TM-9-2815-202-34 Technical Manual for 8V71T Engines for M109 Howitzer Download
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TM 9-2815-202-34 6-11. AIR BOX HEATER AIR BOX HEATER REPLACEMENT a. b. c. d. Removal (1) Disconnect wire (39) from terminal nut (Cont) pin (40). NOTE Disconnect tube (17) from solenoid during pump and motor assembly removal. (2) Disconnect tube (17) from adapter (41) on air box heater assembly (42). Remove tube. (3) Remove two bolts (43) and two Iockwashers (44) securing air box heater assembly (42) and gasket (45) to block. Remove heater assembly and gasket. Discard Iockwashers and gasket. Disassembly (1) Remove adapter (41), gasket (46), and filter element (47) from heater body (48). Discard ring spacer. (2) Unscrew insulator nut (49) from heater body (48). (3) Remove electrode (50) and two gaskets (51 ). Discard ring spacers. (4) Unscrew terminal nut pin (40) from electrode (50). (5) Remove spray nozzle (52) and flat washer (53) from heater body (48). Cleaning/Inspection (1) Inspect electrode and filter element for cracks, corrosion, or damage. (2) Inspect spray nozzle and insure orifice is not plugged. If necessary, clean orifice. (3) Inspect ignition wire for cuts, tears, burns, or other damage. (4) Inspect tube bends or other damage. Assembly (1) (2) (3) Install spray nozzle (52) and flat washer (53) into heater body (48). Screw terminal nut pin (40) onto electrode (50). Install electrode (50) and two gaskets (51) into heater body (48). 6-20