GMC chevrolet camaro 2000 Service Manual page 65

0-54.
Vibration Diagnosis and Correction
6. Rotate the pinion flange again and record the total
runout.
7. If the pinion flange runout is 0.15 mm (0.006 in) or
less, remove the pinion flange balance weight.
8. If the pinion flange runout is greater than 0.15 mm
(0.006 in) but not less than 0.28 mm (0.011 in),
and the runout compensation weight is at or near
the low spot, no further action is necessary. If
the runout compensation weight is not at or near
the low spot, remove the weight.
9. If the pinion flange runout is greater than 0.28 mm
(0.011 in) but not greater than 0.38 mm (0.015 in),
and the balance weight is at or near the low point,
no further action is necessary. If the runout
compensation weight is. not at or near the low spot,
remove the weight and re-index the pinion flange
until the runout is 0.25 mm (0.010 in) or less.
10. Replace the pinion flange/yolk when the runout
cannot be reduced to 0.25 mm (O.Oi O in) or less.
Then, recheck the runout. Service replacement
flanges do not have balance weights.
182274
• If necessary, add compensation weights on the
face of the pinion flange dust slinger. These
weights are tack-welded onto the slinger. You may
remove the weights with a die-grinder.
• Carefully remove the spot weld at either end of
the weight.
• Do not remove the weight unless you have
inspected the pinion flange runout and the
procedure requires weight removal.
General Information
.. Do not remove any weights on the outboard edge
of the dust slinger. These weights are present in
I
order to balance internal axle components. The \
weights are not related to the pinion flange runout.
.. If a J 35819 is not available, inspect the propeller
shaft runout as near as possible to the flange.
Rotate the shaft 180 degrees in the pinion flange.
Reinstall the shaft. Inspect the measurement at the
same location.
A large difference in the runout, greater than
0.38 mm (0.015 in), may indicate that the flange is
out of tolerance. If the runout does not change at
all, the flange is OK.
Balanced Axles
Beginning in the early i 990's, the manufacturer began
system balancing rear axles. During the build
process, these axle assemblies were spun with a
slave fixture. A balance weight was attached to the
outboard edge of the companion flange dust slinger. A
system-balanced rear axle companion flange differs
from a non-balanced flange. You must diagnose
and service this flange in a unique way.
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I I
386770
Some pinion flange assemblies have a U-shaped
deflector designed to hold a system balance weight on
the outside diameter.
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