1.37 x 24 is indeed the threading RH , Drive side cup and the frame is left Hand threaded .

You May find a Shimano UN Type cartridge BB .. the longest spindle offered is 127.5mm.

Measure the Spindle length and compare .. they are about $20 ..





With heavy Grease* The Bearing Balls will stick in the grease long enough to assemble the existing Assembly

No reason to re use old bearings they will not cost Much for new ones .
* auto hub grease .. that for boat trailer hubs is better water resistant..




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