Section VI. OVERSPEED GOVERNOR ASSEMBLY
56. General
The overspeed governor assembly is mounted on the
side of the engine and is attached to the tachometer. The
a. On-equipment Testing and Adjustment.
governor is a fly-weight-type, incorporating a sensitive
switch. As the speed of the governor increases, the
(1) Disconnect the throttle control cable (TM
flyweights move outward against the tension of the
63820-205-20/2).
springs. When the engine speed reaches 1,650 rpm, the
plunger in the flyweight assembly contacts and actuates
(2) Start the engine and manually increase the
the sensitive switch stopping the engine.
engine speed until the engine speed
governor limits the engine to a tachometer
57. Overspeed Governor Assembly On Equipment
reading of 1,530 rpm.
Testing, Adjustment, Removal and Disassembly
Figure 14. Overspeed governor assembly, exploded view.
AGO 8456A
39