TM 9-2350-238-10WINTERIZATION KIT–CONTINUEDCOOLANT HEATER OPERATION– CONTINUED5 When light (4) comes on, immediatelymove switch (6) to RUN position withouthesitating in OFF position.6 Set HI-LO switch (7) for desired rate ofheating,NOTEIf set for Hl, heater willautomatically go into low heatwhen coolant temperaturereaches 220°F (105°C). LOposition is suitable for standbyoperation when heater will beused for an extended period oftime.7 Shut heater off when engine is operating.To shut heater off, turn switch (6) to offposition. Flame will extinguish in a fewmoments as soon as fuel is purged.Blower will operate for about 1 minute un-til heater has cooled, then will stop. Lightwill stay on until blower stops.CAB HEATER OPERATION123456Remove heater fuel filler cap (1) and adddiesel fuel to fill as required. Initial heatercapacity is 5 gal. (19 l). Replace filler cap.Open the fuel shutoff cock (2).Close air deflector (3) at base of heater todeflect air to slip ring and hydraulic pumps.Set vehicle master switch to ON.Check that light (4) on heater control boxgoes on when pressed.Hold START-RUN switch (5) in STARTposition until light (4) comes on; thenmove switch (5) to RUN position withoutstopping in OFF position.5-6
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