TM   5-2815-241-34&P FUEL  PUMP  -  CONTINUED ACTION LOCATION ITEM REMARKS 25. Gear pump housing   (5) Drive  gear  and  shaft (3)  and  spur  gear and  idler  shaft  (4) a. b. c. d. 26. New  gasket  (6)  and gear  pump  cover  (1) a. b. Lubricate gear pump housing, drive gear and shaft, and driven gear and shaft with lubricating   oil. Clean prussian blue from gear pump housing end of driven gear and shaft, and position driven gear and shaft into gear  pump  housing. Position drive gear and shaft into gear pump  housing. Using thickness gage, check gear back- lash  as  shown. Backlash  must  not  exceed  0.004  inch (0.102 mm). Install  red,  0.002-inch  (0.51  mm),  or purple,  0.0015-inch  (0.38  mm),  new gasket  as  determined  in  step  24. Position gear pump cover on gear pump housing  (5),  making  sure  dowels  and dowel holes are alined, and press together. Check that pump turns freely by finger pressure  only. c. TA  242537 2-299