Raise front of vehicle and place jack stands under frame, allowing control arms to hang free.
Disconnect shock absorber and stabilizer bar from lower control arm.
Install a suitable jack, place jack under cross shaft so cross shaft seats in grooves of jack.
Place a safety chain or strap through coil spring and lower control arm, then raise jack, relieving tension from coil spring.
Remove cross shaft to crossmember U-bolts, lower jack slowly and remove spring.
Reverse procedure to install.