TM 10-6640-215-13 4-32.  REPAIR PURGE EXHAUST DOOR MACHINERY ROOM. This task covers: a.  Removal b.  Installation INITIAL SET-UP: Tools Required General Mechanics Tool Kit, (Appendix B, Section III, Item 2) Drill and Bits, (Appendix B, Section III, Item 1) Drill Set, (Appendix B, Section III, Item 1) Hand Blind Riveter, (Appendix B, Section III, Item 3) Materials/Parts Required Gasket, (Appendix F) Adhesive MM-A-1617, Type 11I, (Appendix E, Section II, Item 3) Rivets, (Appendix F) NOTE Procedures for performing this task are identical to those outlined in paragraph 4-29.  Refer to that paragraph and Figure 4-18. 4-33.  REMOVE/INSTALL MACHINERY ROOM EXHAUST DAMPER MOTOR. This task covers: a.  Removal b.  Installation INITIAL SET-UP: Tools Required General Mechanics Tool Kit, (Appendix B, Section III, Item 2) General Safety Instructions WARNING ELECTRICAL SHOCK Before  performing  any  maintenance  actions  on  electrical  equipment,  ensure  all  electrical  power has been turned off.  Death or serious injury may occur from failure to do this. REMOVAL Remove Machinery Room Exhaust Damper Motor.  See figure 4-21. a. From inside the machinery room, remove six screws and flat washers from each of the two exhaust screens and remove screens from exhaust plenum to gain access to damper and motor b. Remove  two  screws  and  cover   from  2"  x  4"  junction  box  on  plenum.    Disconnect  motor  leads  and  tag  for reconnection.  Attach line to leads to facilitate installation. 4-75