TM 10-6640-238-13 4-63 4-28.    PURGE INTAKE DOOR DAMPER MOTOR. This task consists of: a. Remove b. Install INITIAL SET-UP Tools Required General Mechanics Tool Kit, (Appendix B, Section III, Item 1) Materials/Parts Required Lockwashers, (8) General Safety Instructions WARNING ELECTRICAL SHOCK Before  performing  any  maintenance  actions  on  electrical  equipment,  ensure  all electrical power has been turned off.  Failure to comply with this warning may result in serious injury or death. NOTE Procedures for removing and replacing the opposite purge intake door damper motor are identical to those outlined in the preceding paragraphs. REMOVE Remove Intake Door Damper Motor.  See Figure 4-18. a. Open purge intake door. b. Remove two nuts (1) and washers (2) and lift purge door limit switch (3) with mounting bracket (4) attached, clear of screen (5). c. Remove four screws (6), lockwashers (7), washers (8), screen (5), and filter (9).  Discard lockwashers. d. At 2” x 4” electrical junction box mounted on ECU plenum, remove two screws and cover.  Tag and disconnect three electrical leads from damper motor.  Attach a line to electrical leads to facilitate pulling electrical leads through conduit during installation. e. Disconnect electrical conduit (10) from motor (11). f. Remove 14 screws (12) and washers (13) from damper enclosure (14) flange and remove enclosure with damper frame (15), damper (16) and motor (11).  Carefully pull motor leads from electrical junction box and through electrical conduit (10) until electrical leads are clear and attached line is visible.  Disconnect line. g. Remove two screws (17), washers (18), lockwashers (19) and nuts (20) attaching motor linkage (21) to damper blade (22).  Discard lockwashers. h. Remove two screws (23), lockwashers (24), and washers (25) attaching motor (11) to mounting plate (26) and remove motor with linkage (21).  Discard lockwashers. i. Remove linkage (21) and remove from motor (11).