11-167. NBC GAS FILTER AND BRACKET REPLACEMENT
This task covers:
M996, M996A1, M997, M997A1, M997A2
General mechanics tool kit:
automotive (Appendix B, Item 1)
Four lockwashers (Appendix G, Item 110)
Four rivets (Appendix G, Item 185)
NBC access door opened (TM 9-2320-280-10).
General Safety Instructions
If filter has been used in a nuclear, biological, or
chemical (NBC) environment, special precautions
must be taken.
NBC contaminated filters must be handled and disposed of only by
authorized and trained personnel. The unit commander or senior
officer in charge of maintenance personnel must ensure that
prescribed protective clothing (FM 3-4) is used, and prescribed
safety measures and decontamination procedures (FM 3-5) are
followed. The local unit SOP is responsible for final disposal of
contaminated air filters.
. For instructions on replacement of rivets, refer to para. 10-66.
l The procedures for replacing the NBC gas filter and bracket are
basically the same for M996, M996A1, M997, M997A1, and
M997A2 ambulances. This procedure covers NBC filter and
bracket in M997, M997A1, and M997A2 ambulances. The basic
differences in M996 and M996A1 ambulances are:
PVC air line is replaced by flex tube.
Bracket is installed on NBC door and secured with four
rivets and eight washers.
l Note direction of gas filter air flow arrow for installation.
1. Loosen two clamps (1) on ends of gas filter (9) and connectors (2).
2. Unhook two latches (8) from bracket (5) on gas filter (9).
3. Remove gas filter (9) from connectors (2) and bracket (5).
Perform step 4 for M997, M997A1, and M997A2 vehicles only.
4. Remove four capscrews (7), lockwashers (6), bracket (5), and two spacers (4) from body (3). Disc