Front End Wobble

hi
First all joints in front end must be in good condition .At 400 thou even some of the Toyota parts fail . If they have seen lots of work they would have been replaced anyways .
Check springs and hangers etc etc
Check tyre for out of round or bad tyre wear

Swivel hub bearings [kingpin] have a huge influence on quality of driving
A few points to be aware of
check for play first in hubs
if ok check wheel align write down info
Install wheel/align bearing kit
U donot have to install the W/A bearing set unless w/a specs are way out

main things that u have to do is install bearings with************************* 3-6 kgs of drag guage ******************
Set axle height with Guenuine type tools
Replace/ check when removed shocks and str damper if fitted

swampy

Had a similar problem turn out to be the tyres out of round,Kumo only worn out .

Thanks for the solutions, I've opted to get it assessed, in the first instance. In conversation with the guys that I rang and booked, the first comment that they made when I described the issues was that I needed castor correction bushes, maybe he meant wedges, can't remeber seeing any radius arms or coils last time I looked.

I have only limited mechanical skills, can do basic stuff but some of this is out of my league hence taking in account some of the comments, at least I'll be better informed and when I get the results see if there are valid or not

Have done it for monday

Thanks Guys

The biggest single cause of front wheel shimmy is when the majority of the front end steering components simply get well-worn.
Swampy has it all sorted.

Wide wheels and oversize tyres with slight out-of-balance problems exacerbate the wear and sloppiness in ball joint and kingpin bearings/bushes, and steering damper - and the result is front wheel shimmy.

The front end components such as ball joints, kingpins, steering damper and even the steering box, all need to have a degree of tightness (preload, in the case of the bearings) - and this general tightness and drag, is part of what keeps the front wheels from shimmying.

The other factor involved, is the front end design that is engineered so that the rotating wobble in the wheels doesn't overcome the steering effort needed to keep the wheels steady.
This is done by ensuring the steering arms and Pitman arm have the correct length and leverage ability to be able to keep control of wheel wobble.

Jeep Wranglers have a major problem with front wheel shimmy, because their front-end engineering is poor, and the steering arms don't have enough length to be able to control wheel shimmy.
In addition, most Jeep steering components are very lightweight. It's made worse by most Wrangler owners fitting oversize tyres.
As the tyre width and diameter increases, the leverage of any slight wheel imbalance over the steering components is increased, leading to a higher chance of front wheel shimmy.

Cheers, Ron.

Cheers, thanks for the info, at least now I am better informed then I was before I posted.

I'll post what the results will be after monday

What Mike39 said first, then start on the other suggestions!

Bob