Provide adequate ventilation when using dry cleaning solvent (Federal Specification P-D- 680, Type 11).  Avoid prolonged breathing of vapors and minimize skin contact. c. Wipe  out  cavity  of  cooling  passages  with  a  lint free   cloth   dampened   in   solvent,   per   Federal Specification P-D- 680, Type II.  Allow to air dry. d. Install  the  cooling  ducts  for  the  engine  cylinders and blower assembly. 5-18.    Air  Compressor  Crankcase      Filter  (Figure  5-12). To   clean   air   compressor   crankcase   filter,   proceed   as follows: a. Unscrew two hose clamps.  Disconnect breather hose  and  crankcase  filter  hose  from  crankcase filter.  Remove filter. Provide adequate ventilation when using dry cleaning solvent (Federal Specification  P-D-  680,  Type  II).    Avoid prolonged     breathing     of     vapors’     and minimize skin contact. Figure 5-12.  Air Compressor Crankcase Filter b. Soak  filter  in  solvent,  per  Federal  Specification P-D-  680,  Type  II,  to  clean  internal  element  of sludge and blow-by material. c. After agitating filter in solvent, shake filter dry. d. Using hose clamps, attach filter to breather hose and crankcase filter hose. 5-19.    Engine  Crankcase  Breather  Sieve  (Figure  5-13). To clean the engine’s crankcase breather sieve, proceed as follows: a. Using  a  13  mm  deep  socket,  remove  nut  and washer from stud. b. Remove breather cover and tube from stud. c. Remove    gasket,    spring,    stroke    limiter,    valve diaphragm, and valve plate  from  stud.  Remove intermediate ring gasket from crankcase. d. Using  a  13  mm,  deep  socket,  remove  nut  and stud from crankcase. e. Remove sieve from crankcase. Provide adequate ventilation when using dry cleaning solvent (Federal Specification  P-D-  680,  Type  II).    Avoid prolonged breathing of vapors and minimize skin contact. f. Soak  sieve  in  solvent,  per  Federal  Specification P-D-680,  Type  II,  to  clean  sieve  of  slidge  and blow-by material. g. After agitating sieve in solvent, shake sieve dry. Do   not   over   tighten   nut   against   sieve screen. h. Using   one   nut   and   stud,   assemble   sieve   to crankcase. i. Place    valve    plate,    valve    diaphragm,    stroke limiter, and spring over stud. j. Assemble gasket and breather cover and tube to stud using one flat washer and nut. 5-12