TM 5-3895-346-14
ENGINE OVERHAUL
GOVERNOR AND INJECTOR RACK CONTROL ADJUSTMENT
idle-speed position to the maximum speed position with a constant force, while the engine is running, and when
released it will return to the idle speed position.
Adjust Engine Speed Droop
The adjustment of the spring tension as outlined in Adjust Variable Speed Spring Tension will result in
approximately 7% droop from the maximum no-load speed to the full-load speed. This is the optimum droop
setting for most applications. However, the droop may be changed as necessary for a particular engine
application.
1.
Lower the speed droop by increasing the spring tension.
2.
Raise the speed droop by decreasing the spring tension.
NOTE
A change in the variable speed spring tension will change the engine idle speed
and maximum no-load speed, which must also be readjusted. Figure 8. Adjusting
Booster Spring
The setting is correct when the speed control lever can be moved from the
426
