2. CHEMICAL-BIOLOGICAL
MASK: FIELD M40
IAW TM

3. CHEMICAL-BIOLOGICAL MASK: FIELD M40 CHARACTERISTICS CAPABILITIES
FEATURES
PMCS
BATTLE DRESS OVERGARMENTS

4. CHARACTERISTICS

5. LIGHTWEIGHT
TRANSPORTED AND STORED IN CARRIER
FACEPIECE IS MADE OF SILICONE RUBBER WITH INTURNED
SEALING SURFACE SO IT CAN FORM A SEAL ON YOUR
FACE
SECOND SKIN FOR ADDITIONAL PROTECTION FROM
LIQUID AGENTS (M40A1 ONLY)
QUICK DOFF HOOD FOR EASY DONNING OPERATION
(M40A1 ONLY)
INCLUDES BOTH CLEAR AND NEUTRAL GRAY OUTSERTS
CANISTER QUICKLY AND EASILY REPLACED

6. CAPABILITIES

7. WHEN WORN WITH PROPER CANISTER
INSTALLED, THE FACEPIECE PROTECTS FACE,
EYES AND LUNGS FROM CONCENTRATIONS
OF CHEMICAL-BIOLOGICAL (CB) AGENTS,
TOXINS AND RADIOACTIVE FALLOUT
PARTICLES. THE CANISTER MAY BE
INSTALLED ON EITHER SIDE OF THE
FACEPIECE

8. FEATURES

9. FACE PIECE: Provides a seal
Against CB agents
HEADHARNESS: Consists of
Head pad, forehead straps , temple
Straps, cheek straps, and donning
tab
INLET VALVE DISK:
allows filtered air to enter
the face piece and prevents
moist exhaled air from enter-
ing canister

10. OUTLET VALVE DISK/COVER:
releases exhaled air and pre-
vents unfiltered air from enter-
ing face piece
NOSECUP VALVE DISK:
allows filtered air to enter
Nose cup and prevent moist
exhaled air from fogging
Eye lenses in cold weather
AIRFLOW DEFLECTOR:
Directs inhaled air over eye-
Lenses to prevent fogging

11. CANNISTER:
Filters out CB agent
And other particles
From contaminated air
FRONT/SIDE VOICEMITTER:
Transmit your voice outside the face-
piece
CARRIER: Provides for
storage and carrying of
mask.Shoulder strap, waist
strap, short strap, adjust-
able strap
INTERNAL/EXTERNAL DRINK TUBE:
Allows operator to drink while wearing the
facepiece

12. HOOD: Rubber coated
fabric which protects neck
and areas of head not covered
by your mask against CB
agents
OUTSERTS: Fit over
face piece eyelense rings
to secure outserts to face piece
Neutral gray: reduces sun glare
WATERPROOF BAG: Keeps mask dry
when required by climate and mission

13. PMCS
WHY IS IT IMPORTANT?

14. Item Interval ITEM TO BE INSPECTED NMC B A W Canister. 1
Canister is
Cracked or
Dented over
¼ deep or
Damaged on
A seam, or
Has holes. X X
Remove filter canister. Check
Canister for cracks, dents or holes.
Check air intake to make sure it is
Not clogged with dirt. X X
Threads are
Damaged
Loose particles
Rattle or dust
Falls out x
Check for damaged threads
on canister x
Shake canister and listen for loose
particles x x

15. Item Interval ITEM TO BE INSPECTED NMC B A W
Eye lenses, Eye rings, Outserts 2 .
Eye lenses are
Cracked or cut
Eye rings are
Bent or corroded
Outserts are
Broken or
Distorted enough
To affect vision
Check eye lenses for cracks, cuts
Scratches, or discoloration X X
Check eye rings for corrosion x x
Check both set of outserts for chips
Cracks or discoloration that affect
vision x x

16. Item Interval ITEM TO BE INSPECTED NMC B A W Hood. 3
Hood has more
than two pin
holes, cuts,
holes or tears
Fabric is sticky
or gummy
Fabric is peel-
ing or worn
Straps or cord
missing, zipper
is torn or
broken .
Caution: When examining hood, avoid
Open flame and exposed light bulbs X X
Check for cuts, holes or tears x x
Sticky or gummy area, Peeled
or worn coating x x
Check straps, zipper

