Radius arm problem

[Charlynsane]

Hello Guys,

I'm restoring my new project a 66 cooper

I had some troubles today with the rear arms, the thread of the stub axles are dead

How can I replace the stub axle?

An hydraulic press? Have I to remove the arm, or I can do it on the car with a good hammer?

Thank you

Charles

[mk1]

They press out without too much difficulty. I would not suggest hammering them out.

[Charlynsane]

I tried with a hammer, just impossible,

moreover the circlip is stuck..

impossible to get it out..

A long way, but what a pleasure!

[mk1]

I think you are becoming good at solving these impossible problems

[ivor badger 2]

I tried with a hammer, just impossible,

moreover the circlip is stuck..

impossible to get it out..

A long way, but what a pleasure!

Put it in the press
Press the axle into the arm about 10mm
Chisel off the circlip and clean up the area around it with a file
Then push it out
You will need to modify the new axle pin in a lathe to convert the shocker pin bit to fit the hydro spring.

[smithyrc30]

I just did this on my hydro arms.

As described above I pushed the ones in my arms out on my press in the garage. It registered about 4 tonnes to move them but as soon as the pins were moving it dropped to about 1/2 a tonne.

I took the circlip off with a pair of normal circlip pliers.

The new pins went in at just under a tonne, until they hit the circlip.

Not possible with a hammer I would say but very simple with a press and a normal pair of external circlip pliers.

To get the circlip off you have to press the pin inwards (toward the centre of the car). About 5mm is enough to expose the clip, then you can use the circlip pliers to remove the clip from the pin and then you push the pin out to the wheel side of the arm. I do it this way because I read somewhere that it dramatically decreases the risk of galling if you always push the parts in the same direction. Can't for the life of me remember where though

After a good clean up of the arm I put the new pin back in the other way. put the clip on the new pin first and push it through until the clip bottoms out in the machined recess in the arm. Just remember they are handed left and right.

[Charlynsane]

Hello Guys,

I finally ordered a new radius arm pair "Dry"

There are some little upgrade to do but it seems to be easy,

It's cheaper thant restore it, because I don't have press