TM-9-2320-280-10 HMMWV Operator Manual Download
Page 275 of 405
TM 9-2320-280-10 (2) In the M996 and M996A1 ambulances, the precleaner/particulate filter unit (4) and two gas filters (5) are mounted in a similar configuration to the M997, M997A1, and M997A2. Entry into the NBC compartment is gained through the NBC access door (1) located directly over the driver's head by removing the safety strap (3) and loosening two captive wing head screws (2) and carefully lowering the NBC access door (1). M18 gas filters in both vehicles are replaced in a similar manner. Contaminated M18 gas filters and the precleaner/particulate filter units should only be replaced by specially-trained NBC personnel. M996 AND M996A1 2-214