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I'm putting a lift on my 93 F-150 and it's time for the radius arm drop brackets. Left side no problem, all nuts and bolts. Right side a different story. I remeber doing this on my '76 a few years back and a real pain in the #ss. I drilled them all out then, but know there has to be an easier way. Was thinking about using a saws-all for the heads. If I do end up drilling again what's the best type of bit? Thanks.
I would use an air chisel on the large ones if you can get a clear shot on them. The air chisel would give a hard, smooth whack on the thing. Its more difficult to get a clean crisp whack with a hand chisel and hammer plus theres the risk of glancing blows with hand tools. If I used a drill, I would go with titanium and use the proper bit oil to keep the bit from over heating and gauling and breaking as a result. You could drill a smaller, pilot hole first then use a larger bit.
I had all the rivets of mine and the donor trucks brackets off in about an hour and a half, but then again, I took the track bar bracket off the donor and center brackets on my 95 when I did the SAS. I just used an air chisel to pop the heads and then swapped bits in the chisel to punch the rest of the rivet out. Went like Butter, just got to keep the chisel trimmed up and sharp!
I had all the rivets to do on the crossmember brackets, and the radius arms. I used a grinder to grind the head off the rivet, then used an air chisel to punch the rest out.
What I do is center punch the rivet head. Then drill small bits all the way through until I am up to about 1/8. One reason is so you know where the center of the rivet is after grinding and because you might want to do more drilling.
Then grind the head off. Then air hammer the rest of the rivet out. Sometimes on the older iron (Fords) you will need to drill a bigger hole to relieve the pressure on the rivet. On some I have drilled it all the way out, using gradual steps in drill size, until only a shell remained of the rivet and then pulled it out with needle nose.
A grinder (if it fits) or a cut off wheel will take a rivet off in no time if your compressor is large enough.
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