MAINTENANCE EVERY 50 OPERATING HOURS DRAINING OFF WATER AND DIRT DEPOSITS FROM THE FUEL TANK 1. Place a container under the drain plug of the fuel tank (see arrow). 2. Open the drain plug, drain off water and dirt. 3. Close the drain plug when clean fuel starts to leak out. 75_236 CHECKING THE SERVICE BRAKE AND OIL LEVEL, REFILLING OIL Danger of accidents! If the oil level is too low, the service brake may break down! If the brake fluid supply control lamp (1) lights up, you must immediately stop and check the oil level. 1 Danger of accidents! If you use usually available brake fluid for filling up, the operational efficiency of the brake system may be impaired!
Use only the prescribed oil for filling up! Do not use brake fluid! Pay attention to utmost cleanness! 75_237 1. For maintenance operations, park and secure machine as described in chapter "Preparing the Machine for Mainte- nance". 2. Check the brake fluid level at the expansion tank. The oil lev- el must be 0.394 in (10 mm) to 0.787 in (20 mm) below the upper edge of the expansion tank (marking). 3. If the oil level is too low, fill prescribed oil into the expansion tank. For detailed specifications, see section "Lubricants and Op- erating Agents". 4. If you detect a significant oil loss, inform your local Komatsu dealer. 75_238 7-41