TM 9-2320-386-10 2-105 2-45. OPERATION OF CARGO BODY ARCTIC KIT a. General. The cargo body arctic kit is installed to permit cargo and troop transport in temperatures -25°F (-32°C) or below. The kit includes a body heater, insulated body enclosure, lighting system, and a speaking tube. b. Operation of Body Heater. (1) General. The body heater provides heat to warm the cargo body. On M35A3 cargo vehicles, body heater may be either a swingfire heater or a multifuel heater. M35A3C cargo vehicles with dropsides may only use multifuel heater. NOTE Step 2 applies to vehicles equipped with multifuel heater only. (2) Open fuel tank shutoff valve (1) by turning counterclockwise. NOTE • Step 3 applies to vehicles equipped with swingfire heater only. • Swingfire heater should be in operation before performing step 3. Refer to para. 2-48. (3) Remove lockpin (2) and open door (3). Install swingfire heater and adjust fuel regulator knob as necessary (para. 2-48). Close door (3) and install lockpin (2). ~ 2 3 1