This is a big job and you can cause your driveshaft to vibrate if you don't do it corretly. I suggest taking it to a garage.
To allow for suspension and steering movement.
Doing it yourself- About 50 bucks. Taking it somewhere it depends where you go- Alot
Changing the angle of the drive shaft when lifting the vehicle's suspension puts excess stress on the universal joints, expect premature wear or breakage to occur.
Dry ball joints/suspension joints. Universal joints going bad. Worn brake pad "squealers".
Universal joints are usually found on each end of a drive shaft between the transmission and the rear differential and/or front differential to allow compensation from the up and down movement from the suspension.
Check for worn universal joints, they will make things shaky
Ball joints are in the front suspension, it is basically what the wheel assembly pivots on when you turn. Universal joints are on the ends of the drive shaft in a rear wheel drive vehicle. At the transmission and rear end. They give the drive line some flexibility. The same principal is in front wheel drive but are referred to as constant velocity joints, or CV joints.
The factory u-joints on an expedition are non greaseable.....I had to replace mine with universal greaseable u-joints.
It has CV joints which are similar to Universal Joints.
This depends on upper or lower ball joints. If you need to replace the upper ball joints, you must replace the upper control arm. For the lowers, you will need a ball joint press, and some snap ring pliers. Be careful with the spring when taking the spindle apart from the control arms. (spring type suspension) Have to unload the torsion bar (Torsion Bar suspension) You will need a special tool to do this
This depends on upper or lower ball joints. If you need to replace the upper ball joints, you must replace the upper control arm. For the lowers, you will need a ball joint press, and some snap ring pliers. Be careful with the spring when taking the spindle apart from the control arms. (spring type suspension) Have to unload the torsion bar (Torsion Bar suspension) You will need a special tool to do this
Motor mounts transmission Universal joints Differential CV joints Springs Struts