Maxair CAPR User Instructions page 58

Disassembly
1. With one hand, hold the Helmet and FCC
with the thumb against the FCC and the
fingers on the inside of the Helmet. With
the other hand, pull up on the FCC T-Tab
and unlatch it from the Helmet FCC Rear
Bottom Snap.
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2. Continue pulling up on the T-Tab with one hand. Using a sliding motion with
the thumb moving up and pushing the FCC up and off the Helmet, pull the
Helmet down with the fingers (opposite the thumb and FCC) until the FCC
is up and off the helmet.