age to gears and shafts may result.
(8) Secure the cover in place with screws (7) and
(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.
(1) Remove caps from fuellines.
(2) Install fuelpump(TM 10-3930-634-12).
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.
(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