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 TM 5-2410-233-23
BEVEL GEAR AND SHAFT REPLACEMENT - CONTINUED
0102 00
INSTALLATION - CONTINUED
b.
With no load, correct tooth setting is as shown.
16
The area of contact starts near toe of gear and
goes 30% up length of tooth. With this setting,
when load is put on gear it will be over correct
area of teeth.
CORRECT CONTACT
386-559
c.
If bevel pinion shaft is too far away from bevel
gear, short toe contact results. The teeth of bevel
pinion shaft will be in contact with toe ends of
convex faces (part that makes a curve toward
outside), and top edge of heel end of concave
faces (part that makes a curve toward inside). To
correct this, add shims between bevel pinion
shaft and bearing cage of transmission. Check
gear clearance (backlash) and tooth contact
again.
SHORT TOE CONTACT
386-560
d.
If bevel pinion shaft is too close to center of
bevel gear, short heel contact results. The teeth
of bevel pinion shaft will be in contact with toe
ends of concave faces (part that makes a curve
towards the inside) and the heel ends of convex
faces (part that makes a curve toward the out-
side). To correct this, move pinion shaft away
from bevel gear by removal of shims between
bearing cage of transmission and bevel pinion
shaft. After doing this, check gear clearance
(backlash) and tooth contact again.
SHORT HEEL CONTACT
386-561
0102 00-9
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