TM 10-3930-669-20 13-5.  HUB REPLACEMENT (CONT). b.  Cleaning/Inspection. WARNING · Drycleaning 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 drycleaning 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. (1) Clean all parts in drycleaning solvent.  Allow to air dry. (2) Inspect the bearings and bearing cups for scratches, cracks, glazing, rust pitting, flat spots, and other wear. (3) Clean old grease out of center of wheel hub. (4) Replace all damaged parts or notify supervisor. c.  Installation. CAUTION Install hub straight on spindle, using care not to drag hub along spindle shaft, to prevent damage to hub seal. (1) Install hub (2) on spindle (5). 13-16