Ford F57Z-3A360-B Arm - Adjustment

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To remove and install the front suspension components, first raise the front of the vehicle and place jack stands under the frame, then position a jack under the axle. Disconnect the lower end of the shock absorber from the lower bracket by removing the bolt and nut. Next, remove the front spring by loosening the axle pivot bolt, then take off the spring lower seat from the radius arm, followed by removing the bolt and nut that attach the radius arm to the axle and front bracket. Remove the nut, rear washer, and insulator from the rear side of the radius arm rear bracket, and then take the radius arm out of the vehicle, also removing the inner insulator and retainer from the radius arm stud. For installation, position the front end of the radius arm to the axle, install the attaching bolt from underneath, and secure the nut finger tight. Place the retainer and inner insulator on the radius arm stud and insert it through the radius arm rear bracket. Install the rear washer, insulator, and nut on the arm stud at the rear side of the arm rear bracket, tightening the nut to 81-120 ft. lbs. Tighten the nut on the radius arm-to-axle bolt to 160-220 ft. lbs. Next, install the spring lower seat and spring insulator on the radius arm, ensuring the hole in the seat aligns with the arm-to-axle bolt, and then install the front spring. For vehicles from 1983-89, connect the lower end of the shock absorber to the lower bracket on the radius arm using the attaching bolt and nut, with the bolt head facing the tire, and tighten the nut to 48-68 ft. lbs. For 1990 vehicles, connect the lower end of the shock absorber to the stud on the radius arm with the retaining nut, torquing it to 40-63 ft. lbs.

To remove the spring assembly, first take out the spring lower seat from the radius arm on 2WD models, then remove the bolt and nut securing the radius arm to the front axle and front bracket while supporting the vehicle on jackstands and using a floor jack to raise and lower the front axle. For 4WD models, remove the spring lower seat and stud, followed by the bolts securing the radius arm to the front axle bracket. Next, from the rear side of the radius arm bracket, remove the nut, rear washer, shield (on the passenger side only), and insulator, then take out the radius arm along with the inner insulator and retainer from the threaded end. For installation, place the front-end of the radius arm onto the front axle, and on 2WD models, install the attaching bolt and a new nut from underneath the axle, tightening the nut only finger tight at this stage. For 4WD models, position the front-end of the radius arm onto the bracket and axle, then install the bolts and stud (with a washer on the left axle only) in the bracket, also tightening them only finger tight. Next, install the rear retainer and insulator onto the threaded end of the radius arm, then insert the radius arm into the rear bracket and attach the rear insulator, washer, and new nut, tightening the nut to the specified torque. Finally, tighten the bolts and nuts installed earlier to the specified torque, install the spring lower seat onto the radius arm for 2WD models or the spring lower seat and insulator onto the left radius arm for 4WD models, and then install the spring assembly. It is recommended to have the front-end alignment checked by a dealer service department or an alignment shop.

From underneath the axle, install the attaching bolt and a new nut. Tighten the nut only finger tight at this time.

Tighten the lower bolt and washer to 190-230 ft. lbs.