Window lifter motor repaired

[vincematthews]

The window lifter motors on 924s & 944s, with prices between between £185 and £250, are not something you want to replace.
I was about to park in town when the window decided it wasn't coming back up.
Returning home, I stripped out the door trim and removed the mechanism. Everything seemed to work except the motor.

At this point I have to say a massive thanks to Bert Gear of Berlyn Services (01271 866818) for his advice to check the motor one more time (even though I was sure it was faulty).

I took the black cover of the motor off and started checking continuity inside with a multimeter. Eventually I found that the 'pop rivet' that holds one of the outside electrical connectors to its matching inside connector had lost its inside flange (presumably due to corrosion) so the inside connector was no longer connected.

I took the motor apart, tying the brushes into their slots and pulled out the armature to get it out of the way. I then soldered the inside connector to what remained of the pop rivet and re-assembled it.
Result . . . [] - one working motor and no big bill . . .

Its worth mentioning that when refitting in the car the outside connectors need treating with repect otherwise the solder joint inside may get broken.

 

[PaulHere]

Blimey, I had no idea they were so expensive - I remember I had to replace one a few years ago as the metal cog on the motor had utterly ground down, I'm a rubbish mechanic but I managed to replace the motor myself after a bit with a secondhand one.

I took time to see if the old one still worked after cleaning it up and it did - it just got gummed up over time.