The unit commander or senior officer in charge of maintenance personnel assigned to remove and
dispose of the contaminated gas and particulate filters must prescribe the necessary protective clothing
(TM 10-277) to be worn during this operation. He must also prescribe the necessary safety measures to
be followed including the decontamination operation (TM 3-220) that must be performed before the new
filters are installed.
Set POWER switch (1) on the compartment control
M56 Gas-Particulate Filter
module to OFF.
Loosen screw (2).
Pull catch (3) outward and swing retaining bar (4) away
from inner cover (5).
Using handles, pull inner cover (5) from access
Pull particulate filter (7) from filter housing (8).
Place particulate filter (7) in filter housing (8), either
Grasp inner cover by the handles and place it in the
access cover (6).
Swing retaining bar (4) up across inner cover and
engage end of bar with catch (3).
Tighten screw (2) until sleeve (9) is flush with top surface
(A) of retaining bar (4).