TM 10-3930-669-20 15-6.  CAB DOOR STEP PLATE REPLACEMENT. This task covers: a.  Removal b.  Installation INITIAL SETUP Tools and Special Tools Equipment Condition Tool Kit, General Mechanic's: Automotive Engine OFF (TM 10-3930-669-10) (Item 1, Appendix B) Parking brake applied (TM 10-3930-669-10) Wheels chocked (TM 10-3930-669-10) Cab door open (TM 10-3930-669-10) Materials/Parts Rags, Wiping (Item 19, Appendix C) Screw, Self-tapping (4) a. Removal.  Remove four self-tapping screws (1) and step plate (2) from cab (3).  Discard self-tapping screws. b. Installation.  Install step plate (2) in cab (3) with four self-tapping screws (1). NOTE Follow-on Maintenance: · Close cab door (TM 10-3930-669-10). · Remove wheel chocks (TM 10-3930-669-10). END OF TASK 15-29