Operation of Water Jacket

TM 9-2320-386-10

2-48. OPERATION OF SWINGFIRE HEATER (Contd)

(10) If overheating switch (2) is not in OPERATION position, allow swingfire

heater (5) to cool. Place overheating switch (2) in OPERATION position. Operate

swingfire heater (5) (task b), close access door (3), and install catch (6). If swingfire

heater (5) will not operate, notify unit maintenance.

WARNING

Box assembly and exhaust pipe will become hot after continued

operation. Be careful when opening access door and when removing

swingfire heater. Failure to do this may result in injury to personnel.

(11) After operation, raise catch (6) and open access door (3). Do not allow skin

to contact box (1) if hot. Open door (4) (refer to paragraph 2-45), loosen wingnut (9)

by turning counterclockwise, and remove swingfire heater (5). Do not allow skin to

contact exhaust pipe (7).

(12) Install swingfire heater (5) in mixing pipe (refer to task c.), water jacket

(refer to task e.), or stow (refer to task f.), as necessary.

e. Operation of Water Jacket.

(1) General. Swingfire heater is installed in water jacket to heat engine

coolant and battery compartment to permit easy starting in arctic conditions.

(2) Open wingnut (9) all the way counterclockwise.

(3) Make sure gasket (8) is flat against body of swingfire heater (5).

NOTE

Water jacket is located on right side of vehicle under fender.

Make sure swingfire heater is installed with pump lever straight up.

Swingfire heater should be in operation when installed. Refer to

task b. of this paragraph.

(4) Remove cap (11) and install swingfire heater (5) in water jacket (10).

Tighten wingnut (9) by turning clockwise.

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