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Loose Cylinders

 
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cpayne(at)joimail.com
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PostPosted: Sun Nov 09, 2008 3:21 am    Post subject: Loose Cylinders Reply with quote

Loose cylinders occur on Huosai engines as well as the M-14 variety too. However, the root problem often turns out to be loose CYLINDER STUDS, not just nuts. They appear to "back out" while the nut looks intact with tab bent over correctly.

The Chinese type are solid while the Russian type is semi-hollow. The fix I use on Huosai's is to install the Russian type. In a pinch, use Lock Tight on the Chinese studs after cleaning out the case threads with carb cleaner and drying the threads. Also be sure to install a new gasket and cylinder O-ring on the cylinder as well.

Of course when the cylinder is off, it's then a good time to ..... well you know, it gets worse from there.


Craig Payne
cpayne(at)joimail.com (cpayne(at)joimail.com)



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dougsappllc(at)gmail.com
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PostPosted: Mon Nov 10, 2008 12:54 pm    Post subject: Loose Cylinders Reply with quote

Loose Studs:
Yes the studs are moving inside the nuts. The way to correct the problem is to remove all the studs for that cly, send them out to be crack checked. This is important because after the repair is done if a stud breaks it is a bugger to get it out. After you are sure your studs are good, send them out to have the threads copper plated on the bottom half of the stud only, (the portion which screws into the case). This adds about a thousandths to the dia and the copper is soft so it helps to secure the stud when it's reinstalled. Clean the hole in the case extreamly well, using MEK or some other serious solvent. Use a brush and screw it into the hole to clean out the threads. Once clean, reinstall the stud useing red loctight and let it sit at 72'F for 24 hours before you install and torque the cly.

I have the cyl base nut lock tabs,cyl seals and gaskets in stock if you need them. Used studs only, no new studs in stock at this time.

Please contact me off list to order parts.

Always Yakin,
Doug
On Sun, Nov 9, 2008 at 3:20 AM, Craig Payne <cpayne(at)joimail.com (cpayne(at)joimail.com)> wrote:
Quote:

Loose cylinders occur on Huosai engines as well as the M-14 variety too. However, the root problem often turns out to be loose CYLINDER STUDS, not just nuts. They appear to "back out" while the nut looks intact with tab bent over correctly.

The Chinese type are solid while the Russian type is semi-hollow. The fix I use on Huosai's is to install the Russian type. In a pinch, use Lock Tight on the Chinese studs after cleaning out the case threads with carb cleaner and drying the threads. Also be sure to install a new gasket and cylinder O-ring on the cylinder as well.

Of course when the cylinder is off, it's then a good time to ..... well you know, it gets worse from there.


Craig Payne
cpayne(at)joimail.com (cpayne(at)joimail.com)



Quote:





--
Always Yakin,
Doug Sapp
Phone 509-826-4610
Fax 509-826-3644
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