TM 10-3930-669-20 3-4.  ROCKER ARM ADJUSTMENT. This task covers a. Removal b. Adjustment c. Installation INITIAL SETUP Tools and Special Tools Tool Kit, General Mechanic's: Automotive (Item 1, Appendix B) Wrench, Torque (0-60 N-m) (Item 12, Appendix B) Materials/Parts Cloth, Lint-free (Item 6, Appendix C) Gasket Equipment Condition Engine OFF (TM 10-3930-669-10) Parking brake applied (TM 10-3930-669-10) Wheels chocked (TM 10-3930-669-10) Cab positioned for service (Para 15-2) Batteries disconnected (Para 7-48) a. Removal NOTE One valve cover is shown.  All four are removed the same way. Remove screw (1) washers (2), washer (3), from valve cover (4) and gasket (5) from engine (6). Discard gasket. 3-8