TM 9-2320-361-10 2-50. BOW RETAINER AND CAB SOFT-TOP KIT To install bow retainer and cab soft-top kit, refer to para. 2-21. 2-51. 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 less. The kit includes a body heater, insulated body enclosure, lighting system, and a speaking tube. b. Operation of Body Heater. (1) General. Body heater provides heat to warm cargo body. On M35A2 cargo trucks, body heater may be either a swingfire (gasoline) heater or a multifuel heater. M35A2C cargo trucks with dropsides may use only multifuel heater. NOTE Step (2) applies to vehicles equipped with multifuel heater only. (2) Open fuel tank shutoff cock (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. 2-59. Remove lockpin (2) and open door (3). Install swingfire heater and adjust (3) fuel regulator knob as necessary. Refer to para. 2-59. Close door (3) and install lockpin (2). (4) Open diverter by turning diverter control lever (4) clockwise. NOTE Steps (5) through (12) apply to vehicles equipped with multifuel heater only. (5) Depress red indicator light (6) to check operation of circuit. If red indicator light (6) does not illuminate, notify your supervisor. (6) Set HI-LO switch (5) on control box to HI or LO position, depending upon heating needs. 2-206