Ever since all four capped nuts are tight, kick is showing great healthy resistance, meaning good compression.
--- In Honda-C70@yahoogroups.com, "A" <ak6666666@...> wrote:
>
> Hello Ron,
>
> Your picture of CD70 brought back to me childhood (early 1970s) memories. Yes we had that all Japanese bike. But not even one is seen now.
>
> Here you will see a small pic of the latest CD70 buzzing about here.
>
> http://www.atlashonda.com.pk/cd70.php
>
> Thanks for the links. I did look up chasing and it looks like an excellent method to save the threads.
>
>
> Ali
>
> --- In Honda-C70@yahoogroups.com, "rdwnj" <rdwnj@> wrote:
> >
> > Hello Ali,
> >
> > That link has been there since 2008! See message #22282.
> >
> > Is your CD70 like this?
> > http://www.motorera.com/honda/h0070/cd70.htm
> >
> > Anyway, chasing threads is basically cleaning and checking/repairing threads on nuts and bolts/screws, etc. before reassembling. See
> > http://answers.yahoo.com/question/index?qid=20090318194438AAAHyUJ
> > and
> > http://www.carcraft.com/techarticles/thread_chasing/index.html
> > and
> > http://www.dansmc.com/bolts3.htm
> >
> > Ron in NJ
> >
> > --- In Honda-C70@yahoogroups.com, "A" <ak6666666@> wrote:
> > >
> > > Thanks a lot. This morning it was found that just the capped nut had slipped. A new one was installed and tightened. Om all ok now and it cost hardly anything. Mine is CD70, like your CL 70, without leg shield. Seat, petrol tank then handle bars. No gap between seat and handle bar.
> > >
> > > I also got two foot rubber pads and had it installed with a large wooden hammer.
> > >
> > > While I was there, a nasty nail did wreck my rear tube and I got a new one installed.
> > >
> > > I looked at the manual that you have and like it due to its detail. Can that link be added to links of this group?
> > >
> > > What is meant by 'chasing' the threads? I suspect this prolongs thread life.
> > >
> > > Ali Khan
> > > Pakistan
> > >
> > > --- In Honda-C70@yahoogroups.com, "rdwnj" <rdwnj@> wrote:
> > > >
> > > > Hello ?
> > > >
> > > > Don't know what model C70 (?) you have there, but looking here at US versions, generally there are crowned/cap and regular nuts on the long cylinder stud bolts.
> > > >
> > > > Looking at
> > > > http://f1.grp.yahoofs.com/v1/4LwyTm8PXh8Y3wFXYcWnmDpdTiKgXqv4Kb1t52kiRRP2FY42ujBIAsZ1MsSrUl4Hc_kT67GUM1QRcxdyGrlDqla5qA/C70%20Parts%20Manuals/1983%20C70%20Parts%20Manual.pdf
> > > > in the files section of this group, at the '82-83 C70, page 18 & 19, the cylinder stud bolts 'A' & 'B', part numbers 90031-035-010 & 90032-035-000 are very popular items, used on lots of machines.
> > > >
> > > > The nuts, on page 24 & 25, 90230-087-000 & 94021-06000 are also very popular and should be available for very little money.
> > > >
> > > > First question is what is turning, and what is stationary? Maybe the nut or threads at the top are stripped and the stud is still secure in the crankcase? Maybe the nut is frozen on the stud, and the stud is stripped somehow in the crankcase (that would be bad).
> > > >
> > > > Yes, a torque wrench is good for evenly tightening, in a criss-cross pattern, slowly, when mounting cylinder, head and cover, etc.
> > > >
> > > > You can see good information on tightening in the C50-65-70 shop manual, free here and elsewhere, page 14. Of course I like my site
> > > > http://lostabout.com/c70_65_50_manual/
> > > >
> > > > Since we are talking 6mm bolts, the torque generally should be ~5.8 - 8.7 ft-lbs (90 - 110 kg-cm) more or less, say 7 ft-lbs.
> > > >
> > > > Of course the threads of the bolt and nut where they meet should be clean so that you are not measuring dirt by mistake. Some people clean and lightly oil the threads and go for the higher values. Some, like me, will 'chase' the threads, since I have seen so many nuts and bolts/screws whose threads have been mangled or butchered! :)
> > > >
> > > > Ron in NJ
> > > >
> > > > --- In Honda-C70@yahoogroups.com, "A" <ak6666666@> wrote:
> > > > >
> > > > > Thank you Sir.
> > > > >
> > > > > You have motivated me enough to take corrective action asap, tomorrow morning.
> > > > >
> > > >
> > >
> >
>
1970-73 C70 Honda Service Manual: http://tinyurl.com/6ebwtw
1970-73 C70 Troubleshooting Guide:
http://tinyurl.com/6ebwtw (scroll to sec.7.1 page 101.jpg)
1980-83 C70 Honda Service Manual: http://tinyurl.com/hu42c
1980-81 C70 Troubleshooting Guide:
http://tinyurl.com/hu42c (scroll to sec.18-1 page 170.jpg)
1982-83 C70 Troubleshooting Guide:
http://tinyurl.com/hu42c (scroll to sec. 20-28 page 205.jpg)
1980-81 C70 Maintenance Schedule: http://tinyurl.com/z4zn6
1982-83 C70 Maintenance Schedule: http://tinyurl.com/hw35c
More resources for C70 Passports and Cubs:
http://www.shlaes.com/Vehicles/Scooter.htm
http://www.velodrome.com/HondaC70/HondaC70.html
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