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The photo looked straightforward even to me (I dismissed the pusher part)I have no seals on that D/S bearing or any other.There is a small gap at the teeth base/outer race ID that would allow oil to get to the bearing (eventually)Running an outer seal might save the box losing its oil should the GB case seal fail, it might even be a barrier should chain lube/grit go the other way somehow and give the bearing some protection.If the case oil seal and oil seal surface on the sleeve gear are fit for purpose it might be a moot point, the oil stays in, the bearings get oil.It seems it can be run with one, two or no seals, one , two or no shields and still last.
The photo looked straightforward even to me (I dismissed the pusher part)
I have no seals on that D/S bearing or any other.
There is a small gap at the teeth base/outer race ID that would allow oil to get to the bearing (eventually)
Running an outer seal might save the box losing its oil should the GB case seal fail, it might even be a barrier should chain lube/grit go the other way somehow and give the bearing some protection.
If the case oil seal and oil seal surface on the sleeve gear are fit for purpose it might be a moot point, the oil stays in, the bearings get oil.
It seems it can be run with one, two or no seals, one , two or no shields and still last.
