5 Maintenance Filling Up Coolant 1. Empty and clean the expansion tank. 2. Prepare the coolant as prescribed. 3. Fill up the coolant slowly into the cooling system up to the overflow shoot of the radiator. 4. To bleed the cooling system while the radiator cap is removed, let the engine run idle for three minutes with its lower speed (rpm) and then for another five minutes with its top speed. Fill up with coolant if the coolant level in the radia tor is dropping. 5. Switch off the engine, wait approx. three minutes and then refill coolant up to overflow shoot of the radiator. Re-lock the radiator. 6.
Fill up coolant into the expansion tank, until the coolant level is between the MAX and MIN markings. Checking and adjusting the valve clearance Have the valve clearance checked and adjusted at an authorised Komatsu garage. 5-68 WA90-5 – VEAM270100