![]() ![]() It sort of looks like a pinion gear, like a tiny pineapple kind of.īTW, what might be the most excellent advice given already, don’t hesitate to give this problem to your local auto-machine shop. I forget what that tool is called, but it comes with the bolt extractors usually. That way when I drill on the bolt, the drill starts close to the center line of the bolt rather than walking around all over the place. ![]() Removing broken bolts: I have best luck if I use a special tool that goes into the drill that sort of grinds a concave indentation in the center of the bolt. I think Harbor Freight sells a pin tool similar to the one I made, only it is more adjustable. I presume those holes are there just so you have a way to hold it still while turning the bolt. I screwed in some bolts that fit a couple of holes in the HB. When I had to remove & replace the HB from my Corolla’s crankshaft, I made my own pin tool out of a piece of 3/4 inch plywood. OP, are you going to have problems with the crankshaft turning while trying to remove the broken bolt? If that’s the case, suggest to wait until you have secured the proper tool to hold the crankshaft in place before attempting this further. Any ideas/suggestions would be greatly appreciated. Anyone have any ideas/suggestions to get this thing out? I have considered drilling the center out progressively bigger until I could get something in there to back the bolt out, and I am not sure I could get a bolt extractor down in the hole and then turn the thing to back it out. There appears to be abut 1/2 - 3/4 of an inch of space on the other end of the broken bolt. I tried to feel for threads with the crank bolt itself, and t appears to be where the crank threads start. And, to make things worse, it turns out the bolt is made of pewter and is about 3-4 inches in the crank. The bolt broke at the bottom where the threaded part started. Now, this bolt had threads at the top to turn the bearing, a shaft, and then about half inch but no more than 3/4 inch of thread at the bottom to thread into the crank and a long shoulder in between. I got the pulley down where the balancer and crankshaft started turning, so I held the box end wrench steady as I snugged the bearing to make sure it had bottomed out when the bolt broke down in the crankshaft. I was installing the balancer, had a box end wrench just holding the bolt that screwed into the crankshaft and an adjustable wrench turning the bearing nut to push the pulley back on. No one in town carried the tool to reinstall the thing, so I ordered a tool from Amazon. Everything went good until I tried re-installing the harmonic balancer. ![]() I was changing the timing belt on a 2005 PT Cruiser. ![]()
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