| Re: How to get the crank hub back on. |
Subject: Re: How to get the crank hub back on. by Notorious on 2008/3/8 2:31:47 At this point you need to pull it back off and figure out what's wrong. Although it's a press fit, it should not take a ridiculous amount of force to reinstall it. And whatever you do, never use an impact for something like this or with any pulling tool. If you're not careful, you're going to pull the threads out of your crank and then you'll be screwed, blued and tattooed. Once you've removed it again, start from scratch. Did you remove any burrs, rust or any other surface defects from the crank snout and hub's I.D.? Did you lubricate these surfaces with anti-seize lubricant or at least with something? Make your own installation tool but not with crappy ready-rod from a hardware store. Go to a bolt specialty store and get some hardened, grade 8 7/16" NF rod to cut to the required length. While you're there, also get a deep, hardened nut of the same size, and a couple of spares just in case. These are the type of nuts that would generally be used on axle U-bolts. Due to their additional thickness, they will have much more thread contact area. Also get a half dozen or so hardened 7/16" washers. Using a few of these that are well lubed will act as a bearing does in a loading situation like this. Make sure your cut to length rod is threaded deeply into your crank and lube the threads, washers and everything with anti-seize. If everything's been fitted and prepared properly, you can now draw your hub into place with no further issues and without excessive force. Good luck. |
