TM9-2320-361-10 2-59. OPERATION OF SWINGFIRE HEATER (Contd) (5) Allows swingfire heater (1) to run until temperature gage reads 190°F. (6) When temperature gage reads 19°F, loosen wingnut (2) by turning counterclockwise and remove swingfire heater (1). Start engine. Refer to para. 2-15. (7) Install cap (4) on end of water jacket (3). (8) Install swingfire heater (1) in mixing pipe or turboheater, or stow, as necessary (refer to f. of this para.) f. Stowage of Swingfire Heater and Mixing Pipe. (1) General. Swingfire heater and mixing pipe are stowed under companion seat. (2) Shut off swingfire heater (1) (refer to b. of this para.). (3) Position swingfire heater (1) on stowage brackets (7). Place strap (5) over swingtire heater (1) and install hook (6) on stowage bracket (7). (4) Position mixing pipe (11) on stowage brackets (9). Place straps (10) over mixing pipe (11) and install latches (8) on stowage brackets (9). 2-220