OF STANDARD STEEL WHEEL GAGE FOR DETERMINING RIM THICKNESS
Point "A" must be
against face of rim, with point "B" resting on surface of tread and
finger contacting inside face of flange at point "C". The finger at
point "D" indicates 8/16 inch as the amount of metal required to be
turned off tread to restore full narrow flange contour.
Side scale at point "E" indicates 25/16 inch of rim thickness
prior to turning. In this illustration for multiple wear wheels the
available rim thickness after turning is 17/16 inch for the defective wheel and
16/16 inch for the mate wheel.
Side Scale Finger
Reading Rim Thickness
Point "E" Point "D" After Turning
(Inches) (Inches) (Inches)
Wheel 24/16 Less 3/16 = 16/16
In the example it will be noted that the finger reading of 8/16 inch for the defective wheel, applies to the mate wheel, although the actual reading was only 3/16 inch. This is done to control tape sizes. This principle also applies to 1W and 2W wheels.
To accurately determine handling line as well as owners responsibility for loss of rim thickness in removal of slid flat, together with flange or tread wear on same wheel, gage is to be applied as indicated, outside the flat spot.
Actual side scale and finger readings must be shown in all cases.
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