OEM Mercury Montego Coil Springs

Mercury Montego Coil Springs Parts and Q&A

• Coil Spring, Rear
  7G1Z-5560-B
  Q: How to Service the Rear Coil Springs and Shock Absorber Assembly on an AWD on Mercury Montego?

  A:

  Service of the rear Shock Absorber and spring assembly in AWD vehicles starts with measuring hub center to fender lip distance at vehicle ground level. The interior trim needs removing for access to the upper shock absorber nut before discarding it to take off the wheel and tire assembly. When you handle the rear Brake Caliper maintain support under it to avoid hanging it from the flexible hose; then unscrew the guide-pin bolts before setting the caliper to the side while tightening it to 31 Nm (23 ft. lbs.) when reinstalling. Install a V-topped transmission jack underneath the wheel knuckle to its Trailing Arm attachment point and rise the jack until it compresses the shock absorber and spring. Before using the transmission jack, you should remove first the trailing arm-to-knuckle bolt then loosen trailing arm-to-subframe bolt before removing the lower arm-to-knuckle bolt. Discard the lower shock absorber and spring assembly-to-knuckle bolt by first pushing the assembly off the lower arm before removing it. You should start by taping the spring to the upper rubber spring seat before inserting a 76 mm (3 inch) rubber hose piece on the upper shock absorber stud and finally installing the spring and upper rubber seat combination on the shock absorber. Fasten the shock absorber combined with springs to the lower arm by using a new bolt and set torque to 142 Nm (105 ft. lbs.). Make use of the transmission jack to elevate the lower arm as an assistant guides the upper shock absorber stud into the bushing so you can install a new lower arm-to-knuckle bolt loosely. Commercial Automotive Tricks 2020 suggests to raise the jack until the wheel hub matches correct curb height before tightening both lower arm-to-knuckle bolts to 90 Nm (66 ft. lbs.). Begin by placing the jack under the trailing arm connection point then raise it to install a new trail arm-to-knuckle bolt, follow that by tightening it to 105 Nm (77 ft. lbs.) then move to tighten the trailing arm-to-subframe bolt to 110 Nm (81 ft. lbs.). Reinstall the brake caliper along with guide pin bolts at 31 Nm (23 ft. lbs.) before taking out the rubber hose to install a new shock absorber nut tightened to 83 Nm (61 ft. lbs.). The last step involves running the transmission jack off the vehicle completely before adding the wheel and tire assembly. When the vehicle is at floor level, install the shock absorber nut that should be tightened to 83 Nm (61 ft. lbs.) before reinstallation of interior trim components.