Jeffds1360 Posted October 16, 2021 Report Share Posted October 16, 2021 Woosh....what is that noise?? Squeeking rattle at engine revolution related. Gently, at low revs back home (2 miles away)........Damn dynamo nut has disappeared, making pulley and fan flop about! Washer lying on chassis rail! I have had a 'noise from that area and as the dynamo is 'new' I thought my water pump was on the way. Pleased it happened really because after replacing the nut, as all is now sweet and quiet :) Anyone got a spare 9/16 nut ( I've used my last one!) and do you know what to torque it too? Do I just gently jam the fan blades to tighten? Link to comment Share on other sites More sharing options...
mishmosh Posted October 16, 2021 Report Share Posted October 16, 2021 The setting is “qt”. Quite tight”. Yes just jam the blades but don’t damage them as you may get an inbalance 1 Link to comment Share on other sites More sharing options...
daverclasper Posted October 16, 2021 Report Share Posted October 16, 2021 (edited) They normally seem to self tighten in use? Edited October 16, 2021 by daverclasper Link to comment Share on other sites More sharing options...
NonMember Posted October 16, 2021 Report Share Posted October 16, 2021 7 hours ago, Jeffds1360 said: Do I just gently jam the fan blades to tighten? I think the officially approved method, since the fan has only a very thin contact with the woodruff key, is to hold the pulley by wrapping some rope round it and clamping the ends in a vice. The rope grips the pulley better than a fan belt because you can twist it to get really tight, then the pulley holds the woodruff key and hence the shaft, allowing you to tighten the nut properly. Link to comment Share on other sites More sharing options...
Jeffds1360 Posted October 16, 2021 Author Report Share Posted October 16, 2021 1 hour ago, daverclasper said: They normally seem to self tighten in use? not mine! I had a small rumble first, then the clankety rattle. The pully was on its way off, the fan was loose. Pity I had not thought to carry some spare nuts in the car...... surprised it happened as the washer is sprung ! Link to comment Share on other sites More sharing options...
PeteH Posted October 17, 2021 Report Share Posted October 17, 2021 9 hours ago, Jeffds1360 said: surprised it happened as the washer is sprung ! Back in the day, when I was "on the tools" we where warned never to re-use "second hand" spring washers?. Under service conditions they can back off, certainly often enough to give concern. Like never re-using "stiff nuts" either. OR (somewhat surprisingly to many) Don`t grease Wheel Nuts!, just torque and then check after 50 miles or so. Pete Link to comment Share on other sites More sharing options...
JohnD Posted October 17, 2021 Report Share Posted October 17, 2021 The amount that a spring washer is compressed must be a long, long way from the yield point! Link to comment Share on other sites More sharing options...
Pete Lewis Posted October 17, 2021 Report Share Posted October 17, 2021 after many years on torque control problems spring washers in the late 70s 80s were found to be totally useless even nylocs and similar dont help much a good washer a plain nut done to a specified torque( decent tightness) dont let torque let you think its something special works better for longer than all the lets mask the problem loose nuts as for a dynamo nut a good call for a impact gun would work so easiliy if you happen to have one if you havnt get it on your wish list if you dont have a torque meter this is very versatile form places like amazon 1 Link to comment Share on other sites More sharing options...
Jeffds1360 Posted October 21, 2021 Author Report Share Posted October 21, 2021 I ordered a 7/16 UNF half, locking, nut, two in fact, cost £1.94 with free postage for the pair. https://www.ebay.co.uk/itm/371571724857?var=640590041693 Doesn't fit Thread all wrong. So..... searched about and found prices for NT607041 varied from 49p to £1.02 BUT..... postage was between £5 and £10 !!! Think I will wait until I need something else as I'm not paying that !! Link to comment Share on other sites More sharing options...
poppyman Posted October 21, 2021 Report Share Posted October 21, 2021 20 minutes ago, Jeffds1360 said: I ordered a 7/16 UNF half, locking, nut, two in fact, cost £1.94 with free postage for the pair. https://www.ebay.co.uk/itm/371571724857?var=640590041693 Doesn't fit Thread all wrong. So..... searched about and found prices for NT607041 varied from 49p to £1.02 BUT..... postage was between £5 and £10 !!! Think I will wait until I need something else as I'm not paying that !! C L R Fixings Ltd Directions Save 5.03 Google reviews Fastener supplier in Washington, England Address: 10 Faraday Cl, Washington NE38 8QJ Hours: Open ⋅ Closes 5PM Phone: 0191 417 7483 Try a place like this Jeff, i have one near me ( Trent fastenings) and they are really helpful. You will be amazed at one you can get. There will be a firm near you Tony. 1 Link to comment Share on other sites More sharing options...
Jeffds1360 Posted October 22, 2021 Author Report Share Posted October 22, 2021 Fixed it thanks, gentle thread file and a clean with a die got it started. Then spent an hour gently sorting fan blades. Spins sweetly now. ...more spares for the box oh oh ooh, one more post for a thousand !!! Link to comment Share on other sites More sharing options...
