Re: Push Button Woes

Posted by HH56 On 2011/4/29 10:01:36

A go thru of the unit would certainly be a good idea but in the short term, with your mention of a bad motor mount, all the more reason to check the unit and it's positioning. The frame is extremely close to the actuator assy and if the motor rocked or sagged, it's very possible actuator got bumped and is now out of position. I believe that was even mentioned in an article.

At the very least, I would check and verify the motor is fairly horizontal as shown in fig 240 in Twin Ultramatic supplement section of SM. If it's tight but at an angle, then I'd be suspicious. Might even pay to go thru the alignment procedure even if all is straight. If you remove the unit and send it in, you'll need to be familiar with the procedure anyway so you can remove and reinstall it.

Another advantage to going thru the procedure now is to check the tightness of the inner control valve link to shaft. A loose set screw there (a frequent and known issue) could also cause your problems and could not be ruled out if feeling the hard detent the procedure asks for is not happening within a very small amount of moving the assy.