Three bolts attach the backing plate to the spindle and steering arm. Two are below the spindle shaft and hold the steering arm in place, and the third holds the wheel cylinder in place. The third bolt was particularly stubbornwe couldnt budge it, even with an extra-long box-end wrench. Marlan volunteered his manly 18-inch breaker bar for the task, but our lazy selves prefer power tools. Marlans high-torque impact wrench made very short work of the offending bolt without snapping our wrists clean off.