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 5-21 Vent Fan Assembly Design Iteration 3 (Continued) 5.6.1.2.2 Installation Note: The larger end of the Combustion Air duct is permanently secured to the Vent Fan Assembly housing with Loctite 770 primer and Loctite 401. These materials are used to seal the Combustion Air Duct to the Vent Fan Assembly. 1. Clean any loose, residual sealant on the inside surface of the combustion air duct. 2. Clean the outside surface and front edge of the Combustion Air Inlet by removing any old sealant, and then coat with Silicone RTV to provide a seal for the Combustion Air Duct. Figure 5.6-8 Combustion Air Duct and Inlet Sealant Application Note: The ends of the Combustion Air Duct must be sealed to the Vent Fan Assembly and to the Top Housing. 3. Engage the Vent Fan Assembly onto the Burner Housing Assembly ensuring that the motor frame sits correctly over the Burner Housing, and that the Combustion Air Duct is aligned with the Top Housing air inlet. DO NOT use excessive force. Clean loose, residual sealant from inside of combustion air duct Clean all residual sealant from surface of combustion air inlet