Rosey Joints

[Sando]

Hi
any ideas on how to get the top rose joint off the extended front stub axle? (Hawk) is there a trick with a puller?

I've come to set up all the geometry and can't get one side off to adjust it. Tight as an extreeeemly tight thing it is. I got one side done but I had to heat the rose joint up quickly to expand the bearing and let the weight of the car push it up with an axle stand under the wishbone, much bashing with nylon headed hammer and jumping on the wheel too. It wasn't seized at all just EFFin tight on the shaft. Thank goodness they are good quality joints or it would have been buggered. Needless to say it went back on with some copper grease but is still tight. The other side is solid just can't budge it.
I've had to come in from the Garage and leave it for another day it's that bad!
All for a degree of negative camber !!

Any ideas ?
cheers

[stableblock]

Hi
Just warming the whole thing will probably help - most stainless steel expands more per degree than most normal steels so the rose joint inner should grow faster than the vertical link (assuming like mine that your top rose joint is a stainless one).

Try a fan heater or hair drier and see if you can get the whole lot up to say 50 deg C then try again. Its quite cold at the moment and this may have made the rose joint shrink onto the shart more.

Give a go and let us all know if it works.

[guy mayers]

Have you tried a gear puller? It will probably wreck the rubber boot but it will shift it!
Guy

[Sando]

Hiya
Yep, Stainless and I've tried warming...didn't budge
I tried warming abit more...didn't budge
I tried warming till spit boiled....didn't budge (the old Green to brown test):D
warmed it abit more until some oil boiled out of the whole in the top of the extension, put the nut back on and walloped it...........stilll didn't budge
Normally I agree this would unseize nearly anything. unfortunately this is in the 'nearly' bit.

Next step is a gear puller I suppose and the blowlamp again to ease it along.

The one good thing is it didn't bugger up the boot as it didn't have one!! :) - (yet) The nut will never walk again though!

Rob

[chris.richard]

Heat it hotter (more steam, McPhail!)

Hit it on the side to get it resonating elliptically.

(Says a non-engineer who's just had to bin a heater hose valve because his attempts at soldering on a pipe to it melted a sealing washer inside so it now imitates a garden sprinkler!!)

[roger001]

I had this problem a few years ago, hitting the top of the stub axle didnt work - the nut was scrap and I had to recover the thread on the stub axle with a die.
The only solution was to remove the stub axle and wishbone as one piece, then with the sub axle in a vice you can hit the underside of the wihbone near to the rose joint, with it being off the car there was acces to hit it this way, and it eventually came off.
However Guy's suggestion of a puller of some sort sounds easier and more "humane".

[Sando]

I forgot to say..........
The Gear puller worked a treat.

Cheers
Rob:cool:

[Sando]

...........and a year later the Joint is buggered from all the heating and bashing about.

Anyone know the size and thread to order a new one? :)
Anyone got one not tightened up or a spare that they can measure? :) Brent? Shaun?

I've a feeling it's an imperial 1/2 " bore with 5/8" thread but it's still on the car under it's boot so I haven't been able to check. Could well be metric, I don't know.

Thanks
Cheers
Rob :cool:

[Swamprat33]

sounds a bit like a bollox moment Rob.... :p

[colin artus]

Its a stainless high angle rose bearing .5 bore and a .625-18 RH thread (5/8). It was part no RCA8 but this may well have changed, possibly RMAD08 from a peek at a recent RESB catalogue. RESB were the supplier: www.resb.co.uk. NMB will make an alternative.

[shaun]

Mine are on the car without rubber boots, I've got all this fun still to come - the agricultural sledgehammer is lying in waiting. Driveshafts are my thing at the moment, greasy, dirty nasty little things aren't they.

[Sando]

Thanks Colin I thought that they might be 1/2 x 5/8.

Shaun, just go straght for a gear puller to get them off if you need to adjust them.......To say the amount of heat and bashing it got a year ago, it stood up quite well really. I think driving round the Alps like a looney hasn't helped much.....the play isn't that bad, but it needs doing.
Keep at it :)

Rob

[colin artus]

Its the pfte liner thats suffered.

Colin

[Sando]

....Yep dead right Colin. I originally thought they were bronze bushed when I gave it some heat. When I finally saw the PTFE bubble out I stopped!!!
I'ts still working fine but just annoying me on the small bumps, I really should have replaced it some time ago :o

Thanks again
Rob