gal / 39.5 L capacity) is properly treated and check all low-pressure tubeless 17.5R25 tires for proper inflation. Inspect all grease points on the moldboard and circle drive to prevent ice buildup from seizing moving parts.