FIREHAWK M7 ULTRA ELITE FACEPIECE
Removing the Spring, Spring Retainer, and Exhalation
Valve
1. Remove and discard the spring retainer.
a. Slide one end of the
retainer out of the
slot.
b. Carefully push the center of the retainer and release
the other end.
Note:
Be careful not to damage the slots, valve, or valve
seat. If the slots, valve, or valve seat are damaged,
replace the component housing.
2. Inspect the slots in the component housing for
damage or distortion. If damage or distortion is
present, replace the component housing.
3. Remove the exhalation valve.
Removing the Speaking Diaphragm
1. Unscrew and remove
the speaking
diaphragm retaining
ring.
2. Carefully remove the
speaking diaphragm.
Disassembling the Component Housing
Removing the Adapter Assembly
1. Remove the inlet adapter.
Note:
Use a large
adjustable wrench to
unscrew the inlet adapter.
You can use a piece 1”
PVC pipe wrapped with a
few winds of electrical tape
to prevent the inlet adapter
from deforming.
Removing the Inlet Gasket and Disc Valve
1. Remove the spider
gasket.
2. Disassemble the spider gasket.
a. Stretch the disc off
of the stem.
REASSEMBLY
Note:
Flow test the facepiece on the PosiChek3 after
reassembly.
Assembling the Component Housing
Install the valve spider (P/N 805011) and disk valve,
speaking diaphragm, drinking tube, and adapter
assembly.
6
TAL 903 (L) Rev. 1 - 10093089 - DRAFT 6-25-09
