TM 10-3930-659-20 5-38. ENGINE COOLING SYSTEM DRAINING, FLUSHING, AND FILLING (Con’t) b. FLUSHING NOTE Engine cooling system should be flushed If antifreeze drained from forklift truck contains excessive contaminants. Refer to TM 750-254 for instructions on flushing engine cooling system. c. FILLING 1. Fill radiator (3) with antifreeze. 2. Install radiator fill cap (2) on radiator (3) and close cover (1). 3. Remove cap (6) from coolant recovery tank (7) and fill with antifreeze until fluid level is between COLD and HOT markings on coolant recovery tank. 4. Install cap (6) on coolant recovery tank (7). 5. Start engine (see TM 10-3930-659-10) and allow engine to reach operating temperature. 6. Stop engine (see TM 10-3930-659-10) and allow engine to cool. TA706923 5-111