pacer 3,174 #1 Posted January 11, 2014 (edited) Im doing a pretty major rebuild on a C120 which included a "upper end" rebuild of the K241. Been sitting looong time and valves/rings were stuck but engine was in really good condition with standard specs showing almost no wear. So I didnt remove the crank, just new piston/rings and rod with a valve cleanup/dressing. I did remove the flywheel & windings to get dirtdaubers and rust out. Well, I reassembe and everythings going along smoothly, pretty much... I had an odd clattery (is that a word?) sound rotating it through -- oh well, I'll fire it off and itll go away. It fired right up and ran soooo smooth, but on shut down this clattery? sound was definitely getting worse. OK, I'd better go back in and see whats going on. Taking the tin off around the flywheel and moving the flywheel occasionally I'm thinking - hey, that noise seems to be coming from near the flywheel. Well ... the flywheel falls into my hands and guess what is stuck to a magnet? a small screw! I think, "did I let a screw get stuck there?" I dont even recognize it --- It was one of the 4 that hold the coil plate on! and whoa! the other 3 are loose! Somebody didnt tighten them up on install, now who could've done that?? At least I was by myself and nobody saw my very red face...Like I said, first mistake I ever made.... :roll: No "clattery" sound now, and surprisingly no damage to anything - sneaked by on that one Edited January 11, 2014 by pacer Share this post Link to post Share on other sites
wheelhorse66 10 #2 Posted January 11, 2014 O well at leased nothings damaged,that could have been bad Share this post Link to post Share on other sites
chazm 413 #3 Posted January 11, 2014 Bin there ,Done that.... Good thing is NO harm ..NO file Chasm Share this post Link to post Share on other sites
Lane Ranger 11,069 #4 Posted January 11, 2014 I made a lot of those first mistakes which is why my brother does the motors now! 1 Share this post Link to post Share on other sites
AMC RULES 37,144 #5 Posted January 11, 2014 Sounds like someone was lookin' out for you that day. Share this post Link to post Share on other sites
Rick_in_CT 156 #6 Posted January 11, 2014 Isn't that why they put magnets in the flywheel, to catch the loose parts? During your next service you scoop them up and put them in a jar for your next rebuild project. 1 Share this post Link to post Share on other sites
953 nut 56,774 #7 Posted January 11, 2014 The Lord was looking out for you. Any time someone asks " how did you know that!" I just tell them I have learned by my mistakes, and I know a lot! Share this post Link to post Share on other sites
TT-(Moderator) 1,145 #8 Posted January 11, 2014 Wait 'til you pull a flywheel and find all of the magnets stuck to the stator. 1 Share this post Link to post Share on other sites
KC9KAS 4,742 #9 Posted January 12, 2014 Glad you found the problem and nothing was damaged! Share this post Link to post Share on other sites
smoreau 658 #10 Posted January 12, 2014 (edited) Wait 'til you pull a flywheel and find all of the magnets stuck to the stator. Or the engine locked up from the magnets coming apart and trashing the stator. happened to my 417A a few years ago. Edited January 12, 2014 by smoreau 1 Share this post Link to post Share on other sites
groundhog47 347 #11 Posted January 13, 2014 Bill, persistence paid off again, so glad it wasn't internal, good work Share this post Link to post Share on other sites
