TM 10-3930-659-20 14-14.    CAB RECIRCULATING FILTER REPLACEMENT. This Task Covers: a. Removal c. Installation b. Cleaning and Inspection Initial Setup: Materials/Parts: Tools/Test Equipment: • Detergent (Item 17, Appendix C) •  General mechanic's tool kit (Item 44, Appendix F) General Safety Instructions: • If NBC exposure Is suspected, all air filter media must be handled by personnel wearing protective equipment. WARNING If NBC exposure Is suspected, all air filter media should be handled by personnel wearing protective equipment.  Consult your NBC Officer or NBC NCO for appropriate handling or disposal procedures. a. REMOVAL 1. Loosen two screws (1), and remove cover (2) and foam filter (3) from cab rear panel (5). 2. If damaged, remove two washers (6) and screws (1) from cover (2). 3. If damaged, remove two clips (4) from cab rear panel (5). TA706819 14-33