TM 5-3810-300-24&P-3
LIMITING SPEED GOVERNOR 2.7.1.1
3.
Thread a 5/16"-24 x 3" bolt into the tapped end of
Inspect the bushings in current weights and replace them
the weight shaft. Support the weight housing on
if they are worn excessively. In former weights inspect
bed of press as shown in Fig. 8 in Section 2.7.1.
the needle bearings for wear and replace if necessary.
Press the shaft from the bearing.
Inspect the operating shaft and bushing for excessive
4.
Slide the riser thrust bearing and governor riser
wear. If excessive wear is noted, a new bushing and
from the shaft.
shaft must be installed.
This bearing is specially designed to absorb thrust
Assemble Governor Cover
loads; therefore, looseness between the mating
parts does not indicate excessive wear.
1.
If the needle bearings were removed from the
governor cover place the governor cover on the bed
5.
Remove the bearing from the weight housing.
of an arbor press with the inner face of the cover
down. Start the upper bearing straight into the
6.
Mark the low and high speed weights and carrier
bearing bore of the cover with the number on the
with a center punch for identification, also note the
bearing up. Insert bearing installer J 21068 in the
position of the thin washer between the weights so
bearing and press the bearing in until the shoulder
that the parts can be replaced in their original
on the tool contacts the cover (Fig. 5).
position.
2.
Turn the cover over and start the second bearing,
7.
Remove Allen set screw from the low speed
number side up, in the bearing bore. Press the
weights. Withdraw the pins and the governor
bearing in flush with the cover with tool J 21068.
weights.
NOTE: Do not use impact tools to install needle
NOTE: If necessary the needle bearings in the high
bearings.
speed weights may be removed at this time.
3.
Apply lubricant to the cam pin and referring to Fig.
8.
If required, the weight carrier (Fig. 4) may be
2 place the cam over the pin with the boss of the
pressed from governor weight shaft and a new
cam up. Install the stop lever.
carrier installed.
4.
Place washer over the pin and secure it with the
Inspection
spring retainer.
Clean all of the parts with fuel oil and dry them with
5.
Install the plug in the throttle shaft.
compressed air.
6.
Pack the needle bearings with grease. Then, slide
Revolve the ball bearings slowly by hand. Replace the
the throttle shaft through the bearings.
bearings which indicate rough or tight spots. Also replace
bearings which are corroded or pitted.
7.
Insert the seal ring over the shaft and into the
counterbore against the upper bearing. Place the
Examine the riser thrust bearings for excessive wear, flat
retainer over the shaft and against the seal ring.
spots, or corrosion. If any of these conditions exist,
install a new riser and bearing assembly.
8.
Start the throttle control lever over the throttle shaft
with the holes (for the tapered pin) in the lever and
Examine the governor weights at the riser contact area
the shaft in alignment.
for excessive wear. If this condition exists install a new
governor weight.
9.
Support the lower end of the throttle shaft on the
bed of an arbor press, then place a sleeve
Inspect the weight carriers and retaining pins for wear.
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