DVD3500 Posted October 22, 2021 Report Share Posted October 22, 2021 I love that! I had a heck of a time find a torque wrench with the units I needed. I have go back and forth between Imperial and Metric so this sound good! Link to comment Share on other sites More sharing options...
Jeffds1360 Posted October 22, 2021 Author Report Share Posted October 22, 2021 I guess that reply is about Pets torque meter ? 40 odd quid from Amazon. It will be my Xmas pressy from eldest daughter Link to comment Share on other sites More sharing options...
PeteH Posted October 22, 2021 Report Share Posted October 22, 2021 The other mistake some people make is not unloading the torque spanner after use. Ours used to be re-calibrated every few weeks too. If you have 2 torque wrenches it`s worth an occasional check on the same fastener. Crude but it works as a guide. My "big" one goes to 360 lb/ft. For truck work. Pete Link to comment Share on other sites More sharing options...
Jeffds1360 Posted October 22, 2021 Author Report Share Posted October 22, 2021 Breaker breaker... 10 4 good buddy, we got ourselves a convoy Link to comment Share on other sites More sharing options...
daverclasper Posted October 22, 2021 Report Share Posted October 22, 2021 (edited) 1 hour ago, Mathew said: The other mistake is not stopping when it clicks Very Interested, especially for the crucial setting. Do you mean it will keep on tightening after the first click?, as even if it reset it's self, would it not click again straightaway at the original torque setting?. Dave Edited October 22, 2021 by daverclasper Link to comment Share on other sites More sharing options...
PeteH Posted October 22, 2021 Report Share Posted October 22, 2021 2 minutes ago, daverclasper said: Very Interested. Do you mean it will keep on tightening after the first click?, as even if it reset it's self, would it not click again straightaway at the original torque setting?. Dave In effect? Yes. If it`s like my venerable Britool torque wrench, then yes after the "click" the tool is then just a bar! IF however you back it off and tighten then it will click again on Link to comment Share on other sites More sharing options...
daverclasper Posted October 22, 2021 Report Share Posted October 22, 2021 (edited) 21 minutes ago, PeteH said: In effect? Yes. If it`s like my venerable Britool torque wrench, then yes after the "click" the tool is then just a bar! Thanks. So were ok, gradually going around different torque fastenings (eg CH) until one clicks, then back off the spring to carry on, until another fastening clicks, and then back off again, and continue like this?. To maybe sum up, after a click, always back off, to loosen spring to continue with any remaining fastenings?. Edited October 22, 2021 by daverclasper Link to comment Share on other sites More sharing options...
PeteH Posted October 22, 2021 Report Share Posted October 22, 2021 10 minutes ago, daverclasper said: Thanks. So were ok, gradually going around different torque fastenings (eg CH) until one clicks, then back off the spring to carry on, until another fastening clicks, and then back off again, and continue like this?. To maybe sum up, after a click, always back off, to loosen spring to continue with any remaining fastenings?. Pretty much. The first C-B`s to hit the UK, illegal imports form the USA, caused a couple of near miss accidents, as the frequency used was the same as that used by Radio control models (27mghz). https://www.google.com/search?client=firefox-b-d&q=cw+mccall+convoy Spawned the Film with Kris Kristofferson. Ali McGraw was quite tasty. Pete Link to comment Share on other sites More sharing options...
Jeffds1360 Posted October 22, 2021 Author Report Share Posted October 22, 2021 I had a legal one for many years in the 80s, my austin maxi made a great ground plane. Cost a tenner for the licence! "Double Top" was my handle, I kept missing the treble on darts night Link to comment Share on other sites More sharing options...
daverclasper Posted October 22, 2021 Report Share Posted October 22, 2021 (edited) 2 hours ago, PeteH said: Pretty much. The first C-B`s to hit the UK, illegal imports form the USA, caused a couple of near miss accidents, as the frequency used was the same as that used by Radio control models (27mghz). https://www.google.com/search?client=firefox-b-d&q=cw+mccall+convoy Spawned the Film with Kris Kristofferson. Ali McGraw was quite tasty. Pete Thanks, but what has that to do with the the price of "big end washers"?😊 Edited October 22, 2021 by daverclasper 1 Link to comment Share on other sites More sharing options...
Pete Lewis Posted October 23, 2021 Report Share Posted October 23, 2021 if you want to re torque a nut/bolt it must be backed off 1/2 turn and then retorqued as the friction or the fixing has to be overcome and that means you now overtighten on the retorque its std practice to just back a nut slightly so on retorque you dont over do it pete Link to comment Share on other sites More sharing options...
PeteH Posted October 23, 2021 Report Share Posted October 23, 2021 23 hours ago, daverclasper said: Thanks, but what has that to do with the the price of "big end washers"?😊 Not a Lot!.🤣. But Jeff, Started it!.😁 Pete Link to comment Share on other sites More sharing options...
Jeffds1360 Posted October 23, 2021 Author Report Share Posted October 23, 2021 ??? Started what braker became breaker became cb, reverted to torque and that related to tightening my dynamo nut......so.....where the heck do "big end washers" come in...??? My post si I cab wander ( not washer) where I want I mean wander where I want.... I 🤔 1 Link to comment Share on other sites More sharing options...
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