17. Item Interval ITEM TO BE INSPECTED NMC B A W Face piece. 4
Face piece is
dirty
Silicone rubber
has holes,
tears, which
will allow air
to enter
Eye lenses or
housing pulls
away from
face piece
Visually inspect inside surface for
dirt,Mud, and greasy oily substance X X
Check for holes, tears by holding
In front of light x x
Check silicone rubber next to
Eye lenses to ensure they will not
Pull away from face piece x x

18. Item Interval ITEM TO BE INSPECTED NMC B A W Head harness. 5
Will not hold
Face piece
Against face
Harness is cut
Torn or frayed
Check for elasticity, Check straps
For cut, tears or deterioration x x

19. Item Interval ITEM TO BE INSPECTED NMC B A W Buckles. 6
Buckles are
Bent, cracked
Or will not hold
Straps
Missing or
broken X X
Check for bends, cracks or
Corrosion
Check for missing or broken
buckles x x

20. Item Interval ITEM TO BE INSPECTED NMC B A W Outlet valve disk. 7
Disk is missing
Disk is nicked
Torn, ripped,
Or will not
Seat properly
Check to see if outlet valve disks
are present x x x x
Check for nicks, tears or rips.
Wipe off moisture

21. Item Interval ITEM TO BE INSPECTED NMC B A W
Internal/External Drink Tube. 8 .
Either tube is
Missing or
Cracked
Internal tube
Misaligned
External tube
Connection
loose x x
Check that both tubes are present.
Check internal tube for alignment
Check external tube for solid
connections x x x x

22. Item Interval ITEM TO BE INSPECTED NMC B A W Airflow Defector. 9
Deflector not
Mounted
Correctly
Mounting holes
Are cut or
torn X X
Check that deflector is securely
Mounted and that flanges are in
The holes
Check mounting holes for cuts or
tears x x

23. Item Interval ITEM TO BE INSPECTED NMC B A W Inlet Valve. 10
Disk missing
Valve disk is
Torn or cut x x
Check that valve disk is present and
Properly mounted
Check for cuts, holes or tears x x

24. Item Interval ITEM TO BE INSPECTED NMC B A W Nose cup Assembly. 11
Nose cup disk
Are missing
Nose cup
Pulled away
From front
Voicemitter
housing X X
Check for disk.
Check that nose cup is not pulled
Away from back of front voice-
mitter x x

25. Item Interval ITEM TO BE INSPECTED NMC B A W Voicemitters. 12
Retaining rings
Corroded or
Cracked
Voicemitter
Dented or
Installed back-
wards x x
Check retaining rings for corrosion,
or cracks
Check for dents or punctures. Make
sure the four beads in the center of
the voicemitter is facing outward x x

26. Item Interval ITEM TO BE INSPECTED NMC B A W Carrier. 13
Carrier is
Dirty. Straps
Are torn or
Hardware is
Missing
Mildew is
present x x
Check for torn straps or missing
hardware. Check for cleanliness,
and mildew

27. Item Interval ITEM TO BE INSPECTED NMC B A W Waterproof Bag. 14
Bag is
Torn or has
holes
Check bag for tears, holes and
cracks X X

28. Item Interval ITEM TO BE INSPECTED NMC B A W Second Skin. 17
Is dirty
Has tears or
Splits larger
Than ¼ length
Or diameter X X
Check second for cuts, holes or
Tears
Check for dirt or greasy or oily
substances x x

29. The BDO is a camouflage colored, woodland or desert two piece garment
PROTECTIVE GEAR
The BDO is a camouflage colored, woodland or desert two piece garment
consisting of one coat and one pair of trousers. The BDO provides protection
against chemical agent vapors, liquid droplets, biological agents, toxins, and
radioactive alpha and beta particles. When remove from its vapor barrier bag it
lasts for a minimum of 30 days. The wear time may be extended by the
Commander. The key to its effectiveness is its serviceability. Upon exposure,
it provides 24 hours of protection.

30. WITHOUT PROTECTIVE GEAR.
WITH PROTECTIVE
GEAR
WITHOUT PROTECTIVE GEAR

31. SUMMARY CHARACTERISTICS CAPABILITIES FEATURES PMCS
BATTLE DRESS OVERGARMENTS

32. QUESTIONS