A10 rear hub rebuild

[topher]

1950 A10 plunger. The rear brake drum chainwheel bearing has a shim on the drive side, 67-6072 in the diagram. I've been sent one which is supposedly the right one, according to a couple of sources anyway. It's quite different from the original but I was told it will be held in place by the spindle. Is that correct, did they start making them smaller? It just don't seem right!

[Gup holland]

The new shim looks like , for a A65, been busy on a 1970 Qd rear wheel last weekend,  maybe?.

[DAVE BRADY]

Hi,

The shim/dustcover is held in against the bearing by the cir-clip.  It rotates with the brake drum so is not trapped by the spindle which obviously does not rotate.

Dave.

[topher]

Thanks, yes that was my thinking. To be honest it's not the first time I've had the wrong part sent under the right part number. I guess it happens.

[JulianS]

Perhaps you were supplied with the rigid frame part 67 6033?

Below from the 1951/52 parts book.

[topher]

Yes quite possibly. Definitely different to the one used on the plungers.

[topher]

Another question - would a modern sealed bearing obviate the need for the shim? Although there would be a slight gap between the outer bearing race and the retaining circlip, this could potentially be taken up with a suitable flat type shim?

[DAVE BRADY]

Hi,

I always use sealed bearings in wheels.  I have reused the standard shim but if it was too battered I do not see why a washer of the same thickness  would not be suitable.

Dave.

[topher]

Thanks, sounds good to me.