7 Specifications
52
Meritor Maintenance Manual MM-15103 (Issued 07-17)
Table I: Drive Pinion Bearings — Preload
Table J: Drive Pinion — Depth in Carrier
Table K: Main Differential Bearings — Preload
Table L: Main Differential Gears — Rotating Resistance
4 Flange Side Bearing Cap
Capscrew
M20 x 2.5-6g Class 10.9 Initial torque: 20 ± 8 (25 ± 10)
Final torque: 320-400 (430-540)
5 Plain Side Bearing Cap
Capscrew
M16 x 2.0-6g Class 10.9 Initial torque: 20 ± 8 (25 ± 10)
Final torque: 200–258 (270-350)
6 Flange-to-Ring
Gear-to-Plain Case
Capscrew
M16 x 2.0-6g Class 12.9 Preferred Method
150 lb-ft (203 N폷m) plus angle tighten to 30 degrees ± 1
degrees
Resultant peak torque must be a minimum of 260 lb-ft
(352 N폷m).
Optional Method
290 ± 15
(393 ± 20)
7 Drain and Fill Plugs 0.75″-14 35 Minimum (47.5 Minimum)
8 Breather 0.38″-18 25 ± 5 (30 ± 7)
Fastener Thread Size
Torque Value
lb-ft N폷m
Specification New bearings 30-60 lb-ft (3-6 N폷m)
Used bearings 20-50 lb-in (2.25-5.65 N폷m)
Adjustment Preload is controlled by the
thickness of the spacer between
bearings.
To increase preload, install a thinner spacer.
To decrease preload, install a thicker spacer.
Specification Install the correct amount of shims between the bearing cage and carrier. To calculate, use old shim
pack thickness and new and old pinion cone numbers.
Adjustment Change the thickness of the shim pack to get a good gear tooth contact pattern.
Specification 15-35 lb-in (1.7-3.5 N폷m)
Expansion between bearing caps — 0.002-0.009-inch (0.050-0.23 mm)
Adjustment Preload is controlled by tightening both adjusting rings after ZERO end play is reached.
Specification 10 lb-ft (13.6 N폷m) applied to one side gear
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