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Messages - Kenneth cartwright
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Mk2 Golf Chat / Re: Worst bits
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Technical / Re: High pressure fuel pump not priming (16v K-Jet)
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Other Problems / Re: Fuel leak from pump area
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Other Problems / Re: Fuel leak from pump area
https://www.ebay.co.uk/itm/154225622599?epid=21004180448&hash=item23e8903e47:g:CxsAAOSwhZFfySPs sometimes something like this would come in handy, but tend to manage without.
check all around the pump housing prior to reinstalling, so connect everything back up and then turn ignition on a few times to pressure test the system prior to starting.. when all leaks shown to be fixed then reinstall.
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New Members Say Hi! / Re: New member saying "hello"
https://imgur.com/user/kennethcartwright
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General Chat / Re: Where are you based?
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Mk2 Parts Wanted / Re: K jet pipe clips
https://www.heritagepartscentre.com/uk/191201449-fuel-line-clip.html?gclid=CjwKCAjwgviIBhBkEiwA10D2jxfG2_i5VjH5A3ZJoWI5c8wceYqYDeWVQAewEJ96g2GWLGxFMZrfGRoCVPEQAvD_BwE
https://www.ebay.co.uk/itm/281088543505?mkevt=1&mkcid=1&mkrid=710-53481-19255-0&campid=5338722076&toolid=10001
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I.C.E & Electrical / Re: Horn Intermittent
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Mk2 Golf Chat / Re: Crushed Nuts...
Cheers - Always a good day when you learn something new - 'prevailing torque nuts', one to remember.
Nuts - Yet another massive subject if you're inclined to get into it and once again umpteen different views / opinions / differing facts if you're using Google to check.
Just to use that particular nut as an example - 7Zap gives it as a 'M8 Hex nut, self locking', even has a part number N 90074404 and an aftermarket alternative - Contitech V31213.
So a pretty specifically specced item and presumably for a reason, otherwise VW would be unlikely to take the extra cost needlessly.
One thing I didn't think of, but makes sense when I read it was this type of lock nut will resist heat when nylon lock nuts could melt - don't see that being the rational using them at the servo though.
I'm wondering too are the all metal types single use, if they're pinched before or even after fitting might they not expand again when unthreaded?
God i could bore you silly with nuts and bolts, but why bother. Anyhow, you can use metal ones again although the recommendation is always to replace as the thread will reshape the nut after few uses (cutting own thread)
on the servo the engineer has decided that brakes are important and therefore has picked method /type of lock nut to ensure where that the parts are unlike to come loose unless tooling used.(service)
Nyloc nuts can be used quite safely in those positions, but are definitely use once, as the thread is cut into the plastics, and useful tip when removing such nuts heat the plastics to melting, and the bolt should turn straight out.
Another one to fry your mind is what is the torque setting for such parts as ISO standards have set specific torque ranges for bolts and materials, so if 1 designer says go higher than material spec do you follow designer or material specs.
http://www.chapmanssfs.com/torque-tightening-values-structural-steel-bolts/
maybe i mentioned before but i was meachnaical technician/advisor for Siemens, Alstom, Mitsubishi, and only time we changed from ISO was lower torques, never increasing. for example due to heat expansion, 5" diameter bolts over 1000mm in length would lengthen and snap, if torques too high and the elasticity of the bolt is lost. ive torque tightened bolts in BA,BW, BSF,BSP,UNC,UNF Metric, coarse/fine, using heat, spanners ,hammers, hydrolics ,induction and now i play on cars where i can undo everything with 1/2" drive... nothing heavy at all
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Mk2 Golf Chat / Re: Crushed Nuts...
No not at all just designers / company's idea, as apposed to nylocs try google search for prevailing torque nuts , Inloc, aerotight,
https://www.mscdirect.com/industrialtools/threaded-zinc-lock-nut.html
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New Members Say Hi! / Re: New member
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General Chat / Re: Engine stand...
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Mk2 Golf Chat / Re: Not so obvious service items...
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