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  #1  
Old 03-25-2015, 05:11 PM
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Join Date: Mar 2015
Posts: 4
560SEC stuck window regulator

well i seem to have a stuck motor/regulator. have undone seven nuts/bolts that i can find. (see picture with numbers). but the thing will not budge. two of the three bolts (#2 and #3 ) holding the motor/gears are jammed and seem to have worn the sheetmetal of the door. i can get the third one pushed out, but the other two will not budge. glass does not move, nor any of the regulator.

window stopped working in up/closed position. i confirmed 12v to motor, so i guess motor is dead or whole thing is jammed. motor doesn't make noise when switch is activated.

any advice!? i guess i may need to turn to a professional. :-(
thanks.
Attached Thumbnails
560SEC stuck window regulator-16309591313_a15b5627c4_z.jpg   560SEC stuck window regulator-16722327877_72de9c5d82_k.jpg   560SEC stuck window regulator-16741779460_5c65441a60_z.jpg   560SEC stuck window regulator-16742191090_1db3dd324d_c.jpg  
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  #2  
Old 03-25-2015, 07:14 PM
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Join Date: Feb 2011
Location: Modesto CA
Posts: 2,169
demet:

If the three bolts that secure the motor to the gear frame are removed, the motor can be pushed free of the gear. The gear can then be worked around to relieve the up force on the glass.

With the motor assembly free, it can be removed for testing without removing the whole regulator.
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  #3  
Old 03-26-2015, 01:22 AM
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Quote:
Originally Posted by Frank Reiner View Post
demet:

If the three bolts that secure the motor to the gear frame are removed, the motor can be pushed free of the gear. The gear can then be worked around to relieve the up force on the glass.

With the motor assembly free, it can be removed for testing without removing the whole regulator.
ah this is interesting, thank you. but when you say the "three bolts that secure the motor to the gear frame" - do you mean the three i already removed that attach motor/gear to the door ?(actually i guess i only removed the nuts).

or are there three specific bolts that attach motor to gear? i'll look for them tomorrow, but after reading dozens of posts and instructions, this is the first i've heard of this possibility. it would be great if i could do as you say!
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Old 03-26-2015, 07:41 AM
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Join Date: Jan 2003
Location: Matthews, NC
Posts: 1,356
A quick trick to try that has worked many times for me over the years. While holding the switch to the down position with the ignition on, tap the window motor with a small hammer a few times. If this works and the motor runs, replace the motor ASAP because it WILL do it again. If it doesn't work it has only cost you a few seconds.

PaulM
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84 500 SEL (307,xxx miles)
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  #5  
Old 03-26-2015, 12:04 PM
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Join Date: Feb 2011
Location: Modesto CA
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Quote:
Originally Posted by demet View Post
ah this is interesting, thank you. but when you say the "three bolts that secure the motor to the gear frame" - do you mean the three i already removed that attach motor/gear to the door ?(actually i guess i only removed the nuts).

or are there three specific bolts that attach motor to gear? i'll look for them tomorrow, but after reading dozens of posts and instructions, this is the first i've heard of this possibility. it would be great if i could do as you say!
At the upper end of the motor/motor bracket (visible in your third thumbnail) there is a triangle (about 2" on a side) of bolts and/or studs & nuts. Even with the low resolution of the thumbnails I think that the bolt in the upper point of the triangle can be seen. In any case, put a mirror behind the aluminum regulator frame where the motor is attached to it. The blind end of the bolts/nuts will be visible in the mirror. Since the glass is up, the bolts/nuts are accessible; albeit in tight quarters.
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  #6  
Old 03-27-2015, 08:33 PM
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Join Date: Mar 2015
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Quote:
Originally Posted by Frank Reiner View Post
At the upper end of the motor/motor bracket (visible in your third thumbnail) there is a triangle (about 2" on a side) of bolts and/or studs & nuts. Even with the low resolution of the thumbnails I think that the bolt in the upper point of the triangle can be seen. In any case, put a mirror behind the aluminum regulator frame where the motor is attached to it. The blind end of the bolts/nuts will be visible in the mirror. Since the glass is up, the bolts/nuts are accessible; albeit in tight quarters.
thank you frank! today i was able to detach the motror from the gears. indeed there were three bolts, and once they were removed motor pulled right off. confirmed motor is dead by reconnecting it to the wires, because i thought maybe regulator was jammed. but regulator seems fine, nothing from the motor.

so i went to four salvage yards, removed three door panels from 560sels, but motors looked different, and seemed to have different part numbers. tried to remove one anyway, just to see if maybe it would work, but couldn't get bolts removed for some reason.

so now i'm going to try to take apart my existing motor, and see if it can be reconditioned. i have never worked on a motor before. if i can't make any progress i will see about having it professionally reconditioned, if that's even a thing.

last option will be to buy new or used motor online. it's passenger front if anyone has one!
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  #7  
Old 03-29-2015, 01:44 PM
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Join Date: Mar 2015
Posts: 4
should i lubricate window motor?

motor i pulled out of door is dead, although gears move fine when i separate motor. i was able to find what looks like an identical motor from an 89 sel, although part number is different. it rotates freely and also under power.

my question is, before i try to install it, should i lubricate the motor? i have some synthetic lubrication spray, and also some 3in1 oil. there are two little holes at far end of motor (one of which has a plastic plug), are they for lubrication? thanks for any advice!

i will def add some grease to the gears.
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