DIFFERENTIAL (REAR)
4A2–25
Gear Tooth Pattern Check
Checking the ring gear to pinion tooth pattern is to be
done only after setting up the axle according to the
methods in this section. The pattern check is NEVER to
be used as an initial check, or instead of checking pinion
depth and backlash adjustments.
This check is only to be verify the correct adjustment of
the gear set after set up.
425RS038
Legend
EndOFCallout
1. Wipe all oil out of the carrier, and carefully clean
each tooth of the ring gear.
2. Use gear marking compound 1052351 or equivalent
and apply this mixture sparingly to all ring gear
teeth, using a medium-stiff brush. When properly
used, the area of pinion tooth contact will be visible
when hand load is applied.
3. Tighten the bearing cap bolts to the specified
torque.
4. Expand the brake shoes until a torque of 54 to
68N·m (5.5 to 6.9kg·m/40 to 50 lbft.) is required to
turn the pinion. A test made without loading the
gears will not give a satisfactory pattern. Turn the
pinion flange with a wrench so that the ring gear
rotates one full revolution, then reverse the rotation
so that the ring gear rotates one revolution in the
opposite direction.
(1) Heel
(2) Toe
(3) Concave Side (Coast)
(4) Convex Side (Drive)