TM 9-6115-604-34 NAVFAC P-8-633-34 (s) Replace the fuel adjusting screw (48) if it is scored or grooved. (t) Replace the control end (51) if it is worn at the adjusting screw (55) contact points. (u) Check  the  filter  spring  (59)  for  cracks,  distortion,  and  mss  of  tension.    Replace  the  filter  spring  if  it  is cracked  or  distorted.    The  tension  is  not  critical,  but  replace  the  filter  spring  if  it  will  not  hold  the  filter element (60) against its seat, and the fuel filter cover (58) firmly against the snap ring (56) when installed. Replace the fuel filter cover (58) if the packing groove is damaged. (v) Check the sleeve bearing (80) in the fuel pump housing (66) for wear.  The maximum inside diameter shall be 0.7525 inch (19.114 mm).  Replace a worn sleeve bearing as follows: 1 Thread  the  sleeve  bearing  using  a  112  inch  NPT  pipe  tap,  and  install  a  1/2  inch  pipe  plug  in  the sleeve bearing. 2 Working  from  the  opposite  side  of  the  housing,  use  a  hammer  and  punch  to  remove  the  sleeve bearing by driving against the pipe plug. 3 Using an arbor press, install a new sleeve bearing flush with the face of the housing bore. 4 UsingST-490 reaming fixture and a 0.750 inch reamer, ream the sleeve bushing to 0.7495 to 0.7505 inch (19.037 to 19.063 mm). Table 6-1.   Fuel Pump Throttle Shaft Color Code and Class Size COLOR RED BLUE GREEN YELLOW ORANGE BLACK GRAY PURPLE CLASS 0 1 2 3 4 5 6 7 PART NO 3017140 3017141 3017142 3017143 3017144 3017145 3017146 3017147 (w) Check the plunger driver (74), spacer (76), and governor plunger (77) for scoring and grooving.  Check the plunger driver (71) and plunger (73) for scoring and grooving.  Replace all scored or grooved parts.  If the plunger (77 or 73) is to be replaced, select fit a new one in accordance with step (y), below. NOTE The   replacement   procedure   for   the   upper   governor   barrel   is   the   same   as   for   the   lower governor barrel. (x) Check  the  lower  governor  barrel  (82)  for  scoring  or  grooving.    Check  the  upper  governor  barrel  (83)  for scoring or grooving.  If the lower or the upper governor barrel is scored or grooved, replace as follows: 1 Scribe a match mark across the face of the fuel pump housing (66) and lower and upper governor barrels (82 and 83) as an aid to correct alignment of the new governor barrel. 2 Heat the fuel pump housing (66) in a control led heat oven to 300F (149C). 3 Remove  the  fuel  pump  housing  (66)  from  the  oven,  and  remove  the  lower  and  upper  governor barrels (82 and 83) and lower and upper spring pack housings (81 and 84) using an arbor press if necessary. NOTE Replacement governor barrels are available in standard 1.5020 to 1.5025 inch (38.15 to 38.16 mm) diameter, and 0.010 inch (0.25 mm) or 0.020 inch (0.51 mm) oversize. 4 Allow  the  fuel  pump  housing  (66)  to  cool,  and  measure  the  inside  diameter  of  the  governor  barrel bore in the fuel pump housing, and the outside diameter of the new governor barrels (82 and 83).  To allow for a press fit, the governor barrel bore in the fuel pump housing must be at least 0.002 inch (0.05 mm) smaller than the outside diameter of the governor barrel.  If the fuel pump housing bore is oversize, line bore it for a new oversize governor barrel. 6-24