I have my Triumph gearbox apart for a refresh and while going thru the vari= ous tolerance checks,one of the thrust washers is too thin by 0.015 inch. = This part retains the 1st gear axially on the trans shaft. This part is no= longer available in any thickness - originally this part was available in =4 thickness ranges. The existing thrust washer is hard= ened. Since there is no rotation on this part (unless the mainshaft bearin= g seizes and then I have much bigger issues). I am thinking of using a 0.01= 5 thk round steel shim as a spacer between the bearing inner and the existi= ng thrust washer. This part would not be hardened (Rockwell B85). Does anyone see an issue wit= h this? =20
The other alternative is to turn a thrust washer on the lathe out of some m= ystery steel. Problem is that I have a difficult time parting off and keep= ing the cut square. I do not have access to a surface grinder.