c. Wipe  out cavity of trap and accumulator bodies with  a  lint  free  cloth  dampened  in  solvent,  per Federal  Specification  P-D-680,  Type  II.    Allow bodies to air dry. Take care not to damage the fine mesh filter screen. d. Check   the   filter   screen   for   damage   such   as breaks  and  plugging  due  to  corrosion;  replace filter assembly, if damaged. e. Check   o-ring   for   deterioration,   cuts,   or   other damage.  Replace as necessary. f. Install  the  o-ring  and  clean  filter  into  top  of  trap body.  Do not overtighten. 5-13.    Line  Strainers  (Figure  5-9).    Each  time  the  trap filters    are    cleaned    and    inspected,    refer    to    FIRST, SECOND,   AND   THIRD   STAGE   TRAPS   (Section   V). The  line  strainers  shall  be  cleaned  and  inspected.    To clean and inspect the line strainers, proceed as follows: NOTE For  best  results,  use  Ultrasonic  Cleaner,  NSN  4940-00- 164-8977, (Table 2-1), to clean strainers and filters. a. From    first    and    second    stage    line    strainers, unscrew    and    remove    the    body    plug,    o-ring, washer,  and  filter  element.    From  third  stage, unscrew    and    remove    the    plug    and    screen assembly and o-ring. Provide adequate ventilation when using dry cleaning solvent (Federal Specification  P-D-  680,  Type  II).    Avoid prolonged breathing of vapors and minimize skin contact. b. Wash   line   strainer   filter   elements   and   screen filter  in-  solvent,  per  Federal  Specification  P-D- 680, Type II. Allow filter clement to air dry. c. Inspect   elements   and   filter   for   any   damage. Replace as necessary. d. Check   all   o-rings   and   seal   washers   for   any damage; replace as necessary. e. Install o-ring and clean plug and screen assembly   in   third   stage   line   strainer.      Install element, seal washer, and body plug in first and second stage line filters. f. After  compressor  is started, check for leakage around plugs with a soapy water solution applied with a brush.  Plug is leaking of solution bubbles. 5-14.    Clutch  Adjusting  Yoke  Adjustment  (Figure  5-10). When  clutch  adjustment  is  necessary,  disengage  clutch by   pulling   the   CLUTCH   operating   rod   on   the   control panel, away from control panel and proceed as follows: a. Remove     the     four     screws     and     lockwashers attaching  the  handhold  cover  to  clutch  housing assembly.  Remove cover. b. Using START switch, rotate the engine crankshaft until the adjusting lock pin is accessible.    Place  a  1/16  inch  thick  washer  of sufficient diameter over the lock pin. c. Using clutch adjustment tool (Table 2-1) disengage  the  lock  pin  from  the  floating  plate. Insert  cotter  pin.    Or  equivalent,  in  the  cross- drilled hole in the lock pin.  Allow the cotter pin in the  lock  pin  to  come  to  rest  on  the  washer;  the lock pin is now locked in the out position. d. Using    the    clutch    adjustment    tool,    turn    the adjusting  yoke  in  a  clockwise  direction  until  the lock pin in the adjusting yoke has passed one or two adjusting holes in the floating plate. e. Remove the cotter pin and washer from lock pin and  allow  lock  pin  to  seat  in  adjusting  hole  in floating plate. f. Engage clutch.  A distinct pressure should be felt when  clutch  is  engaged.    If  not,  repeat  steps  a through e until pressure is felt. g. Replace clutch housing cover and install washers and screws removed in step a. 5-15.    Clutch  Operating  Rod  Adjustment  (Figure  5-11). Each time the clutch adjusting yoke is adjusted, refer to CLUTCH   ADJUSTING   YOKE   ADJUSTMENT   (Section V), the clutch operating rod shall be adjusted.  To adjust the clutch operating rod, proceed as follows: a. Remove cotter pin and clevis pin. b. Loosen jam nut on clutch operating rod, turn rod yoke farther on to clutch operating rod  or  off  on rod   to   shorten   or   lengthen   effective   stroke   of clutch operating rod. 5-10