TM 10-3930-659-34 4-70. FORK/BOOM CYLINDER REPAIR (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 metal parts with dry cleaning solvent and dry with clean rags. 2. Inspect parts for cracks, wear, and damage.  Replace damaged parts. 3. Inspect for bent or distorted rod and barrel.  Replace damaged rod or barrel. 4. Inspect barrel for excessive scoring.  Replace damaged barrel. c. ASSEMBLY NOTE Bushing must be centered with each seal firmly seated against bushing.  Lips of seals must be facing outward. 1. Using arbor press, press bushing (25) and two seals (24) in barrel (1). 2. Using arbor press, press bushing (22) and two new seals (23) in rod (6). 3. Apply a coat of grease to two bushings (22 and 25) and four seals (23 and 24). 4. Install new lubrication fitting (21) on rod (6). 5. Install new rod seal (19) in guide (9) with lip of seal facing downward. 6. Install new wiper seal (20) in guide (9) with lip of seal facing upward. 7. Install new wear ring (18) in guide (9). 8. Install new buffer seal (17) in guide (9) with lip of seal facing upward. 9. Install two new preformed packings (15) and new backup ring (16) in guide (9). 4-291