Gearbox Rebuild - Bearing Fit

[brackenfel]

Sorry to be monopolising the Forum a bit at present but at least it proves I'm working on the A10!!

I'm re-assembling the gearbox but the "small gearbox bearing 67-4217" is proving troublesome in that the mainshaft will not slide through it. I have 2 mainshafts (one spare) & both have the same problem so it's not the shaft. I'm not sure whether the manufacturing tolerance an issue here but the bearing came from a good supplier (C&D Autos). I can get the shaft about 1/4" in either side by hand & "waggling" but that's it.

I'm faced with the choice of either drifting the shaft through the bearing in the inner case and then fitting the whole thing as a unit into the gearbox body or fitting the shaft & forcing the inner casing on - neither very appealing..

Do I need to just be brutal & get on with it? Has anyone else had similar problems or have I got a duff bearing?

Thanks,

Adrian

[A10Boy]

If its only tight by a micron or two, [small], stick the shaft in her freezer for a couple of hours then push into the bearing. the case can be warmed in her oven so the bearing goes in more easily.. It makes all the difference.

[alanp]

Just a personal preference for me is a snug (good old fashioned expression) fit rather than a tight interference. This helps assembling the gears, shafts and selectors before fitting the end cover with a touch of gentle rubber mallet persuasion on the cover while holding the selector in the correct position with the dots in line. A very light rub with a fine emery cloth will do the trick, measuring the shaft diameter so that you don't overdo it, we don't want a lose fit.
Alan

[muskrat]

G'day Adrian,
                     both mine are a snug fit, and as Alan said, a bit of gentle persuasion with a hide mallet to get the cover home and slide hammer over the nut to draw the shaft home.
Cheers

[brackenfel]

Many thanks all..

I now know which way to go & will try the freezer approach as I can't find my emery cloth at present!! Now where did I put those gaskets..

Cheers,
Adrian