Fixing a bad not working window motor

[rhodes2010]

Sorry I did not take pictures. I know how mportant they are.

I was all set to order a replacement motor for my 1983 300SD drivers window
when I discovered that it could be made to work by simply putting
a shim/spacer between motor and gearhead.

The window stopped working. After testing that electricity and switch
were operating properly. I had to remove the motor from the gearhead.
Two T20 torx screws hold motor to gearhead. Then I had to unscrew the
motor from gearhead ( I thought I had broken it while unscrewing).

Then removed regulator from door to get gearhead off.

This is where the accident happened. On a lark I loosely attached
motor to gearhead - loosely , and applied power using a battery charger.
The motor spun fine both directions.

Thinking all it needed was to be lubed I reassembled everything and
the motor failed to spin.

When I cracked the T20 torx screws a turn or two the motor worked fine.

I tried lossening a screw on the gearhead that looks to hold the motor
shaft in, but it had been crimped and would not move.

So I shimmed the motor away from gearhead with about 1/16 inch layer
of material (you could use rubber, cardboard, sliver of wood, even
a metal washer).

Reassembled and the motor operates the regulator fine.
My only regret is not sealing the gap with silicone between motor and gearhead.

I lubed everything on the regulator, replaced the single sliding jaw,
reinstalled.

Hope this helps anybody who may be able to save a few bucks
getting a motor to work again.

[vstech]

awesome! I will now try fixing my window motor!
thanks!