Second time failure of g/box maindrive gear ballbearing on Harley Davidson 2006 roadking 5 speed gearbox. second failure after 3000km on new bearings. Bearing started to rumble and were removed and inspected. found that they were starting to go through harding already. Genuine harley *** bearing and running harley mineral gearbox oil at correct level.Case was heated and bearings dropped in, not punched. Pulley nut etc, had maintained correct torque and not come loose. Hope there is a logical answer to this
Have you checked that the engine filter and all oil ways are clean & clear .Dirt and blockages can cause the bearings to not get enough oil .?
As with any mass produced product it is almost inevitable that you will get som duds however the most important thing to remember withany bearing instalation isa to kep them perfectly square to the mating surfaces wich from you description of ther instalation you have done heating the cases & dropping the bearings in is the prefered method all said & done it would appear that you have unfortunately got a dud from past experience with harley they wont warranty their parts unless they were installed by a dealership your cheapest replacement alternative is to remove the offending bearing take it to a bearing supply company & have them match it up for regards geoff
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