Hello there - the springtime promises are starting to come true!!! (little Pentangle reference there )

rear tyres are at correct pressures of 29 and it's only on the NS tyre, got about 15 or 20mm wear on the outer edge of the tyre.

I suspect a bearing is going but any other suggestions?

I know you need a special tool but is a rear bearing quite easy?

Thanks alot
Will

If you have checked the bearings and they are OK then you could well have a bent or damaged arm. Not the easiest thing to check at home though.

If its on your Ami they are different to those on a 2CV.

It is more likely to be the swing arm bearing. Look at the car from behind, look for negative camber. Can be hard to spot, if you can't, lift the wheel off the road and feel for play. Well the rim could be buggered too.

Will,
if the tyre is wearing on its outside edge, that would be the result of too much toe in on the rear arm.

Easy enough to check, especially considering that Haynes use a line drawing of an Ami in their illustration of how to check the front wheel alignment.
See Fig 7.17, chapter 7.

However, they fail to note that the rear track on an Ami is 40 mm narrower than the front track, so you need to space the string lines 20mm off the wheel centre at the rear.

Once you've set that up, the measurement to the front edge of the rear wheel rim should not be more then 2mm larger than that at the rear edge, although ideally it should be the same...

ken.

Griff, Viking & Ken

Thanks alot chaps, I shall jack her up and have a look, will report back.

Will

Arm or wheel?

Nothing special needed, the big castelated ring nut can be punched with a drift to free it and when its moves a few mm the tension is off and can often be undone by hand re fit using similar brute force and ignorance. getting the bearing out the arm is just a case of drifting it out little by little, getting the race off the cross member is a little more difficult but again little by little with a softish drift/punch.

the rear wheel needs either a retaining ring tool or just drill the old one out at the indents and split it with a chisel, you need a new ring with the bearing

Sean