Window Regulator Fix

mchristyuk

Junior Member
Messages
668
In the underground car park near work enjoying the sound of my SM X-Pipe and decat when... judder, judder.. cock.. the drivers side window is stuck down.

Quick search on the internet.. £500+ for a new one or £300 for second hand.. I think not. Whilst I don't mind spending money on my car I do object to spending money on cheaply made poorly finished parts that will probably fail shortly after anyway. So, off with the door card to see what's going on..

Motor was clearly fine as I could hear it whirring away, however what wasn't so healthy was the toothed plate which was lying in the bottom of the door and is a known weak spot (cr@ppy welds).

So here's what I did to fix it for approx £5 and with no "specialist tools" such as welding equipment to hand...

1) Lower the window (not difficult in my case!) so that you can see the two bolts which hold the window to the regulator. Remove. Once these are out you can lift the window up by hand and then shove a plastic biro pen through the hole at the top to stop it going anywhere.

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2) Remove the 6 nuts holding the regulator in place and drop it down. Wiggle it half the way out and then disconnect the wires (in my case 2 connectors). Then it can come all the way out.

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3) The offending item...

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4) So my cunning plan (in best Baldrick fashion) was a belt and braces approach.. First up a good portion of JB Weld metal glue that was left to dry overnight. I made a pencil line across the top of the old welds so I could line the half moon piece up accurately. If I didn't then there's a chance it would jam half way around.

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5) Not expecting JB Weld on it's own to be able to put up with the demands of the window I then drilled through and put 3 short M3 bolts through. I counter sunk the bolt head side and used button headed bolts (what I had to hand), although countersunk bolts would have been better. Nuts were added to the other side and lots of Loctite used as they were tightened down.

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6) Now reinstall back in the car. It should be clear from the metal work where the nuts had been, and of course the window hadn't been removed anyway. As luck would have it my window was aligned perfectly first time.

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7) Put the door card back on and marvel at your handy work.

Apart from waiting for the JB Weld to dry this was about 2 hours work and probably the easiest window regulator I've ever worked on. Not sure why people say they're a fiddle on these cars as there's actually really good access and space.

Now just waiting for the other side to fall apart in sympathy...! :)

Mark
 

Mr K

Member
Messages
321
Good job - should last better than those 3 spot welds. JB Weld's fantastic stuff.
 

highlander

Member
Messages
5,222
Mark, you need to move to the highlands mate.......marci will find plenty to keep you busy ;)
Top fix mate, well done!
 

zagatoes30

Member
Messages
20,936
Good save, even the teeth on yours look in good nick as they often wear especially the bits that lift and drop the window each time the door is opened
 

alfatwo

Member
Messages
5,517
Brilliant tech.. why didn't you just get one off a 916 Alfa ..must have been Sunday evening ;)

Dave
 

mchristyuk

Junior Member
Messages
668
Mark, you need to move to the highlands mate.......marci will find plenty to keep you busy ;)
Top fix mate, well done!

With a wife, 11 month old Daughter and a Maserati in my life I think I have a enough high maintenance females to last me for a long, long time.. thanks for the kind offer though! :)

Mark
 

Tas4200coupe

Junior Member
Messages
69
Sorry fellas, prepare to be thread-hijacked!

Over the weekend my rhs window simply stopped working. I had a local auto electrician look at it today and he seems convinced that the motor needs replacing - which of course is the motor and regulator! Something over $1,000 AUD - just like that!

My question relates to "alfatwo's" comment above about the Alfa 916 piece. I've looked at the Alfa 916 regulator piece and it does not look the same as ours but can the motor be taken off and installed straight into our window regulator unit?

Curious and grateful for an answer!

Many thanks,

Kim.
 

conaero

Forum Owner
Messages
34,630
Sorry fellas, prepare to be thread-hijacked!

Over the weekend my rhs window simply stopped working. I had a local auto electrician look at it today and he seems convinced that the motor needs replacing - which of course is the motor and regulator! Something over $1,000 AUD - just like that!

