TM 10-3930-659-34 4-11. REAR OIL SEAL REPLACEMENT (Con’t). b. 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  (380C-590C).    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 outer diameter of crankshaft flange with dry cleaning solvent and dry with clean rags. 2. Inspect crankshaft flange and flywheel housing bore for nicks and burrs.  Remove nicks and burrs with abrasive cloth. c. INSTALLATION I 1. Apply  a  light  coat  of  Loctite  adhesive  to  outer diameter of crankshaft (4).  Wipe excess sealant from rear oil seal bore. 2. Install pilot (5) on crankshaft (4). CAUTION Handle rear oil seal and wear sleeve assembly with care.  If rear oil seal and wear sleeve separate, they must  be  discarded.    Tapered  edge  of  wear  sleeve and open side of rear oil seal must be on same side and must face toward engine. 3. Position rear oil seal (1) over pilot (5) and crankshaft (4). TA708092 4-52