[DeTomaso] Fwd: heater valve rebuild seal

[Mike Drew]

Julian,

Yup! I asked Peter for help but he sold his car and the new owner was out of town and couldn’t pull up the paperwork to get the info. Eventually Stephane sorted it out on his own….

Mike

Sent from my iPad

> On Sep 1, 2022, at 15:09, Julian Kift <julian_kift at hotmail.com> wrote:
> 
>    Peter Fenlon in the UK had done all the leg work and determined part
>   numbers to rebuild the heater valves some time back, I think he
>   provided all that info to Larry Stock.
> 
>   Julian
>     __________________________________________________________________
> 
>   From: DeTomaso <detomaso-bounces at server.detomasolist.com> on behalf of
>   Mike Drew via DeTomaso <detomaso at server.detomasolist.com>
>   Sent: Thursday, September 1, 2022 3:00 PM
>   To: De Tomaso Forum <detomaso at server.detomasolist.com>
>   Subject: [DeTomaso] Fwd: heater valve rebuild seal
> 
>   All,
>   Stephane Bergeron in Paris had a leaking heater valve in one of his
>   Panteras. There were several different styles of heater valve used.
>   The Ford parts book shows the different valves in the different
>   drawings but inexplicably only shows a part number for the final
>   version.
>   The later valve uses a push-pull plunger arrangement while (apparently)
>   the earlier ones used a more traditional rotary action, which in my
>   experience doesn't work nearly as well. In fact on both our cars, the
>   early valves are stuck open (they can me forced closed directly, and
>   opened by moving the lever on the dash,mbjt can't be closed with the
>   lever).
>   The later valve is more prone to leaking, I believe, and historically
>   when they failed most a Pantera vendors offered a generic rotary valve
>   as a replacement. But Stephane actually found the exact seal which has
>   a standard part number, so now anybody can rebuild their heater valves.
>   See below:
>> Subject: Re: heater valve
>   (1)
>   Here's a picture of the cracked seal hence the leak around the M4
>   shaft.
>   The outside diameter of the seal is 9.5mm or...3/8"
>   Hope we can find this type of lip seal.
>   For info it has no spring inside like big lip seals.
>   For the Panteras I noticed at least 4 different models for the heater
>   valve.
>   The very first ones were Alfa Romeo, but this one is a Ford...
>   Anyone knowing which model, US or European in the early 70's ?
>   And then, today:
>   (2)
>> 
>> FYI I finally found a seal that fits, NBR 4X10X4 making this heater
>   valve fully serviceable, no more leaks :<)
>> 
>> Stephane.
>> 
>> 
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