TM 5-2420-231-23-2
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ADJUSTMENT
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1. Install engine turning tool (Figure 4, Item 2) and two starter bolts (Figure 4, Item 1) on flywheel housing
(Figure 4, Item 3).
Figure 4. Engine Turning Tool.
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NOTE
The number 1 cylinder is at the front of the engine (closest to the radiator).
Manually rotate engine in a clockwise direction only.
2. Refer to Figure 5 to identify intake and exhaust valve arrangement.
Figure 5. Cylinder Identification.
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3. With assistance, rotate engine clockwise until the number 3 cylinder intake valve pushrod is at highest upward
travel and the number 1 intake and exhaust valve pushrods are at lowest downward travel.