TM 10-3930-669-20 7-10.  HOUR METER REPLACEMENT. This task covers: a.  Removal b.  Installation INITIAL SETUP Tools and Special Tools Tool Kit, General Mechanic's: Automotive (Item 1, Appendix B) Materials/Parts Cable Ties (Item 4, Appendix C) Tags, Identification ( Item 21, Appendix C) Washer, 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) Cab door opened (TM 10-3930-669-10) Batteries disconnected (Para 7-48) a.  Removal NOTE Cut cable ties as required. (1) Remove  four  screws  (1)  from  instrument panel (2). (2) Remove  screw  (3)  and  washer  (4),  and raise    instrument    panel    (2)    from    dash frame (5). NOTE Tag and mark all wires prior to removal. (3) Disconnect wire (6) from resistor (7). (4) Disconnect two wires (8) from hour meter (9). (5) Remove    nut    (10),    lock    washer    (11), bracket    (12),    and    hourmeter    (9)    from instrument     panel     (2).          Discard     lock washer. 7-23