After further research I decided to attempt the "drill out spot welds, and bolt in place" repair. I picked up some 6 mm bolts & nylock nuts. This "repair" is a bit of a challenge, the door has to come off, easy enough, drilling out the spot welds isn't that big of a deal, but getting a nut on the inside of the A pillar through that little plug is darn near impossible without being a contortionist. I read every version of the repair I could find on all of the Volvo forums and attempted all posted tips/tricks and a few of my own.
Door off: My first attempt at drilling out what was left of the original weld, was frustrating, the mount kept moving, so I had to figure out a way to hold it in place while drilling. A ratchet strap came in handy for that. Drilling out the welds was simple, I "eyeballed" the center, and used a spring loaded center punch to keep my drill from walking. I started with something small, 3/32" for a pilot hole, and then rummaged through my bits, until I found something ever-so-slightly larger than the bolts I was using. When I finished drilling, I shot some rattle can implement paint that was close to the same color of the car to cover any bare metal. I used some 6mm bolts, nylock nuts, and locktite, I never wanted these to come loose. Putting a bolt in a hole is no big deal, but getting the nut on the inside of the A-pillar is one of the most frustrating things I've done on this car, and I've done the rear delta link bushings, and swapped an engine on it since I've had it.
I was able to get the nuts "started" by bending a 10mm combo wrench in my vice, and obviously hot glued the nut in place. You'll also noticed fishing line tied on the wrench so I could fish it out of the inside of the A-pillar in case I dropped it, which I had to use more times than I'd care to admit. I eventually bent the wrench even more than the picture shows, but to no avail, due to the angle the little access hole in the A-pillar is located it was impossible to actually get the nuts tightened onto the bolts. Next solution was to cut the box-end off of the bent combo wrench and create the "finger wrench." I can't take credit for this, it was suggested in one of the other threads I read about this repair. I was able to successfully tighten everything by contorting my finger with wrench into the opening, and had to "feel" the wrench onto the nut. It worked but dang near broke my finger in the process, I highly recommend against any power tools for this part, I had originally got my cordless impact out for the repair, but thought better of it when the finger wrench came into play. After much trial and tribulation, finally "fixed" right? I was pretty happy with myself, I put the door back on, reattached the check strap to the A-pillar mount and shut it. No, "pop," Awesome! I open the door and there was one very loud "pop," subsequently followed to the same old "pop" it had been making for over a month now. I saw red, I was so pissed.
Another week or so passed, before I worked up the nerve to attempt the fix again. I don't have a welder at home, but the techs at work do, and I convinced the shop foreman to let me stay after work and use it one Saturday.
I forgot to take my camera to work, so all I had was the camera on my phone, so the next pictures aren't that good. Additionally I was on a bit of a time crunch so I didn't take many.
First thing I noticed when removing the door again was the bottom bolt "missing," my assumption is that the first loud "pop" I heard after the first "fix" was the head of the bolt popping off. That would explain why my original "fix" didn't take. Now I'm not a "welder" by any stretch of the imagination, I know what I'm doing, but actually "doing" it isn't exactly the same. I had a metals class many eons ago in High School, even took a metals & welding class in college for fun. I've worked with some extremely talented welders back when I was doing CAD/engineered drawings for a fab shop, I learned a lot from them, and I've stuck my fair share of metal together growing up on a farm, but a pro welder, I am not. Proof that knowledge & execution are two totally different things.
The definition of what most in the trade would call, booger or bird sh!t welds. I had a coat of paint on it before I remembered to take a picture, so I just went ahead and painted the whole thing before taking a picture. If I had it to do over again I'd probably remove the one bolt, and weld the whole thing, but at the time I didn't have an easy way to cut the bolt off without potentially damaging the more of the car, really needed a little cutoff tool, only had 4-1/2 grinder with me, and as stated before limited time after work.
I'm over a week since welding the A-pillar, and the door is still good as new.
I have come to the conclusion after all of the BS I went through "repairing" this thing, the only REAL fix is welding. I suppose if I had possibly used grade 8.8 or 10.9 instead of grade 4.8 bolts, I may have "fixed" it the first time, but if I had just welded it to begin with I would have saved myself a couple hours of head scratching, busted knuckles, a bent/cut-in-half wrench, and a whole lot of grief.
So there you go, if you need to do this repair, don't waste your time, just weld it, or find someone who can weld it for you.
- Lee







