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Re: [oletrucks] Heater Control Valves--anyone rebuilt one?

To: J Forbes <jforbes@primenet.com>
Subject: Re: [oletrucks] Heater Control Valves--anyone rebuilt one?
From: Grant Galbraith <trks@javanet.com>
Date: Sat, 06 Jan 2001 11:30:40 -0500
I've rebuilt the one in my '50 a couple years ago. I don't know how similar
it is to your '59. I got the rubber washer from an ad I saw in Hemmings.
The washer was about 12 bucks. It's seem to be the same for a variety of
makes, including my '89 Volvo, maybe you can find a cheaper source, though
I wouldn't try Volvo.  The thermostatic controlled bladder moves very
little in my '50, 1/8 sounds about right. I checked mine by measuring the
thickness at room temp and in the freezer.

Grant
50 Chevy 3100
52 GMC 150

J Forbes wrote:

> The deluxe heater in my 59 extended cab pickup has
> been leaking, so I started messing with my spare
> heater, in the hopes that I can get it to not leak.
> The heater in the truck had a bad control valve, so
> I bypassed it with a mickey mouse plumber's
> nightmare of plastic elbows and heater hose.  I'd
> like to get the temperature valve working in it.
>
> I took apart the spare heater, and checked for
> leaks.  I have an air pressure regulator, with a
> gage on it, and quick disconnect fittings, so I can
> put it in line with the air hose when painting,
> spraying drywall texture, etc.  It also works for
> leak checking, I just set it to about 10 to 15 psi,
> put a nozzle on it, and use it to blow into the
> heater core...while plugging up the other core
> fitting with my thumb, and holding it underwater to
> check for bubbles.  The core didn't leak, but the
> control valve did.  So, I took the valve apart.  It
> has a rubber washer with a nipple in the middle that
> fits around the valve shaft.  The rubber is getting
> dried out, and cracking some, not all the way thru,
> but enough to let it leak.
>
> Where could I get a new washer for it?  Seems silly
> to pay $30-40 for a new valve (missing the
> thermostatic tube, at  that) when I just need a new
> washer...
>
> Also, I put the thermostatic tube in a pot of hot
> water, to see if it moves the gizmo at the
> valve...and it does!  not sure if it's enough
> movement, it goes about 1/8" in water that's close
> to boiling.
>
> Any input welcome.  I'm in digest mode, so if you
> kindly send replies to my email as well as the list
> I'll see them sooner    :)
>
> Thanks,
> Jim F
> 59s in AZ
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959

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