TM  10-3930-669-20 16-8.  CAB HEATER REPLACEMENT/REPAIR. This task covers: a.   Removal c.   Cleaning/Inspection e.   Installation b.   Disassembly d.   Assembly INITIAL SETUP Tools and Special Tools Tool Kit, General Mechanic's: Automotive (Item 1, Appendix B) Materials/Parts Adhesive (Item 1, Appendix C) Cable Ties (Item 4, Appendix C) Cap and Plug Set (Item 5, Appendix B) Solvent, Drycleaning (Item 20, Appendix C) Tags, Identification (Item 21, Appendix C) Nuts, Assembled (2) 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 door open (TM 10-3930-669-10) Seat fully forward position (TM 10-3930-669-10) a.   Removal. (1)   Remove seven screws (1) and cover (2) from heater housing (3). 16-20