TM 9-6115-730-24
0119
VALVE LASH CHECK
WARNING
Do not use the engine starter to turn the flywheel. Failure to comply can cause injury to
personnel.
CAUTION
All clearance measurements must be made with the engine stopped and the valves fully closed.
Otherwise, incorrect adjustments will be made resulting in engine damage.
NOTE
Valve lash adjustment is not necessary if measurement is in the acceptable range.
Engine must be turned with the eight large bolts on flywheel.
1. Remove crankshaft vibration damper and pulley (WP 0104).
2. Remove two bolts (Figure 3, Item 23), washers (Figure 3, Item 24), cover (Figure 3, Item 25), and seal
(Figure 3, Item 26) from flywheel housing.
3. Install one bolt (Figure 3, Item 23) in hole 5-6 inches (12.7-15.2 cm) above where cover (Figure 3, Item 25)
was removed. This becomes the timing bolt (Figure 3, Item 23).
4. Using eight large bolts on flywheel, turn flywheel in direction of normal engine rotation, which is
counterclockwise (CCW) when viewed from flywheel end, until timing bolt (Figure 3, Item 23) engages
with threaded hole in flywheel.
Figure 3. Valve Lash Check.
