Talk:Hub/@comment-32827619-20170816141607

Hello, as the owner of a S/H Pronto, I found I had problems ensuring the rear gear hub was adjusted properly. According to the manual (and parts list) http://www.sturmey-archerheritage.com/files/view-286.pdf

According to that document, the anti rotation washers come in two thicknesses They are either 7.9mm [SA part no. HMW155] or 9.5mm thick. Mine were the thinner of the two, yet I couldn't see the end of the axle through the window in the nut. The washer is made of very hard steel, so filing it down would be well nigh impossible and very time consuming.

Research revealed that there were differences in the  X-RD3 parts list (there may be others)

http://www.sturmey-archer.com/files/catalog/files/306/PART%20LIST%20-%20XL-RD3.pdf

http://wayback.archive.org/web/*/http://www.sturmey-archer.com/en/products/detail/xl-rd3

That there are now three  anti rotation washers in three thicknesses, all rather thinner than either listed in the first document or on my bicycle.

HMW518 Lockwasher 4.0mm - 9.5mm Slot

HMW515 Lockwasher 1.8mm - 9.5mm Slot

HMW526 Lockwasher 2.0mm - 9.5mm Slot

Problem solved!

I hope this helps.