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To felt or not to felt qustion?
:

Valve Oilers on ZA engine

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Roger

10-11-2001 22:33:23




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I had ZTU that had felt waped around each drip point brad for the valve stem lubrication.
On my latest tractor, a ZTU with a ZA 206 engine installed in it, I noticed it has no felt. I watched while the motor ran and all seems ok except for some of the drip points just drip while other ones had a steady stream of oil.
My question is this - Should mine have the felt?
Not sure what purpose the felt might have except for maybe keeping the brads from vibrating and turning on the oil line? Seems like maybe vibration could turn some of the brads thus then the oil drips missing the valve stem altogether.
Or should I just go with the old motto " If it aint broke - Dont fix it! Appreciate any helpful info from Z owners and MM experts. Thanks!

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BMG

10-12-2001 15:14:51




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 Re: To felt or not to felt qustion? - Valve Oilers on ZA engine in reply to Roger, 10-11-2001 22:33:23  
Roger,
My experience has been that the 165 and 206 engines came with the felts originally. Yours may have deteriated over the years. I think your logic is probably right about the nails moving and no longer lubricating the valves. They also may have acted like a restrictor. If the first hole is a stream the fourth one is probably just dripping which may not be enough lube for the valve. The only way I've found to replace the felts is with the cylinders removed so that you can drive the oil tube out the bottom of the cylinders to gain access to the nails. I buy chain saw fuel filters of the same id as the od of lube tube. I remove one end of the tube from the cylinder (cut the tapered end off) and feed the felts onto the tube, push the nails back through their holes, reinstall the lube tube (flaring the end as to provide a seal to the bottom of the cylinder) and readjust the nails over the valves.

Brian

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