TM 10-3930-653-14&P INSPECTION The  disassembled  parts  should  be  thoroughly  cleaned  and  air  dried  before  inspection.    Parts  which  have  been  steam cleaned should be lubricated just after they have dried.  Inspection should be performed in a clean orderly area and due care exercised to prevent dirt and foreign matter from entering the unit. (1)    Check  ball  bearings  on  each  cross  case  half  for looseness, wear or damage.  Any defective bearing should be replaced. Unit: mm (in) Checking Item Service Limit Looseness of ball bearings on each cross 0.2 case half   (0.008) (2)      Check   ring   gear   teeth   for   wear,   breakage,   or damage.  If insignificant repair with oil stone.  If they are excessively worn or damaged, replace ring gear with a new one. Unit: mm (in) Service Checking Item Standard Value Limit Displacement over seven (7) 78.513-78.583 78.363 teeth of ring gear (3.091-3.094) (3.085) (3)  Using a dial gauge, check ring gear for deflection.  If an excessive deflection is found, replace ring gear. Unit: mm (in) Service Checking Item Standard Value   Limit Deflection of side face of 0.05 (0.002) -- ring gear (4)    Using  a  dial  gauge,  check  ring  gear  fitting  part  of cross   case   for   deflection.      If   deflection   is   slight, repair  by  a  lathe.    If  excessive  deflection  is  found, replace cross case with a new one. WARNING Dry  cleaning  solvent  P-D-680  is  toxic and     flammable.          Wear     protective goggles and gloves and use only in a well   ventilated   area.      Avoid   contact with skin, eyes and clothes and don’t breathe   vapors.      Do   not   use   near open flame or excessive heat.  If you become   dizzy   while   cleaning   with solvent, get fresh air immediately and get medical aid.   If  contact  with  skin or clothing is made, flush with water. If  contact  with  eyes  is  made,  wash your eyes with water and get medical aid immediately. Fig. 4-411.  Checking Ball Bearings Fig. 4-412.  Checking Ring Gear and Cross Case Unit: mm (in) Service Checking Item Standard Value Limit Deflection of ring gear fit- 0.05 (0.002) -- ting part of cross case I.D.  of side gear fitting 54.00-54.03 -- part of cross case (2.126-2.127) -- (5) Check side gear fitting part of each cross case half for damage or wear.  If excessive wear or damage is found, replace cross case. 4 - 191