TM 55-2840-231-23
2-18. Diffuser Vent Orifice Selection - Continued
Clean area around orifice.
Perform settings 7 through
10 of the test run schedule
in table 1-10.
After the test run, inspect
the area around the orifice.
If there is any evidence of
smoking or spewing from
the vent, reduce the orifice
size by installing the next
lower dash number orifice.
(See figure.) Secure the
orifice with lockwire (item
17, Appendix D),
Repeat the run, inspection,
and orifice replacement
until no evidence of spew-
ing or smoking is present.
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