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TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 3 Download

Page 509 of 1170

11-167. NBC GAS FILTER AND BRACKET REPLACEMENT This task covers: a. Removal b. Installation a. Removal 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). NOTE 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). Discard lockwashers (6). Manual References TM 9-2320-280-10 TM 9-2320-280-24P FM 3-4 FM 3-5 Equipment Condition 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. WARNING 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. NOTE • For instructions on replacement of rivets, refer to para. 10-66. • 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. • Note direction of gas filter air flow arrow for installation. TM 9-2320-280-20-3 11-246 Change 2 INITIAL SETUP: Applicable Models M996, M996A1, M997, M997A1, M997A2 Tools General mechanic’s tool kit: automotive (Appendix B, Item 1) Materials/Parts Four lockwashers (Appendix G, Item 135) Four blind rivets (Appendix G, Item 251)