Komatsu WA20-2(S/N 10001-UP)

Utilize Komatsu KOWA fluid analysis at every 500-hour interval to monitor engine wear metals, hydraulic particle counts, and coolant SCA concentration. Check the air filter restriction indicator daily; replace the outer element at 1,000 hours or when indicated. Monitor hydraulic oil temperature, as overheating can thin the fluid and reduce drive system power. Use Komatsu EO or equivalent CD/CE rated engine oil and Komatsu GO gear oil for axles to ensure proper viscosity across ambient temperatures.

Address hydraulic leaks at hose connections and cylinder seals promptly to prevent pump damage. Inspect the TORQFLOW transmission for slippage or unusual noise, indicating filter or clutch wear. Check the fuel water separator daily; clogged filters cause hard starting and power loss. Replace worn steering pins and bushings to maintain articulation control. Inspect wet disc brakes for pad wear and hydraulic fluid contamination, which reduces stopping power.

Plan for major component overhaul between 10,000 and 15,000 hours depending on duty cycle. Inspect the engine valve clearance every 250 hours; improper clearance leads to power loss and increased fuel consumption. Check final drive oil for metal particles at 1,000 hours; contaminated oil indicates gear or bearing failure. Replace the hydraulic return filter and tank filter at 250 hours to protect the main pump. Evaluate the torque converter and transmission clutches for wear during the 2,000-hour service.

In cold weather, use SAE 10W or 15W40 engine oil and ensure anti-freeze concentration is adequate to prevent coolant freezing. Check tire inflation pressure regularly; standard pressure is 0.18 MPa (1.8 kgf/cm²) for WA20/40/50 models. In dusty environments, clean the radiator and oil cooler fins daily to prevent overheating. Inspect the air filter more frequently in high-dust conditions. Drain the fuel water separator daily to prevent water contamination in the injection system.