TM 10-4320-315-242-55. MAINTENANCE OF CYLINDER HEAD ASSEMBLYThis task covers: a.AdjustINITIAL SETUP:ToolsEquipmentConditionsGeneral Mechanics Tool KitPumping assembly is shutdown (refer to TM 10-4320-(Item 1, Appendix B)315-10).Cylinder head covers removed (para. 2-54).ADJUST. (Figure 2-43)(1) Turn crankshaft pulley counterclockwise (CCW) until both valves at No. 1 cylinder are overlapping.(2)Adjust the valves indicated in Detail A that are adjustable as follows:(a) Loosen locknut of adjusting bolt (1) on valve.Figure 2-43. Valve Adjustment2-105
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