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 5-5 5.2.3 Design Iteration 3 Design Iteration 3 can be identified by a number of electronic upgrades. All of the printed circuit boards and the wiring harness have been upgraded in this design iteration. Refer to Figure 5.2-4 Design Iteration #3 to indentify the features of Design Iteration 3. Figure 5.2-4 Design Iteration #3