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 TM 55-1905-219-14-5
3-91.2. ENGINE TIMING (Cont).
(12) Rotate the crankshaft opposite the direction of rotation slowly until the hand on the dial indicator just
stops moving.
(13) Rotate the crankshaft opposite the direction of rotation until the indicator hand just starts to move.
Reset the dial to "0". Continue turning the crankshaft slowly until indicator reading is .010" - then
stop turning.
(14) Scribe a second line on the vibration damper in the same manner as in step 11.
(15) Scribe a third line halfway between the first two lines. This is positive top-dead-center. The three
scribed lines are shown on the crankshaft pulley. Remove the indicator from the engine.
NOTE
Make certain that the crankshaft pulley retaining bolts is not loosened while
turning the crankshaft. The bolt must be tightened to 290-310 lb-ft (431.5-461.3
kg/m) torque if it becomes loose.
(16) Install the injector assembly. Swing the injector and valve rocker arms back into position and install
the rocker arm brackets and tighten the bolts to the specified torque. Adjust the valve clearance and
time the injector. Rotate the crankshaft until the exhaust valves in the selected cylinder are open.
(17) Install the dial indicator again so the spindle of the indicator rests on top of the injector follower as
illustrated. Set the indicator dial to "0". Rotate the crank-shaft slowly in the direction of rotation, and
stop when the TDC mark on the vibration damper or crankshaft pulley lines up with the pointer.
3-1569
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