TM 55-4920-442-13 & P
3-77. Filter assemblies - Inspect
This task covers:
Figure 1-2 for location of filters.
1. Check to see if a warning light on the control panel is on indicating excessive differential pressure at any of the three
test stand filters (high pressure, low pressure and fill system).
2. High differential pressure usually indicates a dirty filter element in need of replacement. See para. 3-78, Servicing
END OF TASK