My question relates to "alfatwo's" comment above about the Alfa 916 piece. I've looked at the Alfa 916 regulator piece and it does not look the same as ours but can the motor be taken off and installed straight into our window regulator unit?

Curious and grateful for an answer!

Many thanks,

Kim.

It can yes, the difference is between the GTV and the 3200 is the large gear is in a different place on the GTV but all other parts can be ragged. You can even take your gear plate off and fit it into the GTV entire unit, just make sure you get the right GTV variant, see a picture of what you are buying first and compare it to what you have...basically you want the later type with the auto drop function, form circa 2000 onwards. You can tell this from the connector, one is 2 pin and the other 3 pin from memory and will have the microswitch.

Whilst you have it out, get the gear head to arm welds redone, the 3 spot welds have a habit of letting go.
 

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CraigWaterman11

Sponsor
Messages
762
You know one of the things you have to be really careful of is the fact there is no inside clearance for any bolts or even rivets between the passing window pieces. Additionally, it's good you at least bolted it, how you really avoided the clearance issue I don't know. When I originally tried five stainless steel pop rivets of decent size, it pushed the swing arm and bent the rivets out enough for the teeth to no longer be engaged to roll up or down the window. It didn't completely drop the window, it just pushed it enough so it didn't bite. When I saw the clearance, and the issue, I decided the best recourse with the least amount of effort was just to weld it. I mean by the time you counter-sink, drill, bolt and JB weld the arm, in my mind it would have just been easier. Of course I do know how to weld, and have a welder. Most might have to take it down the street to do, but it would take all of about 5 mins if that to address.

Anyway, I think I shared this here a couple months before. It also deals with what happens to the middle pivot if you don't address this issue ahead of time. http://craig-waterman.com/?p=461
 

MrPea

Member
Messages
3,015
Nice fix!

I had to change mine on the old Spyder because the motor's gears had conked out. Unfortunately I wasn't aware of the forum at the time to discover it could easily be replaced, so I bought a new lifting assembly. That said, it all worked perfectly after I swapped it all and it is indeed a pretty easy job - even to align the glass.

That leaves one thing... I have a spare RH assembly with all the metal stuff intact - just a motor that needs replacing. If anyone wants it, get in touch.
 

mchristyuk

Junior Member
Messages
668
You know one of the things you have to be really careful of is the fact there is no inside clearance for any bolts or even rivets between the passing window pieces. Additionally, it's good you at least bolted it, how you really avoided the clearance issue I don't know. When I originally tried five stainless steel pop rivets of decent size, it pushed the swing arm and bent the rivets out enough for the teeth to no longer be engaged to roll up or down the window. It didn't completely drop the window, it just pushed it enough so it didn't bite. When I saw the clearance, and the issue, I decided the best recourse with the least amount of effort was just to weld it. I mean by the time you counter-sink, drill, bolt and JB weld the arm, in my mind it would have just been easier. Of course I do know how to weld, and have a welder. Most might have to take it down the street to do, but it would take all of about 5 mins if that to address.

Anyway, I think I shared this here a couple months before. It also deals with what happens to the middle pivot if you don't address this issue ahead of time. http://craig-waterman.com/?p=461

Hi Craig,

I studied your website for ages before deciding what to do.. if I had the equipment and talent to hand to weld it I would have done.. but I didn't :)

As for clearance, there's no issue whatsoever on the one side of the mechanism, but the side which gets closest to the motor housing plate would have issues if I didn't countersink the screws in to the metal. As they are flush with it there's no problem.

Cheers

Mark
 

CraigWaterman11

Sponsor
Messages
762
Well that's the true long and short of it right there, as long as it works and it's within your means of expertise, it really doesn't matter how you get there in my mind.
 

Frog3200

Junior Member
Messages
53
I currently have a regulator issue on the left side. It's not the motor but the teeth on the mecanism that are totally gone at the end of the course (window up). My question is what is the gear difference with an alfa 916 regulator ? Is it precisely the "teethed" part ? I've just ordered 2 on the bay, would be pitty if they are useless !
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