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 5-30 Vent Fan Impeller Assembly (Continued) Figure 5.6-14 Detail, Vent Fan Impeller Orientation 3. While holding the Impeller to stop it from rotating, use a 5/16" socket to remove the Vent Fan Motor lock nut from the center of the Impeller. Inspect the lock nut and replace if damaged. Note: Force may be required to remove the Vent Fan Impeller. An even prying around the rim of the base of the Vent Fan Impeller between the Impeller and the Vent Fan Housing may be necessary. Use caution in the application of any such force, otherwise, the Vent Fan Housing may be damaged. 4. Pull Impeller from the motor shaft.