Ball joints

Not exactly model engineering but someone might be able to help.
I needed to separate a ball joint on my VW passat (as a precursor to
replacing the front wheel bearing). Standard ball joint separator tools
don't fit (it's a large ball joint and VW make a tool 3287A).
This looked like a good milling exercise so after an hour or so I had
scaled up version of a standard scissors type ball joint separator.
After trying to use it I successfully bent the 16mm x 19mm section which
I used as one leg of the scissors, but did not succeed in moving the joint.
Never having separated a ball joint before maybe I did not design
with a sufficient margin of strength?
Does anyone have any tips on ball joint removal?
Alan
Reply to
Alan Bain
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Put some pressure between the ball joint rod and the arm it's fastened to with a larger lever and keep weight on, then with the nut nearly off [ this is to protect the thread ] wack the side of the arm where the taper sits as hard as you can. Don't piss about with a toffee hammer use at least a 2 pound or 4 pound hammer and give it one. The ball joint will sprint out the taper.
John S.
Reply to
John S
Or better still spring out
Reply to
John S
Lump hammer resting against one side as an anvil, and 2 lbs ball peen tapping fimly usually springs the joint, failing that it's the old hot/cold cycling trick.
AWEM
Reply to
Andrew Mawson
My experience on Landrover ball joints is not to be shy! "Give it some welly" I broke a "proper" tool on the Defender!
I always take a sledgehammer along as well - not to use, but just to frighten the joint!
Cheers
Peter
Reply to
puffernutter
Hi Alan
I'd be reluctant to start heating it up as you may damage the rubber seal and I've found it can be impossible to get them separately.
It's worth having a look at the different types of tools available. The forked wedge type are effective and easy to use but destroy the rubber seal. The scissors type are quite good but I've sometimes found access difficult. As I recall one of the tricks with these is to screw it up tight and then whack the end of it.
Depending what shape the joint is it might be possible to get a puller type tool to act directly so the screw is on the end of the taper pin. I would have thought this might be easiest to lash up too. You can get ball joint separators that work like this but they're really only for small joints.
I have also done it once using two hammers as others suggest.
Best wishes
Russell
Reply to
Russell
Put some pressure between the ball joint rod and the arm it's fastened to with a larger lever and keep weight on, then with the nut nearly off [ this is to protect the thread ] wack the side of the arm where the taper sits as hard as you can. Don't piss about with a toffee hammer use at least a 2 pound or 4 pound hammer and give it one. The ball joint will sprint out the taper.
John S.
As John points out, you need to bash it hard, not on the end but on the side. It is the shock that releases the joint, not the amount of force or the direction it is applied. Be aware that the joint will spring out at high speed when it releases, so don't have any delicate bits of yourself in its path.
Cliff Coggin.
Reply to
Cliff Coggin
I use a ball joint splitter. Saves all the hitting (and missing and subsequent damage).
Like this:
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Any good DIY motoring shop should stock 'em.
Reply to
brightside S9
Forget that, I see you say a standard one won't fit. Must wait until fully woken up before I post!
Reply to
brightside S9
Alan Bain formuleerde op maandag :
Once been hammering all afternoon, even damaged a joint splitter tool. Then cut off the ball part with a hacksaw, drilled a hole through the taper, used "freeze spray" and the @#$% thing just fell out. Dirk
Reply to
Dirk
My way also,but I don`t tap with the 2lb hammer.
Mark.
Reply to
mark
Tap? Tap? Don't tap it boy, whack it as hard as you can.
(Apologies to John Cleese.)
Cliff Coggin.
Reply to
Cliff Coggin
We've got a Passat somewhere in the snow.
Price for a ball joint is under =A320 retail.
Do I need to give a sat nav ref to the local synagogue?
Really?
Norm
Reply to
ravensworth2674
message
Only modesty in my expression - tap was to be interpreted !
AWEM
Reply to
Andrew Mawson
That makes sense. I never thought of hitting the side of the arm. I'll give it a try as soon as the weather shows some signs of improving!
Alan
Reply to
Alan Bain
Put some pressure between the ball joint rod and the arm it's fastened to with a larger lever and keep weight on, then with the nut nearly off [ this is to protect the thread ] wack the side of the arm where the taper sits as hard as you can. Don't piss about with a toffee hammer use at least a 2 pound or 4 pound hammer and give it one. The ball joint will sprint out the taper.
John S.
As John points out, you need to bash it hard, not on the end but on the side. It is the shock that releases the joint, not the amount of force or the direction it is applied. Be aware that the joint will spring out at high speed when it releases, so don't have any delicate bits of yourself in its path.
Cliff Coggin.
For that reason I always leave the nut backed off a bit, but still on the threaded part. Over the years my sugar tongs (forked wedge) tools have served me well. A few strong sharp blows on the end, and the taper pops out with a bang!
Steve R.
Reply to
Steve
Like Andrew I've found that using a lump hammer as an anvil on the reverse side helps enormously but hitting with a hammer on just one side rarely works. It's nigh on impossible with some cars to ever use a splitter, and if you do then no matter how careful you are you can end up damaging the boot which you can't buy separately. Not a problem if it's the joint you wanted to replace, but if you are just removing the hub for access to something else like a wheel bearing or a CV boot then its a complete pain.
Reply to
The Other Mike
Thanks very much for all the suggestions and advice. I tried the two hammers technique and it worked beautifully. Ball joints separated in less than five minutes and no damage at all to the boots (which are of the type which cannot be repaced separately described above).
I wish I could say the same for ease of removal of the pinch bolt for the upper control arms (which needs to be fully withdrawn rather than just slackened before the arms will remove). I ended up removing the strut and mounting plate for the arms just to get the hub carrier out of the vehicle.
Alan
Reply to
Alan Bain
Oh rats! I've got an A6 whcih is the same can with a different badge and I know the top arm needs doing - 'detectable slack, taking your life in yer hands mate' - yeah right. Off to the MoT this afternoon having missed it in the snow last week so I guess I'll be crawling under it this week, oh the joy....
Richard
Reply to
Richard Shute
I've removed more taper joints than I can remember, all with either one or two hammers. If heat is needed, a kettle of boiling water is normally enough.
When reassembling, coat everything with Waxoyl. It stops things rusting/siezing together so the job's easier next time.
John
Reply to
John

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