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Marv
Referring to Doug
Johnson's post about mix boxes that continually leak hot air, there are a couple
of conditions that can cause this.
The older units were
built with the rotating valve shaft bushing installed from the inside. Over
time the bushing could move toward the inside of the valve, and because the
spring sat on top of the bushing, the rotating valve was on longer sealed
against the front cover.
This can be repaired
without removing the valve assembly, by removing the actuating arm and
spring, and pulling forward on the shaft to assure the valve is tight
against the front cover. If there is any doubt that it is seated, use a heat gun
to warm up the front cover while pulling on the shaft.
Next install the (no
charge) spring kit #596, this will keep the valve seated against the
front cover.
The foregoing will
fix the problem ---IF--- the plastic face on the rotating valve is smooth and
not warped.
If the valve
face is damaged it will require a new Teflon piece be installed
on the valve.
If this is the case,
call us for more information
Ross
Connell
541-923-2244
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