Power Train Disassembly & Assembly
Adjust Preload of Differential
Bearings
Specifications
•
Preload of differential bearings
– 15 to 35 lb-in (1.7-3.9 N•m) torque.
•
Expansion between bearing caps (leg spread)
– 0.002 to 0.009 inch (0.050-0.229 mm)
Dial Indicator Method
Use the dial indicator or the large micrometer method
for checking and adjusting the preload of the main
differential side bearings.
1. Attach a dial indicator on the mounting flange of
the carrier.
2. Adjust the dial indicator so that the plunger or
pointer is against the back surface of the ring gear.
CAUTION : When turning the adjusting rings, always
use a tool that engages two or more opposite
notches in the ring. A “T” bar wrench can be used for
this purpose. If the tool does not correctly fit into the
notches, damage to the lugs will occur.
3. Loosen the bearing adjusting ring that is opposite
the ring gear so that a small amount of end play
shows on the dial indicator. Move the differential
and ring gear to the left and right with pry bars
while you read the dial indicator. Use the following
step a or b.
a. Use two pry bars that fit between the bearing
adjusting rings and ends of the differential case to
check preload. The pry bars must not touch the
differential bearings.
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