5 Assembly and Installation
34
Meritor Maintenance Manual MM-15103 (Issued 07-17)
1. Attach a dial indicator onto the carrier mounting flange.
Figure 5.32.
Figure 5.32
2. Adjust the dial indicator so that the plunger is against the tooth
surface.
3. Adjust the dial indicator to ZERO. Hold the drive pinion in
position.
4. After reading the dial indicator, rotate the differential and ring
gear a small amount in both directions against the drive pinion
teeth. Refer to Table B.
앫 If the backlash reading is within the specification:
Check the tooth contact patterns.
앫 If the backlash reading is not within the specification:
Adjust the backlash as needed.
5. Loosen one bearing adjusting ring one notch. Tighten the
opposite ring by the same amount.
앫 To increase the backlash: Move the ring gear away from
the drive pinion. Figure 5.33.
앫 To decrease the backlash: Move the ring gear toward the
drive pinion. Figure 5.34.
Figure 5.33
Figure 5.34
NOTE: When you adjust the backlash, only move the ring gear. Do
not move the drive pinion.
6. Repeat Step 2 through Step 5 until the backlash is within
specification. Record the setting for use when you adjust the
pinion bearing preload.
Gear Set Tooth Contact Patterns
Old Gear Set and Old Shim Pack
Adjust ring gear tooth contact patterns and backlash to the setting
that was measured before the carrier was disassembled. Refer to
Table B for the correct specification.
New Gear Set and/or New Shim Pack
Adjust ring gear tooth contact patterns and backlash to the correct
specification from Table B.
In the following procedures, movement of the contact pattern in the
length of the tooth is indicated as TOWARD the “heel” or “toe” of the
ring gear. Figure 5.35.
Figure 5.35
Figure 5.32
Figure 5.33
Increase backlash.
Tighten adjusting
ring this side.
Loosen adjusting
ring this side.
1002795b
Figure 5.34
Figure 5.35
Decrease backlash.
Loosen adjusting
ring this side.
Tighten adjusting
ring this side.
1002796b
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