TM 9-6115-604-34 NAVFAC P-8-633-34 5 Return the fuel pump housing (66) to the oven, and heat it to 300F (149C). 6 Orient  the  fuel  passages  of  the  new  governor  barrels  (82  and  83)  with  those  of  the  old  governor barrels, an     scribe a match-mark on the new governor barrel to align with the match-mark made in step 1, above.  Put a light coat of anti-seize compound MIL-A-907 on the barrel. 7 Remove  the  fuel  pump  housing  (66)  from  the  oven,  install  the  spring  pack  housings  (81  and  84), align the match-marks, and install the governor barrels (82 and 83) in the fuel pump housing using an arbor press if necessary. 8 Check that the hole in the fuel pump housing (66) and lower governor barrel (82) for the governor barrel dip (62) are aligned.  Using lock dip driver 3376136, install the governor barrel dip with the slot facing the governor end of the fuel pump housing. 9 Check that the hole in the fuel pump housing (66) and upper governor barrel (83) for the pan head screw  (63)  are  aligned,  and  install  the  pan  head  screw.    Let  the  fuel  pump  housing  (66)  cool,  and remove and reinstall the pan head screw (63) with packing with retainer (64). 10 Let the fuel pump housing (66) cool, and install the pipe plug (61) using a single wrap of teflon tape MIL-T-27730 on the pipe plug threads.  Tighten the pipe plug to 5 to 8 pound-feet (7 to 11 newton- meters). 11 Select fit new plungers (73 or 77) in accordance with step (y), below. (y) Select fit a new plunger (73 or 77) as follows (see Table 6-2). CAUTION To  avoid  damage  to  the  plunger  (73  or  77)  and  governor  barrel  (82  or  83)  follow  the  fitting Instructions carefully.  The plunger should fit without forcing.  The plungers are color coded and graded as to class of fit 1 Try a class 2 (green) plunger (73 or 77) for ft in the governor barrel (82 or 83).  If the class 2 (green) plunger fits, try a class 3 (yellow).a 2 Continue  trying  larger  class  plungers  (73  or  77)  until  one  is  found  that  will  not  enter  the  governor barrel (82 or 83). 3 Select a plunger (73 or 77) two classes smaller than the one that would not fit.  For example: if a class 4 (orange) would not enter the bore, select a class 2 (green). 4 Check to be sure that both the plunger (73 or 77) and governor barrel (82 or 83) mating surfaces are dean.  Dip the plunger in dean calibrating fluid 3375634, start the plunger in the bore, and release it. The plunger shall drop slowly into the bore of its own weight.  If the plunger hangs up, or will not drop into the lower governor barrel of its own weight, check for the presence of dirt or foreign material, and recheck the class fit in accordance with steps 1 through 3, above. Table 6-2.  Fuel Pump Governor Plunger Color Code and Class Size COLOR RED BLUE GREEN YELLOW ORANGE BLACK GRAY PURPLE CLASS 0 1 2 3 4 5 6 7 UPPER PULUNGER PART NO. 3018640 3018641 3018642 3018643 3018644 3018645 3018646 3018647 LOWER PLUNGER PART NO. 3009380 3009381 3009382 3009383 3009384 3009385 3009386 3009387 6-25