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To replace the CHQD, grasp the external drinking tube where it joins the CHQD with one hand and with the other grasp the CHQD.
New facepieces have the new CHQD already installed.
They will teach CBRN specialists how to replace the glued-on CHQD without damaging the facepiece, plus check your unit's masks for problems.
While you wait for the MWO to be done or for a new facepiece to arrive, it's OK to continue to use a mask with the old CHQD as long as it passes the drinking system function test in Para 2-9 in TM 3-4240-346-20&P.
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- Chra antigens
- CHRD PCT