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techtalk:ih:engmech01a [2018/05/16 21:19] hippysmack [Sprocket Cover Dowel Hole (Case) Repair] |
techtalk:ih:engmech01a [2023/12/19 22:40] hippysmack [Sprocket Cover Dowel Hole (Case) Repair] |
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| ====== IH: Engine Mechanicals - Sub-01A ====== | ====== IH: Engine Mechanicals - Sub-01A ====== | ||
| ====== Sprocket Cover Dowel Hole (Case) Repair ====== | ====== Sprocket Cover Dowel Hole (Case) Repair ====== | ||
| - | Article by Hopper of the XLFORUM ((http://xlforum.net/forums/showthread.php?t=395586)) | + | Article by Hopper of the XLFORUM ((https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/63858-special-tools?t=395586)) |
| * This is a bit of an obscure one but a real pain to fix, requiring several special tools. This was also done with the cases assembled. If had split the cases I could have put them on my mate's milling machine and precision machined them. But because I was too lazy to split the cases and disturb that nice tight, factory original bottom end, I did it the hard way. ((Hopper of the XLFORUM http://xlforum.net/forums/showthread.php?t=395586)) | * This is a bit of an obscure one but a real pain to fix, requiring several special tools. This was also done with the cases assembled. If had split the cases I could have put them on my mate's milling machine and precision machined them. But because I was too lazy to split the cases and disturb that nice tight, factory original bottom end, I did it the hard way. ((Hopper of the XLFORUM http://xlforum.net/forums/showthread.php?t=395586)) | ||
| * When it came back from the aircraft welder it looked like the pics below. | * When it came back from the aircraft welder it looked like the pics below. | ||
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| | {{:techtalk:ih:engmech:sprocket_cover_dowel_hole_repair_5_by_hopper.jpg?direct&400|}} ((photo by Hopper of the XLFORUM http://xlforum.net/forums/showthread.php?t=395586)) | | | {{:techtalk:ih:engmech:sprocket_cover_dowel_hole_repair_5_by_hopper.jpg?direct&400|}} ((photo by Hopper of the XLFORUM http://xlforum.net/forums/showthread.php?t=395586)) | | ||
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| + | * In the final fit up, I made custom dowel pins and fitted them with a small file and some bearing blue so they are tight as tight and wont work loose again. | ||
| + | * I also drilled and tapped that top stud out to 5/16 for more strength and also plan to add a steel angle bracket from the top of the sprocket cover to the two bolts on the top of the gearbox near rear mounts. SOB will not move ever again!! | ||
| + | * I still had to strip the gearbox and replace those bearings that had been welded right next to. | ||
| | Using an electric drill (and proceeding very carefully), came up looking like this. ((photos by Hopper of the XLFORUM http://xlforum.net/forums/showthread.php?t=395586)) || | | Using an electric drill (and proceeding very carefully), came up looking like this. ((photos by Hopper of the XLFORUM http://xlforum.net/forums/showthread.php?t=395586)) || | ||
| |{{:techtalk:ih:engmech:sprocket_cover_dowel_hole_repair_6_by_hopper.jpg?direct&400|}}|{{:techtalk:ih:engmech:sprocket_cover_dowel_hole_repair_7_by_hopper.jpg?direct&400|}}| | |{{:techtalk:ih:engmech:sprocket_cover_dowel_hole_repair_6_by_hopper.jpg?direct&400|}}|{{:techtalk:ih:engmech:sprocket_cover_dowel_hole_repair_7_by_hopper.jpg?direct&400|}}| | ||
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