if you mean steering ball jounts its pretty easy. remove cotter pin that is through castellated nut connecting ball joint to steering arm, remove nut, then using ball joint separator tool you will buy at the auto parts store ( trust me you will want it ) force it between the ball and the steering arm, then hit it with a hammer until they separate. loosen the jam nut on the linkage side and unscrew the ball joint from the arm. install is reverse. dont worry too much about how tight the castlenated nut is when you install the new one firmly snug is fine as long as the entire hole for the cotter pin is inside of the slots in the nut. get the ball joint screwed in as closely to where the old one was as you can but you may still need to do some alignment when you are finished, and secure the jam nut.
picklefork tool. sometimes the complete tie rod has to be replaced
you need a inner tie rod tool
Most original are sealed - most replacements have a grease fitting
you most likely have worn tie rod ends or inner tie rod bushings that need replacing.
go for an alignement
Grease fittings are located at upper and lower ball joints, outer tie rod ends, inner tie rod ends, pitman arm and both ends of idler arm.
None. There should be no play. If there is the tie rod end is worn.
It will move away
Melting an iron rod is a physical change
Rear wheel drive, tie rod ends, pitman arm, gear box itself. Front wheel drive, tie rod ends or the rack and pinion.
To replace the inner tie rod ends on a 2004 Chevy Aveo, first, safely lift and support the vehicle, then remove the front wheels. Disconnect the outer tie rod ends from the steering knuckle and remove the boot to access the inner tie rod. Use a tie rod end tool to unscrew the inner tie rod from the steering rack, then install the new inner tie rod by reversing the process. Finally, reattach the outer tie rod and wheels, and perform a wheel alignment to ensure proper handling.
Find out where the wear is in the steering linkage. Idler arm and tie rod ends most likely.