super a seals

Mark W. · Feb 24, 2009

Does each side of the bull pinion require two seals? The new ones are much thinner than original. Also, how big of a pain is it to change the axle bearings on these? Thanks

ScottyHOMeY · Feb 24, 2009

If you're talking about the actual pinion in the final drive (and I suspect you are), you should only need the seals on the inside. On the outside, the gasket under the cap keeps things sealed up.

As far as the axle bearings (the bearings carrying the bull gear on the actual axle with the hub the wheels mount to) that's a real straightforward job. It may require double seals on the outside, as well, but my memory is foggy as to whether that will work and still leave space for the felt dust washer). In any event, you'll only need the seal(s) for the outside as the the gasket and cover will take care of the inside on that one, too. Thinking back to a thred from a week or two ago, the only caution I'd offer on the axle shaft is to keep close track of how things come apart -- the bull gear is offset in the center and there's a spacer and washer on the shaft that need to get back in the right place so that the bull gear meshes up with the pinion. Put everything back in the same order and direction and you'll be fine.

Zach Bouchard · Feb 24, 2009

I just went to the dealer and bought all the trans seals for my B, and I think the trans is the same. It has three total. One on each side and one in the front. I took out the originals and there was only one on each side.

ScottyHOMeY · Feb 24, 2009

about doubling up the seals.

I touched on it in answering about the axle seal, but, yes, the shells on the newer seals are not as thick as on the old rawhide variety, and it is common to drive two of them in to replace of the old. This can, but might not necessarily have the advantage of putting your seals on a a new surface that hasn't been worn down by grit on the old seal. If so, great! If it continues to leak, you might need to look into disassembling and putting a speedi-sleeve on the shaft.

P and R Pete · Feb 24, 2009

Leads to another question, if I may.
I've heard an opinion that a seal away from the oil in a doubled-pair will wear out quickly with no oil to 'lube' it like the inner seal, though it makes good sense that two is twice as better as one.
Would appreciate your thoughts!

ScottyHOMeY · Feb 24, 2009

Good question. A lot of folks recommend packing grease between the two seals. Never gave much thought to it, but maybe that's the reason.

wendle · Feb 24, 2009

Make sure you use a good quality grease like wheel bearing grease between the seals, as this is not likely to harden. Also will keep outer seal soft, new type seals will deteroate if not lubed on one side.

Haas · Feb 25, 2009

No need to double up on the seals. The new thinner replacement seals are vastly better than the old leather seals were. If the shaft is in good condition, one of the new seals will be more than adequate to replace the old thick seal. The money for the second seal is better spent on a repair sleeve for the shaft surface or having the shaft resurfaced.

super a seals

Mark W.

Member

ScottyHOMeY

Well-known Member

Zach Bouchard

Member

ScottyHOMeY

Well-known Member

P and R Pete

Member

ScottyHOMeY

Well-known Member

wendle

New User

Haas

Well-known Member

Similar threads