Hub/Axle Flange and Wheel Stud Runout Inspection
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Hub/Axle Flange and Wheel Stud Runout Inspection
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Special Tools
GE-8001
Dial Indicator Set , or equivalent
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2.
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Mark the location of the wheels to the wheel studs and mark the specific vehicle position on each tire and wheel - LF, LR, RF, RR.
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4.
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Remove the brake rotors and/or brake drums from the vehicle. Clean the mounting surfaces of the brake rotors, the brake drums, if equipped, and the hub/axle flanges of any loose debris, rust, and corrosion.
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5.
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Position the
GE-8001
Dial Indicator Set , or equivalent, on the machined surface of the wheel hub/axle flange outside of the wheel studs.
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6.
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Rotate the hub one complete revolution in order to find the low spot.
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7.
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Set the
GE-8001
Dial Indicator Set , or equivalent, to zero at the low spot.
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8.
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Rotate the hub one more complete revolution and measure the total amount of wheel hub/axle flange runout.
Specification - Guideline
Wheel hub/axle flange runout tolerance guideline: 0.132 mm (0.005 in)
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9.
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If the runout of the wheel hub/axle flange IS within specification and the vehicle is equipped with wheel studs, proceed to step 13.
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10.
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If the runout of the wheel hub/axle flange IS within specification and the vehicle is equipped with wheel bolts, proceed to step 19.
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11.
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If the runout of the wheel hub/axle flange is marginal, the wheel hub may or may not be the source of the disturbance.
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12.
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If the runout of the wheel hub/axle flange is excessive, replace the wheel hub/axle flange. Measure the runout of the new wheel hub/axle flange.
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13.
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Position the
GE-8001
Dial Indicator Set , or equivalent, in order to contact the wheel mounting studs.
Measure the stud runout as close to the flange as possible.
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14.
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Turn the hub one complete revolution to register on each of the wheel studs.
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15.
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Zero the
GE-8001
Dial Indicator Set , or equivalent, on the lowest stud.
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16.
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Rotate the hub one more complete revolution and measure the total amount of wheel stud - stud circle - runout.
Specification - Guideline
Wheel stud runout tolerance guideline: 0.254 mm (0.010 in)
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17.
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If the runout of the wheel studs - stud circle - is marginal, the wheel studs may or may not be contributing to the disturbance.
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18.
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If the runout of the wheel studs - stud circle - is excessive, replace the wheel studs as necessary. Measure the runout of the new wheel studs.
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19.
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Inspect the threads and the tapered seat portion on each of the wheel bolts for damage.
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20.
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Wheel bolts exibiting damaged threads and/or damaged tapered seats require replacement.
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21.
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Place the threaded portion of each wheel bolt along a straight edge to inspect for straightness.
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22.
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Wheel bolts that are not straight require replacement.
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