clutch removal question 1970 R75/5
Trying to remove the flat head machine screws from the clutch and Haynes says use impact wrench. Tried that and it immediately snapped off the straight bit and did not budge the screw. I'm guessing not to use penetrating oil, but maybe torch?
Any suggestions?- Now I'm going to try and find a replacement bit after no luck yesterday at 5 different places!
loosening those tight bolts
+1 on heat. I like the idea of the heat gun because it's likely that there is BMW thread-lock you are trying to warm up. I also use thread penetrating oil like Liquid Wrench. Obviously, this can catch on fire when you add heat, so please be careful. In situations like this I like the old school hammer-driven impact wrench shown in the photo above. Use a steel hammer. Part of what you want to do is break the thread lock loose and a steel hammer will transfer a shorter and stronger impulse than a dead blow hammer.
If the impact wrench strips the top of the bolt, I'd suggest moving on to a bolt extractor (e.g. an Easy Out). Use the same routine of Liquid Wrench, heat and absolutely the largest bolt extractor you can use and drill into the bolt with care.
Best of luck. Please keep us updated.