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Power window motor removal - series 1 type

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GRNSHRK
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Power window motor removal - series 1 type

Post by GRNSHRK » Wed May 19, 2021 6:51 pm

Gents, I still have the passenger door card off and have been working on what was a very lazy passenger side window operation, which now is not working at all ](*,)

It was really laboring so I cleaned and lubricated the fore and aft tracks and rollers, and the window itself moves quite freely now =D>

But, now the motor, while turning (I can hear it), it doesn't move the window at all :twisted:

I have discussed this with a few members and at first it seemed related to working on the tracks, and I did unbolt the brackets to gain better access to the rollers, which were quite gummed up with 40 year old grease :roll:

But I was also very careful to bolt everything back up in as exact locations as possible, so I don't "think" this is related :-k

At this point I think it's just coincidental that the motor no longer drives the window, thinking that the pinion gear that engages the much larger gear which is attached to the scissor mechanism that actually lifts the window is no longer being driven by the motor :-"

So I would like to know what it takes to remove the motor, even the "big blue book" doesn't show this process [-(

If you guys have BTDT, please enlighten me [-o<
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Jlc
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Re: Power window motor removal - series 1 type

Post by Jlc » Wed May 19, 2021 7:53 pm

Some general thoughts based on my experience with electric motors:

I'm guessing it is press fit, so there is no way to tighten it. Did you have to force something to remove stuff?

It seems there are at least 3 failure points:
Pinion-shaft/pinion lift mechansim/Lift mechanism

If you can access the pinion gear you should be able to see if it is slipping. Depending on the space, grasp the shaft with a pi=air of needle nose piers and spin the pinion. I find it odd it would slip after making the mechanism easier to move, but it is possible.

It could be an engagement issue. Can you move the mechanism up and down by hand and see if the gear rotates? That would tell you if the something is misaligned. If it does turn, yo can also see if the shaft turns as well; if not then it is a gear slipping under load issue.

Can you turn the large gear independently to see if the mechanism moves the window?

Not sure if this helps.
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Ralph in Socal
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Re: Power window motor removal - series 1 type

Post by Ralph in Socal » Wed May 19, 2021 8:01 pm

I’ll have a good look on Friday as I’ll be at my yard. I have the passenger glass already out in my 81 so the regulator “should” be easier to take out. If lucky the regulator comes out easily and gets shipped quickly 😂

Ralph
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Re: Power window motor removal - series 1 type

Post by Ralph in Socal » Sat May 22, 2021 7:49 pm

A bit of work to remove the regulator. Glass was already out, had to then remove the 2 vertical rails with the rollers then the regulator requires moving the rear tips into the upper rear corner of the door to finesse the motor end out of the door

Pic shows 3 bolts holding motor assembly to the regulator. This type of regulator has the plastic emergency drive permanently attached to the motor gear. A simple push-in releases the regulator from the motor inside the motor gearbox.

First make sure the 3 bolts are intact and tight. Then check the plastic emergency crank. Make sure it “pops” out to engage the internal gear in the motor gearbox. Good luck and let me know if you need more info.

Ralph
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There is a very fine line between "Hobby" and Mental Illness.

85 635csi Zinno Auto
84 528i Euro
83 635 Euro Arktik
81 528i Kastanien 5-speed
88 528e Bronzit (Granpa Car)
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Re: Power window motor removal - series 1 type

Post by GRNSHRK » Sat May 22, 2021 9:24 pm

Oh geez :cry:

I've been in touch with Klaus regarding this process, and he also claimed that the glass needs to come out first as well :-?

But he's outa town right now so I haven't heard back from him yet, so I haven't done anything else yet either :-"

He told me that the glass does need to come out first as well, due to the weight of the glass resting on the regulator [-X

But what's weird is that I can move the glass up and down freely with my hands, Ralph this is a change from when we met up, as the drive was still working at the time, sorta :roll:

And when I tried to unbolt the regulator, it felt quite heavy so I bolted it back in place, and that's where I'm at :-k

This was not what I was expecting to be facing :-({|=
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Ralph in Socal
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Re: Power window motor removal - series 1 type

Post by Ralph in Socal » Sun May 23, 2021 4:31 am

The problem is the drive gear is not popping out all the way. The plastic is also a splined fit bearing for the drive gear. If it’s just flopping around that means the drive gear is stuck in the pushed-in position and the splines are not mated up. Line up the splines and push in to engage with the drive gear then see if you can free it up. The cogs are internal to the gear box so I don’t think a spray lube will be effective

See if you can reconnect the drive without removal. Good luck

Ralph
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There is a very fine line between "Hobby" and Mental Illness.

85 635csi Zinno Auto
84 528i Euro
83 635 Euro Arktik
81 528i Kastanien 5-speed
88 528e Bronzit (Granpa Car)
86 535i Auto (For Sale)
81 633 csi (retired)

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Re: Power window motor removal - series 1 type

Post by Dmckim » Fri Jun 11, 2021 1:47 am

Bobbo

I did this 15 years ago, so my memory is fuzzy, but i definitely didn't take the glass out when I did my window motor swap. IIRC, I used those cinch clamps to hold the window up, which relieved the weight of the glass.

That being said, I do recall having a hard time getting all the hardware back in once the motor was swapped. On the list for when I retire / get fired / win lotto.

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GRNSHRK
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Re: Power window motor removal - series 1 type

Post by GRNSHRK » Fri Jun 11, 2021 3:28 am

Dale, I replied to your PM, talk soon!
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