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TM-9-2540-207-14&P Sustainment Manual for A20 Heater for M113 2540-01-396-2826 Download

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TM 9-2540-207-14&P 5-45 Burner Assembly (Continued) 9. Pull Combustor Assembly away from Heat Exchanger. Note: The Burner Housing is sealed to the Heat Exchanger with an O-Ring. Removal of the Combustor Assembly may require some twisting movement to release the seal. Remove Burner O-Ring from the Burner Housing and discard. 5.7.1.2 Installation 1. Coat a new Burner O-Ring with GAA grease and install the O-Ring onto the Burner Housing. 2. Clean the mating surfaces of the Heat Exchanger to the Burner Housing using a cloth. 3. Check that the Primary Air Duct is not damaged, torn, or nicked. Replace if necessary. Note: If the primary air duct is silicone rubber, it may be replaced with the new metal duct. Apply O-ring lubricant to the contact surfaces. 4. Line up the Burner Housing with the Heat Exchanger and push into place. Tip: To line up the Burner Housing use the Primary Air Duct as a guide to determine the screw hole locations. 5. Using a 5/16" socket or nut driver, secure the Burner Housing to the Heat Exchanger by installing three (3) hex-head bolts with flat washers and lock washers. Ensure that the two ground wires and Vent Sensor connector clip are included. Tighten until the Burner mounting lugs are resting on the flanges of the Heat Exchanger. Note: The three (3) bolts should be tightened so that the Burner Housing is pulled into the Heat Exchanger in an even manner. 6. Ensure that the braided sleeving is in place on a new fuel line. Place the hose clamp over the Fuel Line and secure the Fuel Line onto the Burner Housing. Note: Fuel Line removal may loosen the brass fuel line fittings. Check that all fittings are secured into their housings, and Loctite (PSP 620) if necessary. 7. Check that the Burner Sensor fitting is clean. Insert the Burner Sensor and secure using a 7/16" open ended wrench. DO NOT force the Burner Sensor through the hole. 8. Ensure that the Primary Air Duct is not kinked. Align as necessary.