Truing Wheel

1. Install truing arbor in wheel hub and place wheel in Wheel Truing Stand, Part No. 95500-29A. Secure arbor nuts so that hub will turn on its bearings.

2. Turn each nipple on Just far enough to cover spoke threads.

3. Start at valve hole and tighten all nipples three full turns each, using special Nipple Wrench, Part No. 94681-39. If further tightening is needed to pull spokes snug, tighten all nipples one full turn at a time until spokes are snug.

4. Check rim for centering sideways with hub, for running true sideways and concentricity. Centering rim sideways with hub and truing rim sideways must be done as one operation.

Rim must be properly centered sideways in relation to hub for correct alignment and "tracking" of front and rear wheels. Fig. 2C-6 shows method of using a straightedge to determine correct sideways centering of wheel rims as specified. Straightedge should be a perfectly straight metal bar; except on 1967 and later 16" wheels it must be notched out to clear hub flange edges as shown in figure 2C-6.

For 16 in. wheel (5.00 in. tire), place straightedge across hub on brake side and measure the distance from straightedge to rim well as shown.

For 18 in. wheel (4.00 in. tire), lay straightedge across brake side spoke flange of hub and measure distance from straightedge to rim as shown.

Adjust truing stand gauge to side of rim well as shown in Fig. 2C-7 so rim at highest point will strike gauge as wheel is rotated slowly. Loosen nipples at highest point of rim on gauge side and tighten nipples on opposite side the same amount. Repeat this operation until rim runs true sideways. Reverse loosening and tightening of nipples as explained above if rim moves too far away from gauge. After each loosening and tightening of spokes, check rim in relation to hub as explained in above paragraphs. Rim should be trued to within 1/32 in. sideways runout.

After rim has been centered sideways with wheel hub and runs true sideways, check it for concentricity. Adjust truing stand gauge to rim tire bead seat as shown in Fig. 2C-8. If rim runs eccentric (radial runout), nipples must be loosened at points rim does not contact gauge, and nipples tightened at points rim contacts gauge. Amount nipples are to be loosened or tightened is determined by the amount rim is out of round. Rim should be trued to 1/32 in. or less radial runout.

5. After above operations have been checked and corrected, start at valve hole and tighten nipples one turn at a time all the way around rim until spokes are normally tight. While tightening nipples, repeatedly check rim with gauge according to instructions in step 4.

After all nipples have been pulled up until spokes are normally tight and wheel is true, or nearly so, seat

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