Inspection, Service & Maintenance 10.2.1.18 Ridewell Axle Alignment The RAR-260 suspension is equipped with the Speed Set® alignment feature for simple, manual alignment of the axles. Depending on the suspension model, slots are provided in either the hanger sidewalls or bushing assemblies (see Figure 1a) which allow 0.5” of adjustment at each pivot connection. 1. Prior to alignment, position the suspension beams so that the pivot bolts are centered in the alignment slots. See Figure 1a. 2. Align the forward axle to the center of the kingpin to within ± 1/8”. 170 See Figure 2. 3. Alignment procedure: a. Loosen the pivot nut. b. Move beam in the direction of desired axle movement. Use a 1/2’’ shank breaker bar inserted into the square hole in the adjuster plate. See Figure 1b. Ensure that both inboard alignment washer and outboard adjuster plate have moved in unison. It is important that the bushing is not skewed in the hanger prior to tightening. c. Snug the pivot fasteners and re-check alignment measurements. Adjust if necessary. d. Torque the pivot bolt using a 1” drive impact wrench and #6100054 E-20 Torx socket (or equivalent) until the Torx head shears off from the bolt. Note: Torque the pivot bolt with the suspension at ride height to prevent prestressing the rubber pivot bushing. Note: It is imperative that the pivot fasteners be properly torqued prior to placing the trailer into service. Failure to torque the pivot fasteners will lead to slippage of the pivot joint, causing rapid wear of the components and ultimately leading to catastrophic failure of the suspension. Warranty coverage of the suspension is void if the pivot fasteners are not properly torqued. e. Welding alignment washers to the hanger sidewalls of hanger mount suspensions is not required or recommended. 4. Align the aft axle(s) to the forward axle to within ± 1/16” using the same procedure. See Figure 2. 4. In general, small alignment changes can be made on one side (left beam or right beam). It is preferable that large alignment changes be made by splitting the difference from one side to the other (i.e. 1/2 the difference forward at one beam, 1/2 the difference aft at the other beam).
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