both passanger and driver windows slip down after a while. i crank them back up but they come down again. has any one run into this before?

Sounds as though your crank mechanisms have broken springs.

Unfortunately, I am not aware of where, or if, replacement springs are available.

The Crank mechanism has a spiral spring that attaches to the main spline. The spring acts to counter-balance the weight of the window pane in whatever position you leave them in.

The only other possibility would be that the gear the scissor arms are connected to has begun to have some play which would allow the scissor arms to skip a few teeth and "fall" down until they get caught again.

If your windows slide down smoothly, then it's the spring. If they clunk down in stages it's a bad gear or bad gear alignment.

Enrique Scanlon

yes they go down smooth. is there something someone could jury rig to get them to stay?

go ottawa senators:classic:

That means that your window crank handles in the car are going round and round.

A very cheap "jury-rig" would be to stick one of those pencil erasers in block form that's been cut to size to fit in there snuggly. That way the rubber would keep the handle from twisting around and still not damage your door panels.

Now if you really want to go cheap, drill a bunch of holes in the door panels, and stick a peg in there to stop the crank handle from going round. Granted, it won't be cheap later when you have to replace the door panels.

Now, you might be able to go to the boneyard and find a pair of springs for another Z, in which case that's the way I'd do it.

2¢

Enrique

the window only slips a half to quarter of an inch. the window does not go down any further. not enough drill hole for. i would like to do it properly, but we dont have any z lying in out pick a part places

The drilling holes suggestion was entirely tongue in cheek. I wouldn't expect you to do that unless you were really intent on destroying your interior.

If it's only a 1/4 or 1/2 inch, then it may NOT be a broken spring, but rather just a worn mechanism. Whether the shaft of the crank spline has now become worn, or the teeth on the scissor gear have become worn. Combine that with the probability that your "fuzzy" gasketing inside the channel has become worn and you have a good situation for the windows to slip that much.

You might be able to check e-Bay and find crank arms. I've seen them offered from time to time. The other is to check with other members here, someone may have an extra pair.

Good Luck

Enrique Scanlon

The car IS 33 years old, new regulators could'nt hurt.

You'd probably have to pull the reg's to repair them anyway, why not go new.

Just my $.02c

Dave

I just replaced on in my 74 260. take off the door panel and you'll find 4 screws that hold the entire mechanism in place. its possible those have loosened up and the whole assembly is sliding down causing the window to go with it. either way you are going to have to remove the door panel to get in there and have a look.