Ford: Ball Joint Replacement, wheel spindle, cotter pin

Question
I was wanting to know how to replace the lower ball joint on a Ford 2002 E-350 van and if I should also go on ahead and replace the upper one sense I got it apart and do I need to use a ball joint press or can I just heat the lower arm to get it out like I've done on my 84 and 88 thunderbirds with no ill problems.
Thanks
Mike

Answer
Mike the first thing you don't want to do is heat anything up you will lose the temper in the metal and the weardest noises will accure.if there is nothing wrong with the upper then no  it is not nessery.Removal
Remove the brake disc. Remove the wheel speed sensor. For additional information, refer to Section 206-09.
Remove and discard the cotter pin and nut.

, disconnect the tie-rod end.

Remove and discard the cotter pin and the nut.

Remove the pinch bolt adjuster.

CAUTION: To prevent damage to the ball joint seal and the ball joint socket, do not use a pickle fork-type remover to loosen the ball joints.

Remove the front wheel spindle.
Strike the lower end of the front axle to loosen the ball joint.
Remove the front wheel spindle.

To install, reverse the removal procedure.
Check and, if necessary, align the front end.
Remove the wheel spindle assembly. For additional information, refer to Wheel Spindle — E150-E450 in this section.
Position the front wheel spindle in a vise, and remove the snap ring from the lower ball joint.

CAUTION: To avoid damage to the components, do not use heat to aid ball joint removal.

Using the special tool and suitable receiver cup, remove the lower ball joint from the front wheel spindle.

Using the special tool and suitable receiver cup, remove the upper ball joint.

Installation

CAUTION: To avoid damage to components, do not use heat to aid installation.

NOTE: Clean the wheel knuckle ball joint bores.

NOTE: The lower ball joint must be installed first.

Using the special tool with suitable receiver cups, install the lower ball joint.

Using the special tool with suitable receiver cups, install the upper ball joint.

Install the snap ring in the groove at the bottom of the ball joint.

Install the front wheel spindle.