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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 5-46 Burner Assembly (Continued) 9. If using the silicone rubber duct, open the nylon clamp and place it over the Primary Air Duct where it meets the Top Housing. Check that the ears on the clamp are rotated so 10. that they will not interfere with the Top Shell, then squeeze the clamp tabs tightly so that the teeth are engaged and it grips the Primary Air Duct. Note: The Primary Air Duct provides the passage for air to the Burner. NO air leakage is permitted. Note: If new steel primary duct is to be used, it is only necessary to apply O-ring lubricant to the contact surfaces and ensure proper alignment. 11. Install Vent Fan Assembly (ref. 5.6.1). 12. Install Bottom Shell (ref. 5.4.3). 13. Install Top Shell (ref. 5.4.2). 5.7.2 Flame Tube (Applies to all Design Iterations) Figure 5.7-3 Flame Tube 5.7.2.1 Removal 1. Remove Top Shell (ref. 5.4.2).