throw them away and use !/4 NPT hardware store ball valves. For a couple
of dollars each all (most?) are teflon and I've never had a problem with
them yet. They don't depend on any grease and they don't seem to
gradually become hard to turn. A reminder for early kits - there was a
bulletin to drill out the port to 1/4" on the early MAM valves...
Common Buna o-rings are supposed to be OK with mogas and can take a bit
lower temperature but I now use viton o-rings when I can get them.
Ken
Clay Smith wrote:
Hi Guys,
Has anyone had problems with their MAM supplied fuel shut-off valves leaking. The valves did see some mo gas during the fuel flow test only but now a year later after burning only av gas they won't completely shut the fuel flow off. Can they be repaired? Are there "O" rings inside? I'll be close to ACS in California for the next couple of weeks and could pick-up some new valves. Any suggestions for a ACS valve that could easily replace the MAM valve? I might pick up some "O" rings for my leaking quick drains too.
Thanks for your help
Clay
Reb 460
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