Discussion Starter · #1 ·
Runout is measured with the flywheel assembly mounted between centers in the truing stand. The runout is measured as close as possible to the flywheel on each side, pinion and sprocket shaft. This is make sure that both shafts are running true to each other in the bearings, and that the drive gear on the pinion side and the drive sprocket on the sprocket shaft side are running true. Read carefully through the flywheel assembly and truing directions in the manual and study the pics carefully, it will be clear. The only thing that checking it at the end of the pinion with the flywheels mounted in the case can tell you is that it is not true. My question would be, if it is measuring .006 at the end of the pinion shaft, what does the pinion bushing in the nose cone look like? I would think it would have to be trashed.Thanks. I actually have a very similar manual, but somehow glossed over that. Just so I'm clear, is "Runout (shaft at flywheel)" at the pinion shaft where I measured it? Can I measure "Runout (flywheels at rim)" with the flywheels in the case and a dial indicator through the bore, or is that something different?
You have to read the entire instructions all the way through to get the context. That paragraph tells you to stop pressing the pinion bushing when it is flush in order to start the drill hole for the pin 3/16 deep. Once the hole is started you then press the bushing in the rest of the way, and then finish drilling the hole. This is because the hole is located in the bushing and the boss and if the bushing is all the way in you won't be able to drill the hole in the right place. The cam bushing is pressed in till the shoulder hits and then drilled.Can somebody help me understand what I'm missing here? Upon closer inspection I realized that even the picture in my manual of the gearcase cover bushings looks like what I posted, but clearly I don't understand what they mean by pressing them in flush with/against the cover boss.
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To get some sleep at night . . .Thanks for all the pointers, guys. At this point I'm going to let sleeping dogs lie and leave the bushings (and flywheels) alone unless things sound like they're going to fall apart when I finally get it going.
Sent you a DM.@WhizzbangK.C. Is Rev still around? I quit social media a few years back and have no way to reach him. If you could put me in touch, I'd greatly appreciate it. Thanks.