TM 3-4240-334-20&P
TM 3-4240-334-20&P
TM 3-4240-334-20&P
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<strong>TM</strong> 3-<strong>4240</strong>-<strong>334</strong>-20&P<br />
Table 2-1. PREVENTIVE MAINTENANCE CHECKS AND SERVICES FOR M43A1<br />
Item<br />
No.<br />
Interval<br />
Item to<br />
Check/Service<br />
Procedure<br />
Not Fully Mission<br />
Capable If:<br />
1<br />
Semi-<br />
Annual<br />
FACEPIECE<br />
ASSEMBLY<br />
NOTE<br />
Canister disconnect must<br />
be separated from blower<br />
assembly before performing<br />
PMCS. Refer to operating<br />
procedures, Operators<br />
Manual, <strong>TM</strong> 3-<strong>4240</strong>-<strong>334</strong>-10.<br />
a.<br />
b.<br />
c.<br />
Visually inspect inside and<br />
outside surfaces for dirt,<br />
mud, and greasy or oily substances.<br />
Check faceblank (1) for holes,<br />
tears, splits, nicks, or dry rot.<br />
Check rubber next to lenses<br />
(2), inlet valve assembly (3),<br />
outlet valve assembly (4),<br />
microphone outside backing<br />
plate (5), hood cooling duct<br />
(6), and drink tube passthrough<br />
assembly (7) to be<br />
sure these components will<br />
not pull away from faceblank<br />
(1).<br />
Dirt or grease is on sealing<br />
surfaces. Dirt, mud, or greasy<br />
substances interfere with<br />
normal operation.<br />
Faceblank has holes, tears, splits,<br />
nicks, or dry rot which will allow<br />
air to enter facepiece assembly.<br />
Lenses, inlet valve assembly,<br />
outlet valve assembly, microphone<br />
outside backing plate,<br />
hood cooling duct, or drink<br />
tube pass-through assembly<br />
pull away from faceblank.<br />
2-16
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