Quantcast Do not move flywheel pointer after it has been placed in this position.

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ARMY TM 9-2815-254-24 AIR FORCE TO 38G1-94-2 p. q. r. s. t. u. v. w. x. y. z. Confirm that camshaft rotates smoothly by manually rotating camshaft slowly If pre-stroke is not 0.087 to 0.091 in. (2.20 to 2.30 mm), adjust as follows: (1) Rotate camshaft until No. 2 cam reaches TDC position. (2)   Insert  plunger  spring  holder  (157931-4100)  between  lower  spring  seat  (25.  FIGURE  3-8)  and  tappet  (23). (3) Remove spacer ring (26) and install spacer ring that will provide desired pre-stroke. Spacer rings are available in 0.002 in. (0.05 mm) steps. (4) Remeasure No. 2 cylinder’s pre-stroke. Set pump test stand flywheel pointer to an arbitrary angle graduation, with No. 2 cam placed in beginning of injection  position. Ensure test oil stops flowing from measuring device pipe in this position. Do not move flywheel pointer after it has been placed in this position. Remove measuring device from No. 2 cylinder. Supply test oil at high pressure to injection pump. Open nozzle holders overflow valves so test oil flows. Measure beginning-of-injection positions in order of injection. Rotate camshaft until test oil stops flowing from overflow pipe. Read pointer indication on flywheel. If angle interval is not between 89.5 and 90.5 degrees between each cylinder in firing order (1-3-4-2), adjust using  spacer  ring  (26).  If  oil  stops  flowing  prematurely,  decrease  thickness  of  shim,  if  oil  stops  flowing  too  late, increase thickness of shim. 3-57


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