TM  10-3930-669-20 16-5. FRONT/REAR WINDSHIELD WIPER ARM RE PLACEMENT. This task covers: a.   Removal b.   Cleaning/Inspection c.   Installation INITIAL SETUP Tools and Special Tools Tool Kit, General Mechanic's: Automotive (Item 1, Appendix B) Wrench, Torque (O to 175 lb-ft [0-237 N-ml) (Item 12, Appendix B) Materials /Parts Solvent, Drycleaning (Item 20, Appendix C) Washer, Lock Nut, Lock Equipment Condition Engine OFF (TM 10-3930-669-10) Parking brake applied (TM 10-3930-669-10) Wheels chocked (TM 10-3930-669-10) Rear stoplight assembly removed (Para 7-31) Mast assembly pivoted 90° (TM 10-3930-669-10) a.   Removal. WARNING Use care when removing wiper arm.  Wiper arm is under spring tension and can act as projectile when released and could cause severe eye injury. NOTE Front and rear windshield wiper arms are replaced the same way.  Front windshield wiper is shown. (1)   Remove nut (1), lock washer (2), nut (3), washer (4), and wiper arm (5) from windshield wiper assembly (6).  Discard lock washer. 16-14