[DeTomaso] Stubbon Heater valve removal
JDeRyke at aol.com
JDeRyke at aol.com
Wed Jul 15 14:52:14 EDT 2009
> In a message dated 7/15/09 9:39:42 AM, oldwheel at mts.net writes:
>
> It has become obvious to me that there are at least two distinctly
> different heater valves used in cars produced 1971-74.
>
> Exactly. One valve has a flat steel lever running in a cam-slot machined
> into the top of the brass valve body. The earlier one uses a simple bent
> rod. But I thought they both used the same o-ring, since the actual valve
> guts appear similar. Interesting-
>
> Incidently, Tech Service Bulletin 9, article 77 describes the problem and
> mentions a 'new" heater valve being available in November 1973, p/n
> D36y-18495-A. This is a long-obsolete p/n so don't call Ford for it. This may
> be the later flat-lever style valve- Ford's "fix" for a very long-standing
> problem. Which didn't work on our car, as that was the style that was
> defective on our L model. As I remember, I slightly bent the top of the machined
> brass cam-slot during my rebuild to make the flat lever action a little
> more clean. But being thick brass, it would be VERY easy to crack it,
> destroying the valve, so be gentle if you try this! FWIW- J Deryke
>
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