Komatsu — Komatsu PC450LC-6 Hydraulic Excavator Operation & Maintenance Manual (EN)

24. SERVICE PROCEDURE 24.1.23 CHECK WINDOW WASHER FLUID LEVEL, ADD FLUID If air is ejected with the window washer fluid, check the fluid level in window washer tank a . If showing under the level, fill with automobile window washer fluid. When adding fluid, be careful not to let dirt or dust get in. Mixture ratio of pure washer fluid and water Since the ratio should be varied depending on atmospheric temperature, replenish washer fluid at the following mixture ratio, taking temperature into account. Pure washer fluid comes in two types: for -10°C(14°F) (for general use) and for -30°C (-22°F) (cold regions). Use pure washer fluid according to operation area and season.

PC450-ENG 3-42 Operation area and season Mixture ratio Freezing temperature Normal Pure washer fluid 1/3: water 2/3 - 10° C(14°F) Winter in cold region Pure washer fluid 1/2: water 1/2 - 20°C (- 4°F) Winter in extremely cold region Pure washer fluid - 30°C (- 22°F)