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I have an ISL950 A It DOES lift and close the door every time. Butt, for several years now 75% of the time, more when the outside temp is below 40 degrees, and only on the lift/open... While opening there is a very loud rattling grinding screeching noise from the Head unit, focused in the front near where the Screw mounts to the motor. The door always opens without hesitation. If I whack the back of the Head unit with my hand, hard, the noise stops and the door continues to open as it should. I’d like a list of the Parts that are likely to be related to this issue. Thanks, David
I would recommend lubricating the rail. If the issue still occurs it would be a motor issue and the motor is no longer available for this unit, so it would require a complete unit replacement at that point.
