The new A4 is in, but aligning the motor and the shaft is proving difficult. I had the shaft coupling on the shaft and was attempting to line it up with the output coupling on the motor. I'd bring the two together until they touched at one point and then I'd measure the gap on the opposite side. However, I found that when I rotated the mated pieces, the gap rotated with them. Next, I tried sliding the shaft out of the shaft coupling, and bolting the shaft coupling to the output coupling. The two mated well, with no measurable gap, but now the hole for the shaft wobbles as though it is drilled off-center.
The shaft is not bent. The mating surfaces of the couplers are clean. When I ran the motor on the bench, the output coupler appeared to run true by eye.
Maybe that's not the clearest description, so I took a video. Here I've slid the shaft back so that it is almost out of the shaft coupler. The key is removed and the coupler can rotate without rotating the shaft.
Any ideas what I should check? Thanks guys.
[YOUTUBE]SnYFfGYyfNo[/YOUTUBE]
The shaft is not bent. The mating surfaces of the couplers are clean. When I ran the motor on the bench, the output coupler appeared to run true by eye.
Maybe that's not the clearest description, so I took a video. Here I've slid the shaft back so that it is almost out of the shaft coupler. The key is removed and the coupler can rotate without rotating the shaft.
Any ideas what I should check? Thanks guys.
[YOUTUBE]SnYFfGYyfNo[/YOUTUBE]
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