TM 10-3930-638-24&P 3-6.   FUEL   SYSTEM   MAINTENANCE   (cont) c. Fuel Injection Pump (cont). STEP LOCATION ITEM ACTION REMARKS INSPECTION  (cont) 9 Thrust plunger (10) Inspect Replace if cracked, bent or excessively worn 10 Cover  plate  (8) Inspect Replace  if  cracked,  distorted,  or  damaged 11 Injection pump flange and      Inspect Use fine stone or crocus cloth to remove mating surface on timing any nicks or burrs from mating surfaces gear  housing INSTALLATION 12 Drive shaft (15) NOTE Replacement  drive  shaft  (15)  includes  roll  pin  (16).  Perform steps a and b below only if roll pin (16) requires replacement. a. Roll pin (16) Fabricate Use 10988 P/N 138-275 roll pin and grind flat on one end to the overall length shown b. Roll pin (16) Install Press into drive shaft (15), chamfered end first, to the dimension shown below 3-82