Tom:
We had to replace a broken valve spring at the racetrack in Seattle by using
this method. While it was on a R16, the process is basically the same. Just
remove all of the spark plugs, and cam followers/buttons (mark their location),
and fill one cylinder with the soft rope while on the downstroke, then compress
the rope to hold those two valves in place. We used a large socket and rubber
mallet to remove & replace the keepers. Just make REAL sure you get the keepers
back in correctly. We tapped lightly but firmly with the rubber mallet only on
top of the valve to reseat the keepers AFTER the rope was removed. Hope this
helps. Take your time. Good luck.
Dan & Susan
> Hi list,
>
> I've finally got enough courage up to replace my valve seals on a U20. I do
> not have a air compressor and so some have suggested doing the old rope in
> cylinder trick to do the replacement. Would I have to create any special tool
> for the job to relieve the keepers on the stem ends? Does anyone have
> experience along this line? Any precautions I should know about? I just hate
> to take the head off and seals are cheap. If any one out there can give me a
> few tips I'd appreciate it.
>
> Thanks,
> Tom Prather 69/U20 lady in red
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