Refurbishing Rev-Counter Drive Gearbox (ATD Cover end)


Well Known and Active Forum User
VOC Member
At the Annual Rally I paid good money for a BG1507/02 Rev-counter drive to use on my Twin. That's the one with 2 ball-races to support the input shaft. When I stripped it, it was in awful condition having clearly been full of water for years. The bearings were badly pitted and the balls that weren't missing are like "octagonal spheres" and 10+ thou down on diameter! It had all been packed with clean, new, moly grease!

Anyway, I am trying to restore it for use on the ATD Cover of my Twin. But can anyone tell me, please, the bearing dimensions and/or numbers that I need? (There are 2 of them - but different sizes).

Peter B
Bristol, UK.