GMC Chevrolet Camaro 1998 Service Manual page 85

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General Information
6. For two-piece propeller shafts, if the runout
exceeds the tolerances at one or more points:
6.1. Measure the rear propeller shaft.
6.2. Mark the position of the rear shaft in the
pinion flange, then remove the rear shaft.
6.3. Measure the front propeller shaft runout on
the tube and the stub shaft.
6.4. Replace the propeller shaft if either
measurement is out of tolerance.
Refer to Propeller Shaft Runout Specifications
Important: When you replace a propeller shaft, check
the new shaft for runout. Double-check the pinion
flange runout if the replacement shaft runout is also
out of tolerance.
Measuring Pinion Flange Runout
Tools Required
• J 8001 Dial Indicator Set
• J 23409 Dial Indicator Extension
• J 35819 Flange Runout Gage
1. Place the vehicle on a suitable hoist. Refer to
Lifting and Jacking the Vehicle Allow the wheels
to rotate freely.
2. Remove the propeller shaft from the pinion flange.
3. Install the J 35819
Important: The dial indicator will have inverted
readings. You are measuring the inside diameter of
the flange, and not the outside diameter. The highest
reading on the dial indicator is the low spot. The
lowest reading is the high spot.
4. Rotate the pinion shaft 360 degrees and zero the
dial indicator on the low spot.
5. Rotate the pinion flange again and record the total
runout.
6. If the pinion flange runout is 0.15 mm (0.006 in) or
less, remove the pinion flange balance weight.
7. If the pinion flange run out is over 0.15 mm
(0.006 in) but no less than 0.28 mm (0.011 in), and
the runout compensation weight is at or near
the low spot, then no further action is necessary.
Remove the weight if the runout compensation
weight is not at or near the low spot.
8. If the pinion flange runout is more than 0.28 mm
(0.011 in) but no greater than 0.38 mm (0.015 in),
and the balance weight is at or near the low
point, then no further action is necessary. Remove
the weight and re-index the pinion flange until
the runout is 0.25 mm (0.01 O in) or less if
the runout compensation weight is not at or near
the low spot.
9. Replace the pinion shaft when the runout is
0.25 mm (0.010 in) or less. Then, recheck the
runout. Service replacement flanges do not have
balance weights.
Vibration Diagnosis and Correction 0-73