Q: How do you remove the rear axle assembly on Mercury Grand Marquis?
A: To remove the rear axle assembly, disconnect the battery cable, loosen lug nuts, raise the vehicle, remove wheels, brake components, and axle cover. Disconnect ABS sensors, axleshafts, brake lines, and backing plates. Unbolt driveshaft, raise axle, disconnect safety chain or air springs, remove shock absorbers and suspension arm bolts. Disconnect axle-locating arms, Watts-linkage assembly, and height sensor if applicable. Lower axle housing, remove coil springs or air springs. Lower suspension arm bolts, remove axle housing. For installation, raise axle, secure with suspension arm bolts, install springs, connect lower suspension arms. Raise axle to normal height, tighten suspension arm bolts, reattach height sensor if applicable. Connect shock absorbers, driveshaft, and backing plates. Reconnect sensor wires, brake lines, and parking brake cables. Install axleshafts, brake components, axle cover, and fill differential. Install wheels, lower vehicle, and tighten lug nuts.