Good idea, and at least then I'll have a spare one that I can experiment withPete, from an engineering perspective it would seem unlikely that a bearing is a one way placement within a housing - if it is pressed in it can be got out again but there appears to be quite a few 156`s being dismantled and although you would have to do your research regarding whether there is any difference between the V6 and the 2 litre TS parts a second hand item may well be a cheap easy solution enabling you to stretch those dollars.
Yeah there is no movement.Best is what you probably have already done - jack up the wheel, spin it first to check smoothness and noise then grab wheel at 12 and six o clock positions and see if there is any movement.
Brings back memories. We used amsoil in our transaxle gearboxes for years. Not only improved them but made the synchro actually last.Noise carries unfortunately and can be difficult by just listening to identify where it is actually coming from, although in theory with a front wheel drive car it should be easier. Thats why the lift the wheels off the ground method and check for smoothness and excess movement ultimately is best. There is a support bearing for the rh driveshaft which could be the culprit as it is exposed more than the other bearings in the drive chain and instinct suggests this as maybe the culprit. Regarding gearbox bearing noise best thing to do is change the oil first. Acquire some Amsoil gear oil (available here in New Zealand) and fill the transaxle. I have tried everything else except Redline (not available in NZ) and NOTHING works as well. When I had my workshop it fixed cars I would not have thought possible - local car dealers loved it. It quietened a slight bearing noise in our own Lancia Flavia transaxle, and a very very noisy and almost no second gear synchromesh gearbox in our GT Junior. The Junior gearbox was exceptionally bad and the Amsoil synthetic was put in as an experiment with low expectations so it is worth a try.
I routinely put it in all our cars (12) and without exception the gearboxes are quieter, the synchromesh (if fitted) works perfectly and of course you have superior protection.
Now that is very interesting!!!!Once I had what seemed to be a wheel bearing problem. It was a tire/tyre problem. Odd that a tire going bad could be so convincing that it was a bearing.