TM 5-2420-231-23-1
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FINDING TOP DEAD CENTER (TDC) CONTINUED
15. Rotate engine counterclockwise until piston contacts valve and engine will not turn.
NOTE
When marking crankshaft pulley, any reference point can be used on the engine. Pulley
sensor boss is used for this example.
16. Place mark (Figure 4, Item 2) on crank pulley (Figure 4, Item 1), noting reference point on engine.
Figure 4. Reference Mark 2.
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17. Remove bolt (Figure 5, Item 4) from valve gauge block (Figure 5, Item 3) and valve cover threads
(Figure 5, Item 1).
18. Remove valve gauge block (Figure 5, Item 3) from number 1 rocker arm assembly (Figure 5, Item 5) and intake
rocker (Figure 5, Item 2).
Figure 5. Valve Gauge Block.
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