 |
|||
|
|
|||
|
|
|||
| ||||||||||
|
|
 TM 10-3930-644-14&P
4. Adjust the ring gear laterally for a backlash
adjustment of .005" to .010" (backlash etched on
gear), by means of the differential side bearing
adjusting nuts. To Increase backlash, loosen
adjusting nut nearest to ring gear and tighten
opposite nut. To decrease backlash, reverse
the operation. Differential side bearings must
not be set any tighter than that which will
produce a maximum pull of 3 to 5 lbs. on a string
wrapped around the differential case.
Figure 18. Differential Tooth Pattern
Explanation of Figure 18
a. Correct adjustment.
b. Heavy contact on toe of tooth. To correct,
move ring gear away from pinion. Move
pinion towards ring gear to again secure
correct backlash.
Figure 17. Adjusting Backlash
c. Bearing too low. Heavy contact on flank
5. With the drive pinion properly installed and
of tooth. To correct, move pinion away
adjusted. rotate the pinion and hold back on the
from ring gear until contact comes to full
ring ,ear to create the effect of a load. After
working depth of gear tooth without
several rotations of the drive pinion, inspect the
bearing contact at flank. Move ring gear
teeth of the pinion where the paint has been
towards pinion to secure proper backlash.
removed by gear contact. Compare the tooth
bearing (area where paint was removed), with
d. Heavy contact at heel of tooth. To correct,
Figure 18. The tooth bearing should start at a
move ring gear towards pinion. Move
point about 1/32 to 1/16 inch from the top of the
pinion away from gear to obtain correct
tooth and continue downward to a point about
backlash.
1/32 to 1/16 Inch from the bottom of the tooth.
e. Shows heavy contact on tooth face. Move
NOTE
pinion towards gear .'l contact covers flank
Do not be concerned with the amount of
of tooth without breaking contact at face.
paint removed from the front toward the rear
Move gear away from pinion to secure
of the tooth. The amount of paint removed
correct backlash.
is determined by the amount of load applied
while rotating the drive pinion and ring gear.
6. .After proper backlash and tooth pattern are
The tooth bearing should always be more
obtained, fully tighten capscrews holding bearing
toward the toe end. or a toe bearing.
caps in place and wire in position.
7. Install adj usting nut lock and align with hole in
adjusting nut. Secure to cap with capscrew and
lockwasher.
3-145
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals