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Old Dec 9, 2013 | 07:21 PM
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Default Window worries

Hello all. I just recently bought a 75 L82 4 speed. The drivers window operates as it should until it gets about 3'' from the top. I can lift it up with both hands, but it won't lower with the switch until i push it down that 3 inches. Then it will lower. I serched previous posts and found one from lilmonster who had the same problem but his turned out to be a safety bolt that was'nt removed on the install. I'm thinking it would be the regulator and the gear on the motor.
The other window operates very slow, and only with the engine running. That sounds like it might be a bad ground to me. But I'm grasping at straws and don't want to go in the wrong direction. Any insight on this would be much appreciated. A point in the right direction. Thanks
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Old Dec 9, 2013 | 11:50 PM
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On a car this old the lubricant on the rollers and tracks that are part of the window mechanism gets dried out and gums up the system. Your best solution is to disassemble everything, clean up all the old grease, and reassemble with new grease. Yes its a big job and a PITA, but its the right way to do it. I've done my drivers side on my 79 because it was the worst, and I still have to do the passengers side. Right now my drivers side window goes down in about 1/2 second. The passengers side takes about three or four seconds.
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Old Dec 10, 2013 | 05:56 AM
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Thanks. Is there a step by step anywhere on this project? Removing the glass i imagine would be the first step, correct?
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Old Dec 10, 2013 | 07:03 AM
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Originally Posted by M-yellow01
...Removing the glass i imagine would be the first step, correct?...
Nope. The first step is deciding whether you can live with what you have for a while longer. Door glass removal, clean up, reinstallation, and window alignment is a major PITA.

Order the assembly instruction manual (AIM), take a look at what will be involved, then decide.

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Old Dec 10, 2013 | 08:03 AM
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If, you decide to pull the windows, mark where the adjustments are on the door parts, putting them back where they were is a good staring point for adjustment. The AIM will help on final adjustments.
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Old Dec 10, 2013 | 09:00 AM
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at the risk of being berated for this question,

is it plauasble to pull the door panel and use something like brake clean to clean off all the old lube and spray in new?

I've thought about doing the whole clean out thing but have chosen to "live with it" because I dont want to mess with all the realignment at this time, while in there I need to lube the moving parts of the outside door latch
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Old Dec 10, 2013 | 01:58 PM
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Originally Posted by Una4dbl55
at the risk of being berated for this question,

is it plauasble to pull the door panel and use something like brake clean to clean off all the old lube and spray in new?

I've thought about doing the whole clean out thing but have chosen to "live with it" because I dont want to mess with all the realignment at this time, while in there I need to lube the moving parts of the outside door latch
If you're going to go that way, I don't think I would recommend the Brake Cleens. I think I would just add new grease and let it mix with the old. Part of the problem is going to be the gearbox for the window motor. It is packed with grease and the only way to freshen it up is to remove the motor, disassemble it, and repack the gearbox. Just regreasing the tracks will undoubtedly provide some improvement, but diassembling everything is the best solution. When you're ready for it.
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Old Dec 10, 2013 | 05:21 PM
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Is it possible to change the regulator without removing the glass. I've read in other posts to put a bolt and nut though the regulator and plate when removing the motor,as not to cause injury or damage. My guess is that, it's not possible. But I'm going to lock up that regulator with a nut and bolt and pull the motor to inspect the drive gear and worm gear.
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Old Dec 10, 2013 | 05:50 PM
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Originally Posted by M-yellow01
Is it possible to change the regulator without removing the glass. I've read in other posts to put a bolt and nut though the regulator and plate when removing the motor,as not to cause injury or damage. My guess is that, it's not possible. But I'm going to lock up that regulator with a nut and bolt and pull the motor to inspect the drive gear and worm gear.
Check to see if the regulator spring is still there too. It assists in the up motion. If you have to replace it install the spring with the regulator in the full up position....it compresses on the down and expands to push up.

I have removed the motor without removing the regulator. Its a bit of a pain. You need to free the bottom of the regulator anyway to do it. Good idea on the bolt....if you have never done it before its a good safety option.

As for removing the whole thing with out removing the glass it is possible. You still need to get the glass of the rear track though.

The trick to getting the regulator out is to use the power to compress it to get it out of the opening. The power window motor grounds through the regulator when its bolted to the door. The power will not work once you free the regulator unless you touch it to the door frame anywhere while pushing the power button up or down. You may have to use a ground wire from anywhere on the motor or regulator to anywhere on the door metal.

Jim
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Old Dec 10, 2013 | 07:56 PM
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Originally Posted by Una4dbl55
at the risk of being berated for this question,

is it plauasble to pull the door panel and use something like brake clean to clean off all the old lube and spray in new?

I've thought about doing the whole clean out thing but have chosen to "live with it" because I dont want to mess with all the realignment at this time, while in there I need to lube the moving parts of the outside door latch
Brake clean will remove any paint it touches. Not a good idea.
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Old Dec 10, 2013 | 08:48 PM
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Originally Posted by drwet
If you're going to go that way, I don't think I would recommend the Brake Cleens. I think I would just add new grease and let it mix with the old. Part of the problem is going to be the gearbox for the window motor. It is packed with grease and the only way to freshen it up is to remove the motor, disassemble it, and repack the gearbox. Just regreasing the tracks will undoubtedly provide some improvement, but diassembling everything is the best solution. When you're ready for it.
Makes sense. Thanks


Originally Posted by paul 74
Brake clean will remove any paint it touches. Not a good idea.
I didn't realize that. But then I've only used it where ther was no paint. I'll keep that in mind,
Thank you also
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Old Dec 10, 2013 | 09:33 PM
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Thanks for all the tips guys. I'll be tackling this job, this weekend. All this insight will come in handy. Tom
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Old Dec 11, 2013 | 04:20 PM
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Originally Posted by M-yellow01
...Thanks for all the tips guys. I'll be tackling this job, this weekend....
Be extremely careful. If the door glass falls, you could mess up a finger or two in a heart beat.

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Old Dec 29, 2013 | 11:33 AM
  #14  
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I'm just now getting around to replacing the regulator on the drivers side as for the gear was badly worn. I go to reinstall the glass and notice that it dos'nt have a rear roller to go into the rear verticle track. There is a hole on the glass where it looks like one should go. It is not anywhere to be found. That seems crazy. Does anyboby know if that may be avalible at an auto part store?
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Old Dec 29, 2013 | 12:54 PM
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I found the roller. It came off while i was jimmying the window out, and stayed the the rear verticle track. This is my first window removal job, I just got a little nervous. Anyway, the job was a success. Although, the regulator gear was worn to a nub, someone had just recently replaced the motor gear, so it was in like new condition. However i did not remove the outer window seal, and as careful as i was removing the window, i still ruined the outer seal. It was very brittle anyway. I opted t go with a new regulator with new rollers, stainless steel gear,new spring and arms. I have not done the final widow adjustment yet because I'm going to rebuild the door hinges. Thanks for all the insight.
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