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September 29th, 2008

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Q & A: Rear Extension

Friday March 29th, 2002
Q & A, MGA, MGB, MGC, MG T-Type, Midget
John,
Here a question from the Netherlands. I am rebuilding a 3 sync mgb gearbox. Cleaned the parts, changed all the bearings and the 3 and 4th synchro rings. I fitted the rear extension simply by refitting the rear flange and nut. Here comes the problem. After tighten the rear flange nut there is still 0.5- 1 mm distance bewteen the gearbox rearface and the rear extension. After tighten the nuts which holds the rear extension and maincasing of the gearbox there is my opinon much strain on the bearings on the third motion shaft. Is this normal. Has is something to do with the position of the bearing in the rear extension.

Thanks in advance,


Peter Brokke

Peter! The rear extension fixes the center bearing, tightly, so that there can be neither fore nor aft movement. When I assemble a gearbox, I tighten the rear extension to maincase bolts BEFORE I fix the rear flange -- but it really makes... read more