Trail-Gear Knuckle Pull Scale
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A pull scale is helpful in setting up the shims on a knuckle. By increasing the shims above and below the knuckle the knuckle becomes tighter. When installing new knuckle bearings we recommend checking the shims with a pull scale. Attach the pull scale on the steering arm with the tie rod / drag link removed and the felt on the back side of the knuckle not yet installed. The knuckle should not move until about 15 lbs of force is applied to the steering arm.