Hi Chaps,
Hope you are all snuggled up in the garage, safe and well.
The bolt of the crankcase oil feed union on my 650SS is not holding torque - must be stripped. Anybody know the thread size so I can get the appropriate helicoil kit? I believe it is 5/16"W - anyone confirm this and tpi?
Many thanks.
old pipe fitting
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Thanks Anna
Thanks Anna, I believe standard 5/16"W is 18 tpi so will go for that helicoil kit. I realise it's a bit of a job to do, which is a bit annoying as I've just rebuilt the bike! It seemed fine when I installed it so don't really understand how this happened. Hey-ho. Cheers, Len
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re oil pipe stud
Hello well were all now inquaenten so you may have six month to do it in and have bit of play time too. Yours. Anna j
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Good luck!
Thanks chaps.
Interesting that BSW helicoil sets are £30 but modern, metric and others are only £10. Economies of scale, I guess?
Anyway, on closer inspection, the original bolt, which I had mindlessly refitted, was a little short (which is why it had stripped) and there was a reasonable thread length beyond it so I found a longer bolt and it seems to have done the trick. That was one of the April fools life threw at me yesterday. The other was a leaky central heating pump joint. So my 5 hours in the garage yesterday got me back to where I started. However, all of that was better than taking the bike to bits again. Result!
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Options
The 650 engines after 114870 had a different arrangement for the oil junction block fastener. Changing from a sleeve nut to a shouldered bolt. p/n 030448. But still 5/16" WW thread.
These can be obtained from Norvil or A/N. The latter for some reason charging nearly 3 times more for a fitting that looks poorly finished.
By E/N 116372 the oil juction block itself had changed to having all its holes in a line. A shape that continued to be used up through the Commando range. Albeit with varying hose connection ends. Attachment shows later block.
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Thanks Philip
Mine is the later one with the three holes in a line, as your photo.
All sorted now, hopefully.
Cheers,
Len
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hello the oil pipe fitting stud in the crankcase is 5/16th Whitworth and you need a recoil kit from Tracey tools you need to drill it out and retap then fit the recoil then your back to 5/16s and you have to remove your engine to do this operation these recoils are very good as I have used one from Tracey Tools hope this may help you yours anna J