Table 2-1. Preventive Maintenance Checks and Services for Model M992A1
Not Fully Mission
58 Weekly APU Sound-
No soundproof panel is required for
Open APU side door. Make sure
soundproof panels are mounted
59 Weekly APU Engine
If NBC exposure is suspected, all
air filter media should be handled
by personnel wearing protective
equipment. Consult your unit NBC
officer or NBC NCO for appropriate
handling or disposal instructions.
When assembling filter element
unit, make sure edge of cover
marked TOP is positioned at top
edge of canister.
Loosen filter-cap clamp eyebolt.
Remove filter cover. Remove filter
wingnut and slide filter element from
canister. Hold gasket end of filter
element to light source. If light is
not visible through element, service
the element. Remove rubber baffle
from inside of cover. Empty dust from
cover and wipe inside of cover with
a clean damp cloth. Install baffle in
filter cover. Reassemble filter unit.