TM-9-2815-220-24 Maintenance Manual for AVDS-1790-2CA AVDS-1790-DA and AVDS-1790-2DR Engines Download
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TM 9-2815-220-24 INTAKE AND EXHAUST VALVE TIMING PROCEDURE 0035 00 TIMING ADJUSTMENT (Continued) 8. Verify setting. a. Check valve timing by rotating flywheel clockwise, as viewed from the flywheel end, approximately 1/8 turn to remove gear backlash, then turn counterclockwise until the intake valve is just closed. b. Stop rotating the flywheel the instant the valve adjusting screw pad (12) becomes free. 12 B A c. Observe position of flywheel timing mark "6R INT CLOSE .100 CLR" (A). d. When timing mark (A) is aligned within 1/8 inch of engine timing mark (B), the valve timing is correct. Go to Installation. e. If timing mark is not aligned within 1/8 inch, withdraw shouldered shaft and repeat steps 3 through 8. NOTE When correct timing cannot be obtained as described above, it may be necessary to set timing mark (A) 1/8 to 1/4 inch out of alignment with mark (B) before installing shouldered shaft (22). WP 0035 00-10