Limiting Speed Governor
DETROIT DIESEL 53
Fig. 5 - Adjusting Engine Idle Speed
Fig. 6 - Adjusting the Buffer Screw
temperature, loosen the lock nut and turn the buffet
screw in (Fig. 6) so that it contacts the differential lever as lightly as possible and still eliminates engine
Do not increase the engine idle speed more than 15 rpm with the buffer screw.
2. Recheck the maximum no-load speed. If it has increased more than 25 rpm from the maximum speed attained in
Step I, back off the buffer screw until the increase is less than 25 rpm.
3. Hold the buffer screw and tighten the lock nut.