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TM 9-2320-303-24-2
REAR-REAR AXLE DIFFERENTIAL CARRIER REPAIR - CONTINUED
0259 00
DIFFERENTIAL CARRIER ASSEMBLY - CONTINUED
i.
Check the Amboid Gear Backlash.
(1)
If the ring gear is being replaced, the established backlash recorded before disassembly will be used. For
new gears, the new backlash should be initially set at 0.015 in. (0.381 mm).
(2)
Adjust backlash by moving the gear only. This is done by backing off one adjusting ring and advancing the
opposite ring the same amount. Use a dial indicator mounted on the carrier-to-housing flange with the indi-
cator pointer against one ring gear tooth.
j.
Check the Tooth Contact.
(1)
Refer to paragraph WP 0257 00 for checking procedure.
(2)
With adjustments properly made (pinion at correct depth and backlash set at 0.015 in. (0.38 mm), the con-
tact in figure 5 will be procured. The area of contact is at the toe and is centered between the top and bot-
tom of the tooth.
402-714
TOOTH CONTACT
(GEARS UNLOADED)
TOOTH CONTACT
(GEARS LOADED)
Figure 5. Satisfactory Amboid Tooth Contact.
(3)
The hand-rolled pattern shown (gears unloaded) will result in a pattern centered in the length of the tooth
when the gears are under load. The loaded pattern will be almost full length and the top of pattern will
approach the top of the gear tooth.
(4)
If facilities are available for applying approximately 200 lb-ft (271 Nm) of torque or more to the pinion
shaft, the following final check of tooth contacts is suggested.
0259 00-10

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