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Assembly After Repair
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TM-5-4210-220-34 Truck Firefiighting 1000 GPM Multipurpose Model 2500L Manual
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Fuel Injector Tube Repair
TM 5-4210-220-34 2-19. ENGINE - Continued (13)  Install the spill deflector (18) over the barrel of the bushing (13). (14)  Place the check valve (14) centrally on top of the bushing (15)  Place the check valve cage (15) over the check valve (14) and against the bushing (13). (16)  Insert the spring seat (17) in the valve spring (16).  Insert this assembly into the spring cap (18), spring seat first. (17)  Insert the needle valve (19), taper end down, into the spray tip (20). (18)  Place  the  spring  assembly  on  ;op  of  the  check  valve  cage,  spring  end  down.    Place  the  spray  tip assembly on top of the spring assembly; the quill end of the needle valve in the hole in the spring cage (19)  Lubricate the threads of the injector nut (23) with test oil J26400.  Carefully lower the injector nut over the injector  assembly.    Thread  the  nut  onto  the  injector  body  by  hand.    Rotate  the  spray  tip  as  the  nut  is being threaded.  Tighten nut by hand.  When as tight as possible, the spray tip should be impossible to turn by hand. (20)  Use socket J4983-01 and a torque wrench to tighten the injector nut to 75 ft lb (115 Nm). (21)  Check the area between nut and body.  The seal must not be extruded out of the body; replace seal and reassemble using a new nut (23). (22)  Slide the head of the plunger (5) into the follower (4). (23)  Invert the Injector in the holding fixture J22396. (24)  Push the injector control rack all the way In.  Place the follower spring (6) on the injector body (8). (25)  Place the stop pin (7) on the injector body so that the follower spring rests on the narrow flange of the stop pin. (26)  Aline the slot in the follower (4) with the stop pin hole in the injector body. (27)  Aline the flat side of the plunger with the slot in the follower. (28)  Insert the free end of the plunger into the Injector body top.  The plunger follower assembly should go all the way into the body until the follower rests on top of the spring.  Ensure none of the components are rotated in this process.  Do not force the plunger.  Withdraw and aline If required. (29)  Press down on the follower, and at the same time, press the stop pin (7) into the hole in the body.  When in place the spring will hold the stop pin in position. (30)  Release the follower slowly to check everything is held in place correctly. (31)  Place the Injector in the concentricity gage J5119 and adjust dial indicator to zero. 2-189

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