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TM 9-4120-389-14 (6) Purge the system with nitrogen per para.  5-4. (7) Debraze the tubing sufficient to clear the compressor (See para.  5-5). (8) Remove four locknuts and washers from cap screws. (9) Carefully maneuver compressor from unit.  Leave spacers andresilient mounts in place for installation. WARNING If compressor burn out is suspected, use care when handling compressor to avoid touching compressor sludge.  Acid in sludge can cause burns. (10) Check to see if motor burn out is indicated. h. Servicing system after compressor motor burnout WARNING If compressor burn out is suspected, use care when handling compressor to avoid touching compressor sludge.  Acid in sludge can cause burns. (1) After removal of a bad compressor from the refrigeration system, remove all external tubing and tip the compressor toward the discharge port to drain sample of oil into a clear glass container. WARNING Avoid  inhaling  fumes  and  burns  from  any  acid  formed  by  burn  out  of  oil  and refrigerant. (2) If the oil is clean and clear, and does not have a burnt acid smell, the compressor did not fail because of motor burn out.  If a burn out is not indicated, proceed to installation procedures. (3) If the oil is black, contains sludge, and has a burnt acid odor, the compressor failed because of motor burn out. 5-72

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