When setting up the hollow axle of the swing arm, I fit the E 80 nuts on each end of the hollow axle and trial fit it to the rear of the engine/gearbox attachment points and wind out each nut till it is a snug fit between these two points. Then when assembling the hollow axle with bearings/shims in place, you try to duplicate this measurement as best you can. If the assembly has had play for some time, it is possible that the ID of the hollow axle could be worn and this may show up as having too much play on the solid axle, though it is the clamping affect once the 1/2 inch bsf nuts are fully tightened after the pillion plates are installed that this should disappear. If the G50 plate (on the right side of a twin) has to distort to "Pull inward" to clamp up to the swing arm, this is not desirable and could be a later cause for gear shifting issues. Some G50 plates actually had a bevel on the inner edge of the plate to aid in the reassembly of the swingarm. The bearings of the swing arm should be assembled at first with no grease and shimmed so after the E80 nuts are tightened, that the hollow axle can be just rotated by hand. This small amount of pre-load ensures that the swingarm has nil play and stay that way during service. Once this is achieved, then disassemble and grease the bearings, and reassemble as before. Sounds tedious, but does not take too long in reality. It is worth doing correctly, as this is not something you should need to do often. It is also quite normal for the E 80 nuts to overhang the edges of the thread on the hollow axle, and if the axle is too long, then shorten it in a lathe......But this is seldom the case. Cheers...................Greg.
