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i'm replacing my ball bearing type with a set of taper rollers. when i torque it up the hub locks up.
there seems to be a gap of about 2mm between the built in spacers of the inner races.
the outer tracks seated nicely on the ridge so i'm not sure what the problem is.
could it be that they are non genuine bearigs?

I wouldn't call it a common occurance, but I find the same issue in about one in three rear wheel bearing installations of those with the built-in spacers. I have had to add shims between the "spacers". I haven't had one as bad as a 2 mm gap, however.

Does the taper parts for the bearing seat well home in the hub? Perhaps give the inside of a hub a good clean before with emery cloth to get rid off a build up of old dried out grease. That could be the problem. Or even a nick in the metalwork stopping it seated where it should.

which way round does the oil seal go?
i googled the subject and there seem to be conflicting ideas.

There is an issue about the rear wheel bearing inner seal assembly, latest manual advise fit it the reverse way, some don't , but new trial arm had fitted an oil ring to stop water going in! Where most of our old Minis did not have it!
I also need help in this issue!


Al

The seal reverse fitting came from occasional front wheel bearing failure on works rally Ford Escorts in the 70s. The hub would run hot from the brakes, then drive through a water splash and cool the hub. The hot air in the hub would contract and suck the water into the hub. This would then cause bearing failure. So they reversed the seal so that although a bit of grease escaped from the wrongly fitted lip, it stopped the water getting in which was the larger problem.

This is an unlikely scenario to happen inside a mini rear drum hub and you certainly wouldn't want the grease leakage inside the hub.

The most famous wheel bearing failure was iirc, the 1976 RAC on Roger Clark's car between the finish of the last stage and the finish of the rally. Fortunately the car was being escorted( a suitable phrase) by a works service vehicles front and rear.

thanks, that's very interesting. so, just fit them the normal way round?

ivor badger wrote:The seal reverse fitting came from occasional front wheel bearing failure on works rally Ford Escorts in the 70s. The hub would run hot from the brakes, then drive through a water splash and cool the hub. The hot air in the hub would contract and suck the water into the hub. This would then cause bearing failure. So they reversed the seal so that although a bit of grease escaped from the wrongly fitted lip, it stopped the water getting in which was the larger problem.

This is an unlikely scenario to happen inside a mini rear drum hub and you certainly wouldn't want the grease leakage inside the hub.

The most famous wheel bearing failure was iirc, the 1976 RAC on Roger Clark's car between the finish of the last stage and the finish of the rally. Fortunately the car was being escorted( a suitable phrase) by a works service vehicles front and rear.

Why not just fit a double lip seal (the best of both worlds)>>> Seal

A double lipped seal would work OK if the hub is vented. If not, the seals can blow out. I usually fit grease filled hub seals with the lip out and this is no new practice, been around for years and not just on Mini's.

Regards
Al

Ronnie wrote:Why not just fit a double lip seal (the best of both worlds)>>> Seal

Ask Mick bleep bleep Jones, it was probably his idea.

madaboutcherry wrote:which way round does the oil seal go?
i googled the subject and there seem to be conflicting ideas.

These pictures may be of some help! These are out of the correct age W/S manual (if you are into period detail)