TM  10-3930-638-24&P 3-6.   FUEL   SYSTEM   MAINTENANCE   (cont) c. Fuel Injection Pump (cont). STEP LOCATION ITEM ACTION REMARKS INSTALLATION  (cont) 14 cont) 15 NOTE If  engine  has  been  cranked  after  removing  fuel  injection  pump, reposition engine at TDC for No. 1 cylinder (para 3-5a(1)). Fuel injection a. New O-ring (4) pump (3) and drive b. Two timing window shaft (15) screws,  cover  and gasket c. Pump rotor Position On  injection  pump  flange Remove Position Using a clean, wide bladed  screwdriver  at drive end of injection pump, rotate pump rotor to approximate position of aligning hole of tang on drive shaft (15) as shown below. Then rotate pump rotor until timing lines in pump window are aligned NOTE If holes on drive shaft tang and pump rotor are not aligned, pump will be 180 degrees out of time. 3-84