Gen 1 door fatigue fix
Gen 1 door fatigue fix

This is the bottom of the driver's side front door, just below the power window mounting -- the two 10mm bolt heads you can see are the lower window regulator mounting bolts. Both front doors have identical metal fatigue, and you can hear a heavy rattle/clunk when shutting the doors, when the portion of the door carrying the window motor & regulator oilcans.
Four years ago, I had identical fatigue on my Aerostar's doors, and fixed those using some custom aluminum double plates to reinforce over the cracked area. However, that's going to be harder to do with these doors.
Without a working "Search" feature, I don't know whether this is a common problem on the Gen 1s or not, so I'll just have to ask: has someone the magic answer on how they've fixed this problem on their Gen 1 doors?
If not, I'll just have to fab something again.
TIA,
Al S.
You're right, it doesn't display here at work, either (W98, IE 5.5). It displayed fine on Mozilla 1.6 . I'll have to look into it when I get home.
[later]
It was an incomplete ftp upload -- the last 40k were missing. Mozilla handles this gracefully, IE doesn't. Fixed now.
[later]
It was an incomplete ftp upload -- the last 40k were missing. Mozilla handles this gracefully, IE doesn't. Fixed now.
Well, a couple of days ago I fixed the front doors up, by taking some .062" 9x10" aluminum sheet, forming a 1.25" lip at the bottom, and pop-riveting them over the inner door skins, to reinforce the doors. They work great! Now I can close the doors and they do not rattle or clunk.


The four 1-1/8" holes allow access to the windor regulators' mounting bolts. I needed to do this in case I have to replace a window lift motor, but also to allow me to unbolt each regulator assy so I could drill holes and install the pop rivets. With the regulators bolted in, there was not enough room to insert the pop rivets in some locations, nor was I comfortable with drilling the holes -- I might have drilled into a lift motor!

All's well that ends well.
Regards,
Al S.


The four 1-1/8" holes allow access to the windor regulators' mounting bolts. I needed to do this in case I have to replace a window lift motor, but also to allow me to unbolt each regulator assy so I could drill holes and install the pop rivets. With the regulators bolted in, there was not enough room to insert the pop rivets in some locations, nor was I comfortable with drilling the holes -- I might have drilled into a lift motor!

All's well that ends well.
Regards,
Al S.
I had the same problem on my drivers door. I just ground the paint off and spot welded it back together. I used an ARC welder, and would suggest using a MIG welder if possible (If you plan to weld it) and then spray the metal to prevent rusting. Your fix looks nice, thats the same style I use when I dont have a welder available.
-Chris
-Chris
I'm not driving the car yet (just got it back, five years on loan, many things need attention), but I did a similar fix to both doors on my '89 Aerostar four years ago, which is my daily driver. On it, I can hear some minor rattling in the driver's door again, so it may have broken loose, or another crack developed. On that one, I used bolts/nylock nuts and a heavier alum. plate, but I didn't have to wrap the lower door edge like I did on the Maxima; there was plenty of solid metal to attach the doubler to, without having it extend around a corner!
I thought about welding, but . . . well, I'm a lousy welder, and once metal fatigue cracks like this, it's difficult to weld it and have it not re-crack, at least, that's what I've found on related projects. Doubler plates have worked pretty well for me for similar projects.
A shop down the street sold and cut me the two panels (9x10") for $5. For both. Can't beat that! I did have to go buy a new hole saw, though. My old ones seem to be missing (again).
The big downside to the above fix is that it does show, in a minor way. If you get your head low enough, you can see the "wrap" on the lower edge, because the inside door panel does not cover it. But my car is a rusty '82 wagon that lived its first 15 yrs in Pennsylvania (though it didn't get driven much) and it's starting to lose parts of the rocker panels. The floor is solid (I had it up on a lift last night) but the rockers have a couple of minor (quarter-sized) holes showing.
IOW, the fix is appropriate to the vehicle. If it had been a nicer car, I might have cut a doubler plate that extended in different directions and which didn't show, but I put two of those panels on and did it all (two doors, including pulling/replacing the door panels, and re-gluing the plastic liner sheets so I don't get drafts inside) in about three hours, and to do it nicer would have taken twice that long for only a minor improvement in cosmetics. To me, having the lower edges of the patch panels show is minor.
I thought about welding, but . . . well, I'm a lousy welder, and once metal fatigue cracks like this, it's difficult to weld it and have it not re-crack, at least, that's what I've found on related projects. Doubler plates have worked pretty well for me for similar projects.
A shop down the street sold and cut me the two panels (9x10") for $5. For both. Can't beat that! I did have to go buy a new hole saw, though. My old ones seem to be missing (again).
The big downside to the above fix is that it does show, in a minor way. If you get your head low enough, you can see the "wrap" on the lower edge, because the inside door panel does not cover it. But my car is a rusty '82 wagon that lived its first 15 yrs in Pennsylvania (though it didn't get driven much) and it's starting to lose parts of the rocker panels. The floor is solid (I had it up on a lift last night) but the rockers have a couple of minor (quarter-sized) holes showing.
IOW, the fix is appropriate to the vehicle. If it had been a nicer car, I might have cut a doubler plate that extended in different directions and which didn't show, but I put two of those panels on and did it all (two doors, including pulling/replacing the door panels, and re-gluing the plastic liner sheets so I don't get drafts inside) in about three hours, and to do it nicer would have taken twice that long for only a minor improvement in cosmetics. To me, having the lower edges of the patch panels show is minor.
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