Governor - TM-10-3930-634-340064

TM10-3930-634-34

age to gears and shafts may result.

(8) Secure the cover in place with screws (7) and

washers (8).

(9) After assembly rotate thepumpshaft byhand

to make certain that the parts rotate freely. If the

shaft does not rotate freely, attempt to free it by tap-

ping a corner of the pump.

h. Installation.

(1) Remove caps from fuellines.

(2) Install fuelpump(TM 10-3930-634-12).

Governor

a. General. The mechanical governor is mounted on

the rear end plate of the engine. The governor is

driven by a gear that extends through the end plate

and meshes with the balance shaft gear. The governor

controls the engine idle speed and limits the maximum

operating speed of the engine. The governor is lub-

ricated by oil splash from the engine gear train and

distributed by revolving weights. Excess oil is re-

turned to the engine gear train through holes in the

governor bearing retainer.

b. Operation.

(1) The governor holds the injector racks in the

advanced fuel position for starting when the throttle

control lever is in the idle position. Immediately after

starting, the governor moves the fuel injector racks to

that position required for idling.

(2) The centrifugal force of the revolving low and

high speed weights is converted into linear motion

which is transmitted through the riser and operating

shaft to the operating shaft lever. One end of this lever

operates against the high and low speed springs