Just got done working on the Power Wagon. About 3 weeks ago. I had a brake line in the rear pop. It rusted through. So I replaced the lines then. BUT the the bolts that hold the brake lines in place broke on both sides.
I tried to drill them out before my trip. But the drills bits I had wouldn't put a dent in the broken bolts. So this morning. I when to Fastenal to get some cobalt drill bits. These didn't do anything either.
Ended up using a carbide burr bit on a pencil die grinder.
After burring out the bolts. Ran a drill bit down through the hole. Then retapped the holes. The left side went pretty smooth. The right side. Ahhhh......broke 2 drill bits in the hole.
Used the burr bit to remove the pieces. After that. Retapped and installed the bolt.
Tomorrow, I have to tackle the rear axle locker. It has a flashing light on the dash. If I have to replace the locker assy. That's about $4,000.