Hi,
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Today my AD741 thickness height adjustment stopped working, seemingly out of the blue. Following are the details:
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My AD741 has power feed, but the issue is not related to the digital drive. As a matter of fact, the numbers on the display continue to go up and down, but the table does not move. Upon opening and inspecting, I noticed that the shaft attached to the drive motor does spin (circled in red). However, the gear on the opposite side of the piston does not (circled in blue). I can manually rotate the larger gear (circled in green) which in turn will rotate the small (blue) gear as well as rise or lower the table. However, when turning either of these gears, the shaft? on the opposite side of the piston (red) does not rotate. This means something connecting the shaft to the gear is broken. I had a look at the exploded parts view (attached) and it seems there is only a simple bolt (34) connecting the shaft to the gear. I have no idea if the gear is keyed at all or if the bolt only holds the gear in place by pressure.
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Has anybody had this happen? Is it indeed a snapped bolt or could it be a striped thread on the shaft (I won't know which would be worse)? And why would this happen during a simple rise/lower operation? Lastly, and most importantly, how do you go about repairing it? I don't want to take apart more than I absolutely must, but the bolt doesn't seem to be accessible without removing a lot of other components first ....
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Many thanks in advance for your help!
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Regards,?
Cornelius Schultze-Kraft
Cyprus?
