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Re: Dec motor housing loose


 

hi,

I'm not clear on just what may be loose.? Here are some ideas to check out: (this is for a conventional G11 or GM8, with or without OPW.? One with an Ovision may be different.)

The motor is bolted to the gearbox.? Is that loose?? if so, find and tighten it's mounting bolts or add flat washers to further compress the mounting.?

The gearbox under the motor is bolted to the mount flange.? Is that loose?? To get to that, you must first unbolt the motor from the gearbox, then tighten down the gearbox...then re-attach the motor.?

The gearbox output shaft holds one of the round Oldham coupler metal parts.? make sure that is not loose.? Make sure the other Oldham coupler metal part is tightly attached to the worm shaft.? Make sure the two Oldham metal parts are tight into the plastic center piece.? (You can loosen the worm metal piece and slide it up into the plastic part, or slide the gear end part toward the plastic part.)??

Key, especially for RA, is to ensure all the parts of the Oldham are in line along the worm axis...look in all angles to get that correct.? You my have to fiddle with the gear box mounting to get that perfected.? Offsets in Oldham axis angles to the worm axis can induce PE, which you want to drive toward zero as much as possible.? ?
As far as I recall, on my CG11 and GM8, the mounting of the gearbox to its mount flange are 4-40 size.? You can often find split spring washers and flat washers of that size at hardware stores.? Or one or more flat washers could work.??

Some gear boxes are plastic, perhaps with a metal ferrule fitted, and it takes additional thought about making the mounting rigid.? ?

Hope this helps, ...
Michael?





On Nov 17, 2017 5:24 PM, "puzzlewuzzle.dr@... [Losmandy_users]" <Losmandy_users@...m> wrote:
?

How may I tighten up my dec motor housing?

It has an 1/8 inch or so play when I grasp the housing and wiggle.

The G-11 is newly acquired so I am reluctant to try to use the drive with the looseness of the motor.

The motor does run, at least it makes noise when I trigger the control button on the 492.

Does the flexible plastic cover peal off to reveal the bolts?

Thanks again for all the guidance and response from the group members.

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