TM    55-2835-209-23 Section  II  REPAIR  -  WELD  FUEL  CONTROL  UPPER  COVER  CRACKS 4-2   REPAIR   -   WELD FUEL CONTROL UPPER COVER CRACKS (AVIM) INITIAL SETUP Tools: Air Blow Gun Air Hose Arc Welder Drill Bit 3/32 inch Engine  Repairman’s  Tool  Kit  (T47) Insulated  Mittens Plastic  Apron Pneumatic Drill Rubber  Gloves Safety  Glasses Vapor  Degreaser Welder’s  Apron Welder’s Helmet Personnel  Required: 44E   Welder/Machinist 68B Aircraft Powerplant Repairer Materials/Parts: Cotton  Applicator  (D10) Filler Rod Machinery  Towel  (D20) Methyl-Ethyl-Ketone   (D21) Penetrant  Inspection  Kit  (D27) 1,1,1-Trichloroethane   (D41) References: Tasks  4-3,  8-2 TM   55-1500-204-25/1 Equipment  Conditions: Fuel  Control  Upper  Cover  Removed From APU General  Safety  Instructions: 1,1,1-Trichloroethane   is toxic to skin, eyes and respiratory tract. Skin and eye protection are required. Avoid  repeated  or  prolonged contact. Work in a well- ventilated area. Compressed  air  is  dangerous when  directed  toward  your- self or another person. The airstream  or  material  blown by the airstream can cause injury particularly to the eyes  and  face. Use  goggles to protect eyes and face. Do  not  exceed  30  PSI.  Do not  direct  airstream  toward yourself or another person. Penetrant  process  solutions are toxic to skin, eyes and respiratory tract. Skin and eye protection required. Avoid  repeated  or  prolonged contact. Good  general  ven- tilation  is  normally  ade- quate. Power  tool  operations  create airborne particles. Eye protection  is  required.  Re- move jewelry prior to use. Adequate ventilation or res- pirator is required. Methyl-ethyl-ketone  (MEK)  is flammable and toxic to eyes, skin and respiratory tract. Avoid  all  contact.  Skin  and eye protection and vapor control are required. I I Change 1 4-3