Komatsu — 4.7.12.a CHANGING THE HYDRAULIC SYSTEM OIL AND CLEANING THE SUCTION FILTER

MAINTENANCE PLAN RWA28680 202 8 - Raise the front mat and remove the cover (11). Use a 13 mm spanner. 9 - Loosen the bleeder plug (12) positioned on the hydraulic pump, until no air bubbles can be observed in the oil that flows out (use a 3 mm setscrew spanner). Tighten the bleeder plug (12) and put back the cover (11). 10 - Put back the filling cap (3), start the engine and operate the machine making each piston move several times in order to bleed the system. Stop the machine in maintenance position, check the oil level again and if necessary top up. Always use oil of the prescribed type, (see “4.3 FUEL, COOLANT AND LUBRICANTS”).

11 - Put back the upper platform (1) with the relevant fastening screws (2).         IMPORTANT • Do not start the engine with empty tank, since this would certainly damage the pump.