TM-9-2815-220-24

AVDS-1790 2CA, 2DA and 2DR Air-Cooled 12-Cylinder Diesel Engines

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL FOR AVDS-1790 2CA, 2DA and 2DR Air-Cooled 12-Cylinder Diesel Engines

TM-9-2815-220-24 - Page 240 of 1563

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