Sunbird Power Window Motor & Regulator Safety Question

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As I have stated in my previous posts I am a beginner and have really been grateful for the help that Doug in PR and others have sent my way. My learning curve is steep but I am really enjoying this new hobby. So here's my question: I need to replace the power window motor on my 1991 Pontiac Sunbird LE convertible. I got the old motor and regulator out and (as you will agree I am sure) the regulator needs lots of steel brushing and clean up. However I ordered new motors and they came with a bracket that does not fit the orientation of the gearing of my original. So my thinking is if I were to remove the old bracket (there are only 3 rivets that hold it to the old motor) I could reattach it either with rivets or bolts and it would fit. HOWEVER I am concerned about the high tension spring that exists on the regulator. I know how dangerous old Victorola phonograph springs and garage door opener springs can be and do not want to inflict any damage to myself by doing something stupid. Can I remove the 3 rivets from the regulator (as shown in the photo) and the spring stay intact or will either the spring fly off to parts unknown and/or the two bars of the regulator snap shut and possibly injure a finger or hand? I considered buying a regulator with the motors already attached but none of them seem to be pictured with the two bars of my original regulator so I thought just substituting the motor might be a better way to go. Thanks to this forum for its help.
 

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My guess would to be drill a hole in it somewhere that doesn't effect anything, bolt it so it doesn't move, install new motor , remove said bolt....

Doug in P.R.😎
 
Thanks Doug. I did exactly that after vice-gripping the old regulator. After drilling out the three rivits and bolting them I loosened the bolts just enough to wiggle the old motor to see if anything else was getting ready to "cut loose." Nothing did. So I removed the bolts, installed the new motor and I am a happy automotive tenderfoot. Really appreciate you jumping in there for me again.
 
Just suggested that first, after looking up stuff on the Cavalier sister posts later on, nothing was mentioned of it springing ...

Doug in P.R.😎
 
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