Quantcast 3-28.  FUEL INJFCTION PUMP TIMING

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ARMY TM 9-2815-256-24 AIR FORCE TO 38G1-96-2 MARINE CORPS TM 2815-24/5 o. Remove tags and connect electrical leads to injection pump. p. Connect negative cable to batteries. 3-28.  FUEL INJFCTION PUMP TIMING. 3-28.1.  Timing Using Flange Timing Mark. a. Check alignment of mark on pump flange with mark on front plate. NOTE If a timing mark does not exist on the front plate, use timing procedure in paragraph 3-28.2. b. If marks are not aligned, disconnect fuel lines to pump and loosen three mounting nuts (7, FIGURE 3-109). c. Pivot pump housing first away from cylinder block as far as slots will allow.  Then pivot it back again, but only far enough to align timing mark on the pump flange exactly with timing mark on the cylinder block front plate. d. Tighten three mounting nuts (7) securing pump to front plate to 20 ft-tbs (27 Nm). e. Connect injection pump pressure lines.  Start with outlet for fuel injection line (13, FIGURE 3-59) and continue around pump head in counterclockwise direction, attaching lines in same order as engine firing (1-5-3-6-2-4). CAUTION When  tightening  fuel  pressure  lines  at  fuel  injection  pump,  be  sure  not  to  turn  fuel  injection  pump fittings.  Turning of these fittings may cause internal pump damage. f. Tighten fuel injection lines at pump to 20 ft-lbs (27 Nm). g. Connect fuel return line and fuel supply line to pump. h. Connect throttle control system, refer to end item maintenance manual. 3-28.2.  Timing Using Internal Timing Mark. a. Clean area around timing hole cover plate on side of pump and remove cover plate (10, FIGURE 3-109). b. Using center bolt on harmonic balancer, rotate crankshaft with No.  1 piston at TDC on compression stroke. c. Check alignment of governor weight retainer and cam ring timing marks. d. If marks are not aligned, disconnect fuel lines from pump and loosen mounting nuts (7, FIGURE 3-109). e. Rotate pump counterclockwise (viewed from flywheel end) and then in opposite direction until timing marks on cam ring and governor weight retainer are aligned. f. Tighten mounting nuts (7) to 20 ft-lbs (27 Nm). g. Install timing hole cover plate (10, FIGURE 3-109) with new gasket (11).  Install screws (12) and torque to 17 in-lbs (2 Nm). h. Connect injection pump pressure lines.  Start with outlet for fuel injection line (13, FIGURE 3-59) and continue around pump head in counterclockwise direction, attaching lines in same order as engine firing (1-5-3-6-2-4). CAUTION When  tightening  fuel  pressure  lines  at  fuel  injection  pump,  be  sure  not  to  turn  fuel  injection  pump fittings.  Turning of these fittings may cause internal pump damage. i. Tighten fuel injection lines at pump to 20 ft-lbs (27 Nm). 3-131


 


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