TM 10-3930-669-34 3-17.  INJECTION PUMP TIMING GEAR REPLACEMENT/REPAIR (CONT). c. Cleaning/lnspection. • Dry-cleaning solvent (P-D-680) is TOXIC and flammable.  Wear protective goggles and gloves; use only in a well-ventilated area; avoid contact with skin, eyes, and clothes; and do not breathe vapors.  Keep away from heat or flame.  Never smoke when using solvent; the flashpoint for type I dry-cleaning solvent is 100°F (38'C) and for type II is 138°F (50'C).  Failure to do so may result in injury or death to personnel. • If personnel become dizzy while using cleaning solvent, immediately get fresh air and medical help.  If solvent contacts skin or clothes, flush with cold water.  If solvent contacts eyes, immediately flush eyes with water and get immediate medical attention. • Compressed air used for cleaning purposes will not exceed 30 psi (207 kPa).  Use only with effective chip guarding and personal protective equipment (goggles/shield, gloves, etc.).   Failure to comply may result in injury or death to personnel. (1) Clean timing gear with dry-cleaning solvent. (2) Inspect timing gear for cracks, wear, or damage. (3) Replace damaged timing gear. d.    Assembly.  Install hub (9) on timing gear (4) with three washers (8), spring washers (7) and screws (6). e.    Installation. (1) Install key (5) in fuel injection pump shaft (2) keyway in crankcase (3). 3-90