TM 10-3930-659-34 4-10. FLYWHEEL HOUSING 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. Using putty knife and dry cleaning solvent, remove gasket material from mounting surface of flywheel housing and engine block. 2. Clean all metal parts with dry cleaning solvent and dry with clean rags. 3. Inspect flywheel housing for damage.  Replace damaged flywheel housing. 4. Inspect threaded parts for damaged threads.  Repair damaged threads using tap and die threading set. c. INSTALLATION 1. If removed, install two pins (8) and pipe plug (7) in flywheel housing (2). 2. If   removed,   install   plug   (5)   and   screw   (6)   in flywheel housing (2). TAT708088 4-48