ARMY TM 9-2815-260-24 AIR FORCE TO 38G1-126-2 MARINE CORPS TM 09244A/09245A-24 4-54 d.    Installation. (1) Remove all covering installed during step a (11). (2) Lubricate sealing ring (32, Figure 3-17) with clean engine oil.  Install sealing ring into groove on front face of fuel injection pump mounting flange. CAUTION Index key is easily damaged if fuel injection pump is installed improperly.   Insure that fuel injection pump shaft is properly aligned with pump drive gear.  Pump drive gear should not move when initially installing shaft key into pump drive gear key slot.  Failure to comply could result in damage to equipment. (3) Align shaft key (25, Figure 3-17) pin on fuel injection pump shaft with pump drive gear key slot.   Loosely position fuel injection pump on mounting studs while inserting pump shaft into drive gear. (4) Check pump shaft and index pin for proper alignment with pump drive gear key slot. CAUTION Index key is easily damaged if fuel injection pump is installed improperly.   DO NOT tighten nuts more than three full turns on mounting studs.   Failure to comply could result in damage to equipment. (5) Position flat washers (37) and lock washers (38) on mounting studs (24).  Position nuts (23) on mounting studs and tighten only three turns. CAUTION Index key is easily damaged if fuel injection pump is installed improperly.   DO not use tightening force of nuts (29) to pull pump shaft into drive gear. (6) Position fuel injection pump mounting flange flush to engine front plate.  Tighten mounting stud   nuts (23) finger tight. (7) Push pump drive gear firmly onto fuel injection pump shaft taper.  Install washer and retaining nut. Torque nut to 150 lb-ft (203 Nm). (8) Position O-ring (7, Figure 4-61) and access cover plate (8) on front plate.  Apply Thread Lock and Sealer (LOCTITE 242) to cap screw (9) threads.  Install cap screws and torque to 17 lb-in (2 Nm). (9) Align timing mark on fuel injection pump flange with timing mark on front plate.  Torque nuts (3, Figure 4-42) to 20 lb-ft (27 Nm). (10) Connect fuel injection pump pressure lines.  Begin at outlet port for cylinder 1 (1, Figure 4-43) and continue around in counterclockwise direction, attaching lines in same order as engine firing (1-5- 3-6-2-4).  Refer to Figure 4-43 for detailed view.