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Page Title: DISASSEMBLY
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TM 5-2420-222-34 3-19.  CONTROL CAMS, GEARS, AND BUSHINGS REPLACEMENT (Con’t). b. DISASSEMBLY 1. Using gear and bearing mechanical puller kit, remove control cam spur gear (8) from control cam (9) and woodruff key (14). 2. Remove woodruff key (14) from control cam (9). c. CLEANING AND INSPECTION WARNING Dry  cleaning  solvent,  P-D-680,  is  toxic  and  flammable.    Always  wear  protective goggles  and  gloves,  and  use  only  In  a  well-ventilated  area.    Avoid  contact  with skin, eyes, and clothes, and DO NOT breathe vapors.  DO NOT use near open flame or  excessive  heat.  The  solvent's  flash  point  is  100°F-138°F  (38°C-59°C).    If  you become dizzy while using cleaning solvent, Immediately get fresh air and medical help.  If solvent contacts eyes, Immediately wash your eyes and get medical aid. 1. Clean all metal parts with dry cleaning solvent and rags.  Dry thoroughly with clean, dry rags. 2. Inspect control cam and three bushings for cracks, breaks, and abnormal wear. 3. Using vernier caliper, measure inside diameter of bushings at several locations.  Inside diameter must be 1.502- 1.504 in.  (38.151-38.202 mm). 4. Using micrometer caliper, measure outside diameter of three control cam journals at several locations.  Outside diameter must be 1.4995-1.5005 in.  (38.0873-38.1127 mm). 5. Subtract smallest measurement taken in step 4 from largest measurement taken in step 3 to determine bushing- to-journal clearance.  Clearance must be 0.0015-0.0105 in.  (0.0381-0.2667 mm). 6. Inspect  thrust  plate  for  cracks,  bends,  and  breaks.    Using  vernier  caliper,  measure  thickness  of  thrust  plate. Thickness must be 0.117-0.124 in.  (2.972-3.150 mm). TA701294 3-112

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