Any tricks to reseating a Window?

[BunkyScott]

The passenger door window of my '72 240 won't go down or up. It's stuck about 1/3 of the way up.

I took everything off to expose the door shell and found the roller had come out of the bottom guide. After trying for some time to fix this thru the small openings in the steel shell, I was hoping for a better way to do this. No matter what I do, or how I position the window, I can't get the roller back in the window guide

Any suggestions, tips, prayers are appreciated.

thanks

Bill

[Brandy]

I had to replace the window regulator for my Z a fwe months ago - first thing is duct tape the glass itself as high up as you can - or remove it completely. I used a copy of one of my VC catalogs as a schematic for the window regulator (an FSM also helps):

I'm not a mechanic, so my 'lingo' of mechanical stuff is rather...unique, but bear with me.

The bottom guide is actually the easiest of the rollers. Just to the right of the bottom right access hole you will see a set of Bolts and screws. Reach inside the opening, and you will find a slot of sorts being held in place by the screws. Fit the upper two rollers sections of the regulator (if not already done); loosen or remove the lower guide, and fit THAT onto the roller, then fit the guide back onto the door, tighten all bolts. We also took that opportunity to clean and grease all the rollers.

Good luck.

[EScanlon]

I thought that I had posted my window adjustment articles to this site, and apparently I had not. Check out these two new threads in the Articles section.

http://www.classiczcars.com/forums/showthread.php?p=105028#post105028

and

http://www.classiczcars.com/forums/showthread.php?p=105031#post105031

Hope these help.

Enrique Scanlon

[BunkyScott]

thanks Brandy and Enrique for the links, they were very helpful.

Unfortunately, I'm still having problems.

I've taken apart all the window components, greased and cleaned them. All rollers are fine as are the gear teeth for the regulator. My problem is when I roll up the window, it stops/slows about 1/3 of the way up. This causes the rear of the window to go up, while the front doesn't and this angle makes it even worse.

The friction seems to be coming from the front sash, but if I remove the regulator arms from the window itself and just run the window up and down the front sash, it's smooth. I've taken the front sash off and checked it. Other than the normal slight curve, it's fine. No matter what combination of adjustments I make to the lower guide channel/front sash, it still doesn't work.

The regulator looks fine, but I'm wondering if the regulator spring/coil has lost it's tension and doesn't have the power to push the front side up?

Bill

[EScanlon]

...when I roll up the window, it stops/slows about 1/3 of the way up. This causes the rear of the window to go up, while the front doesn't and this angle makes it even worse.

This indicates that you do have a problem. It sounds as though the front sash is loose, or allowing the glass guide to slip out of it. The glass guide for the front sash is on the front part of the glass holder. It is a nylon bar that runs inside the front sash. It MUST be slid into the sash from the end, and not just inserted into it.

...The friction seems to be coming from the front sash, but if I remove the regulator arms from the window itself and just run the window up and down the front sash, it's smooth. I've taken the front sash off and checked it. Other than the normal slight curve, it's fine. The regulator looks fine, but I'm wondering if the regulator spring/coil has lost it's tension and doesn't have the power to push the front side up?

Bill

The spring being broken is usually more noticeable when it is tons easier to roll the window down than to roll it back up. If you have to pull on the window to roll it back up, that's a real good indication that the spring has broken, or that you have a very seriously misaligned system.

You might also check the condition of the groove in the angled part of the window frame. Check to make sure that there isn't material there that is forcing the window to stop. Sometimes, I've seen this fuzzy gasket get bent in such a way that the window is forced out of it's channel onto the edge of the frame.

Check that out and repost.

Enrique

[BunkyScott]

It sounds as though the front sash is loose, or allowing the glass guide to slip out of it.

-that's tight against the door metal and it's seated in the channel correctly

If you have to pull on the window to roll it back up, that's a real good indication that the spring has broken, or that you have a very seriously misaligned system.

-I do have to pull the window,

-spring isn't broken, from what I can see, and seems tightly wound

-the regulator arms are bent slightly differently, are they supposed to be straight? don't want to pull the other door to confirm

[BunkyScott]

Does anyone know where I can get a right(passenger) side window regulator for a '72 240. All the parts catalogs/dealers say it's discontinued by nissan, no aftermarket and only a junkyard item??

[Brandy]

MSA may have the part but you have to call them first; Victoria British also carries them. Junkyards and cars being parted out are the other sources. Check with some of the used/new parts dealers that are usually linked to this site as well as other Z-oriented ones. I was able to get a regulator in remarkably good condition from one of the used parts dealers on this site.

[Marty Rogan]

Bill,

I had the same problem with my car. Took it a part and readjusted it ten times with no improvement. I doubt you have a regulator problem.

What mine turned out to be is that the nylon guide got chewed up. When the window is rolled up, it cocks slightly before moving. This chewed up area then catches in the channel when the window cocks slightly and stops the window's upward movement. That is why the rear of the window goes up, but the front doesn't. I replaced the window with one from a parts car, with perfect nylon (parts car had 12k mile when totaled) and the problem went away.

I am not sure if you can buy just that lower bracket with the nylon section in it. Check the Club Parts CD. If you don't have it yet, buy it. That is indespensible in working on these cars. If the part isn't available from Nissan, try ZBarn: http://www.zbarn.com/ or ZCar source: http://www.zcarsource.com/main.html

Let us know how it turns out.

Marty

[BunkyScott]

I've pulled the window out and checked the front channel visually while it's still on the door and it looks fine. Without the regulator attached, the window slides up and down the front guide without a problem. I haven't physically removed it from the door to get a real close look, but based on the fact that I didn't see anything funky and the window slides without being attached to regulator, my assumption was to replace the reg....really frustrating problem:(

I did check with MSA and VB and they have the driver side, but no passenger side regulator.