TM 55-4920-442-13 & P
3-78. Filter assemblies - Service
This task covers:
Test stand must be shut down and all pressure relieved before servicing filters.
Use volatile solvents only in a well ventilated area. Avoid prolonged contact
with the skin.
It is not necessary to remove filters from test stand to change filter elements.
SERVICE - HIGH PESSURE FILTER
1. Change filter element(s). See para. 3-80 for disassembly of filter.
2. Clean head assembly and bowl with cleaning solvent PD-680, Type II and medium bristle brush.
3. If after replacing the filter element(s) the differential pressure warning light still activates, the differential pressure
switch may be defective. See para. 3-79 to test this switch.
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