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 TM 55-1905-217-34
(g) If required, the weight carrier (34) may be pressed from the governor weight shaft and a new carrier
installed.
c. Cleaning and Inspection.
(1) Clean all parts with cleaning solvent Fed. Spec. PD-680 and dry thoroughly.
(2) Revolve the ball bearings slowly by hand. Replace bearings which indicate rough or tight spots.
Also replace bearings which are corroded or pitted.
(3) Examine the riser thrust bearings for excessive wear, flat spots, or corrosion. If any of these
conditions exist, install a new riser and bearing assembly.
(4) Inspect the weight carriers, weights and retaining pins for wear.
(5) Inspect the bushings in weights and replace if worn excessively.
(6) Inspect the operating shaft and bushing for excessive wear.
If excessive wear is noted, a new bushing and shaft must be installed.
d. Repair.
(1) Repair all damaged or defective parts as necessary.
(2) Replace a governor and control assembly that is damaged beyond repair.
e. Reassembly.
(1) Governor cover.
(a) If the needle bearings were removed from the governor cover, place the governor cover on
the bed of an arbor press with inner face of the cover down. Start the upper bearing straight into the bearing
bore of the cover with the number on the bearing up. Insert the bearing installer J21068 in the bearing and
press the bearing in until the shoulder on the tool contacts the cover.
(b) Turn the cover over and start the second bearing, number side up, in the bearing bore. Press
the bearing in flush with the cover with tool J32068.
NOTE
Do not use impact tools to install needle bearings.
(c) Apply lubricant to the retaining pin and place the cam (4) over the pin with the boss of the
cam up. Install the stop lever, if used.
(d) Place the washer over pin and secure with the spring retainer.
(e) Install the plug in the throttle shaft.
(f) Pack the needle bearings (7), with grease. Then, slide the' throttle shaft assembly through
the bearings.
(g) Insert the seal ring (6) over the shaft and into the counterbore against the upper bearing.
Place the retainer (5) over the shaft and against seal ring.
(h) Start the throttle shaft lever (2) over the throttle shaft (8) with the holes in lever and shaft for
tapered pin (71) in alinement.
(i) Support the lower end of throttle shaft on the bed of arbor press, then place a sleeve on
throttle lever and under ram of press. Aline the slot in cam (4) with pin in throttle lever, then press the lever
down on the shaft until hole in the lever is in line with the hole in the shaft.
(j) Insert the tapered pin (71) in the hole of the lever, then support the lever and cover assembly
on a steel block and drive the pin into place.
(k) Position the speed control lever (1) on the throttle shaft (8) and tighten the retaining bolt (72).
(l) Attach one end of the spring (3) in small hole of cam (4).
(2) Governor control housing.
(a) Place the washer (13) over short finished end of the operating shaft (59). Start the bearing
(60) over end of the shaft. Support the opposite end of the shaft on the bed of a press. Press the bearing on
the shaft tight against the washer with a sleeve which has the same diameter as the bearing inner race.
(b) With the pivot pin in the operating lever (10) up, start the lever over the end of shaft with the
flat on the shaft registering with the flat surface in the lever. Press the lever on the shaft tight against the
bearing (60).
(c) Lubricate the bearing and operating shaft bushing (53) in the housing with clean engine oil.
Insert the lever and operating shaft assembly in the control housing.
(d) Position the operating fork (51) over the lower end of the operating shaft, so the finished side
of the fork finger will rest against the thrust bearing (45) when assembled as shown in figure 3-26.
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