Ford 8A8Z-5A649-B Arm Assy - Rear Suspension

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When working on upper trailing arms for 2009 and earlier models, it is advised to consult a qualified repair shop due to the complex procedure involving subframe removal and the use of special tools. For 2010 and later models, start by measuring the distance from the center of the wheel hub to the lip of the fender with the vehicle at rest. Then, loosen the wheel lug nuts, raise the vehicle, and support it securely on jackstands, blocking the front wheels. Remove the rear wheel and unbolt the parking brake cable brackets from the chassis. Support each rear knuckle with a floor jack and raise them slightly. Detach the upper arm from the rear knuckle and remove the rear upper arm-to-subframe bushing bolts. Also, detach the upper ends of the stabilizer bar links from the rear knuckles and unbolt the lower ends of the shock absorbers from the rear knuckles. Proceed to remove the subframe bracket bolts and forward mounting bolts, followed by the subframe rear mounting bolts. Slowly lower the subframe with the floor jacks to access and remove the upper arm mounting bolt. For replacing the rear bushing, remove the bolt and slide the bushing off the arm. During installation, ensure the new rear bushing is positioned correctly with the markings TOP OF PART facing upwards and ARM TO THIS SIDE arrow pointing inward. Tighten the bolt to the specified torque. Raise the subframe into place and tighten the subframe mounting bolts to the torque. Use the floor jacks to raise the steering knuckles to simulate normal ride height, as measured earlier, and tighten the upper control arm fasteners and the shock absorber lower mounting bolts to the specified torque values. Install the wheel and lug nuts, lower the vehicle, and tighten the nuts to the torque specified. For lower trailing arms on 2009 and earlier models, start by measuring the distance from the center of the rear wheel hub to the fender lip with the vehicle on level ground, under its own weight. Then, loosen the wheel lug nuts, raise the vehicle, and support it securely on jackstands, blocking the front wheels. Remove the rear wheel and proceed to remove the trailing arm-to-rear knuckle bolt and loosen the trailing arm to subframe bolt. Carefully remove the ABS wheel speed sensor harness from the toe link and mark the relationship of the cam on the toe link nut to the arm before loosening the nut. Remove the toe link-to-rear knuckle nut and bolt. If it's a front-wheel drive model, remove the four stabilizer bar bracket bolts. Support the lower arm with a floor jack placed underneath the spring pocket and remove the lower arm-to-rear knuckle bolt and the shock absorber lower bolt. Slowly lower the floor jack until the coil spring is no longer under compression and then remove the shock absorber and coil spring. Continue by removing the lower arm-to-subframe bolt and detaching the lower arm. For installation, tighten the fasteners to the specified torque values but only after raising the outer end of the lower arm with a floor jack to simulate normal ride height as recorded earlier. Install the wheel and lug nuts, lower the vehicle, and tighten the nuts to the torque specified. For trailing arms, measure the distance between the center of the wheel hub and fender lip with the vehicle on level ground and under its own weight. Loosen the wheel lug nuts, raise the vehicle, and support it securely on jackstands, blocking the front wheels. Remove the rear wheel and support the lower arm with a floor jack, raising the jack until the distance between the center of the hub and the lip of the fender matches the measurement taken earlier. Remove the trailing arm-to-knuckle bolt and the trailing arm-to-subframe bolt, and then remove the arm. Installation is the reverse of the removal procedure, tightening the fasteners to the torque specified and then lowering the floor jack supporting the lower arm. Install the wheel and lug nuts, lower the vehicle, and tighten the nuts to the specified torque. Finally, have the wheel alignment checked and adjusted if necessary. Also, for toe links, measure the distance between the center of the wheel hub and fender lip with the vehicle on level ground and under its own weight. Loosen the wheel lug nuts, raise the vehicle, and support it securely on jackstands, blocking the front wheels. Remove the rear wheel and support the lower arm with a floor jack, raising the jack until the distance between the center of the hub and the lip of the fender matches the measurement taken earlier. Remove the toe link-to-steering knuckle nut and bolt, as well as the toe link-to-subframe nut and bolt. On 2013 and later models, if the link ball joint sticks in the knuckle, force it out with a two-jaw puller or ball joint separator. Installation is the reverse of the removal procedure, tightening the fasteners to the torque specified and then lowering the floor jack supporting the lower arm. Install the wheel and lug nuts, lower the vehicle, and tighten the nuts to the torque specified. Finally, have the wheel alignment checked and adjusted if necessary.