TM 10-4320-344-242.20.3 RadiatorService,Model609-A. (Continued)Do not work on equipment that is not securely stabilized to prevent rollingor sliding. Ensure both wheels of equipment have chocks that are secure.Allow engine to cool before removing radiator cap to avoid being scalded byhot antifreeze. Open radiator cap slowly to release pressure.Drain antifreeze and allow radiator to cool. Hot radiator or antifreeze cancause serious burns.Failure to obey these warnings may result in serious personal injury.a.b .c .d.e .Remove radiator cap (Figure 2-107, 1).Visually check, through radiator filler neck (2) for accumulation of rust orscale inside radiator (3). If required, refer to paragraph 2.20.3.2 and flushr a d i a t o r ( 3 ) .Add new antifreeze until fluid level is visible in radiator filler neck (2).Antifreeze level will drop when thermostat opens.Refer to TM 10-4320-344-10 and start engine. When thermostat opens, addantifreeze until fluid level is visible in radiator filler neck (2).Refer to TM 10-4320-344-10 and stop engine. Install radiator cap (1) onr a d i a t o r ( 3 ).2.20.3.2 FlushingRadiator.Do not work on equipment that is not securely stabilized to prevent rollingor sliding. Ensure both wheels of equipment have chocks that are secure.Allow engine to cool before removing radiator cap to avoid being scalded byhot antifreeze. Open radiator cap slowly to release pressure.Drain antifreeze and allow radiator to cool. Hot radiator or antifreeze cancause serious burns.Failure to obey these warnings may result in serious personal injury.a .Add cleaning compound to radiator (3), fill radiator (3) with clean water, andinstall radiator cap (1) on radiator (3).Normal operating temperature is between 175°F (79°C) and 210°F (99°C).b .Refer to TM 10-4320-344-10 and start engine. When normal operatingtemperature is reached, refer to TM 10-4320-344-10 and stop engine.2-252NOTENOTE
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