Gang, I was inspecting the driver's electric window mechanism on the 280SEL last night. The window is in the habit of slipping down. The motor works, but the glass falls. Opening up the door revealed that the large gear on the lifter is badly worn on one side and needs to be replaced.
My question is about the wear pattern: it is one-sided, and it looks like the motor gear and regulator gear are not on the same plane, causing the regulator gear to rub against the support and wear on one side only. I can't see anything obvious that is broken or hanging loose. The casting looks bent where the regulator gear passes between it and the door inner skin, which is odd because I thought the casting was made of pot metal and would break, not bend. Is there some typical failure mode of the window motor/winder assembly that would cause the gear to rub against the support and thus wear unevenly? Apart from replacing the window regulator, is there something else I should be looking for (eg. I have not yet removed the motor to inspect its gear, but I assume that MB specified the motor gear to be harder steel than the regulator gear!). TIA, D. _______________________________________ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
