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Spica thermostatic actuator

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Janne Rosti

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Oct 22, 2002, 1:14:10 AM10/22/02
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Has anyone of you ever examined the Spica thermostatic actuator? I have one
that has probably lost some of its expanding material and therefore fails to
operate correctly. Professional remanufacturing is not an realistic option
since here in Finland I can get decent pair of DHLAs and manifold to replace
Spica with same amount of money. The pump works otherwise nicely, delivers
even amount of fuel from each chamber (tested) and does not leak. What is
the expanding material inside the thermostatic actuator? Ethanol? Mercury?
or something more special... Has anyone of You done this refilling on your
own?

Other problem is the microswitch that lies under the pump. It is broken
(lever inside the switch in two pieces...) and I haven't found any other
substitute for it than original Crouzet 83.132 030

http://www.crouzet.com/OLC/PDF/FRA_1048.pdf

So far I have been unsuccessful to acquire one or find second source part
from other manufacturer. Any succestions? The attachment hole distance is
somewhat non-standard?

Some may suggest to me change from Spica to carbs. I dismantled the Spica
pump few months ago. As I tried to find out the functionality of it I was
thrilled about the complexity and genius of that lever system. One has to
honour the engineers who designed the '3D-cam' with 60's tools just pen and
paper (no CNC machines or CAD tools).

BR. Janne

PS. It took about one week to get the Spica back together, correctly....


Brian Shorey

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Oct 22, 2002, 3:05:51 AM10/22/02
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> even amount of fuel from each chamber (tested) and does not leak. What is
> the expanding material inside the thermostatic actuator? Ethanol? Mercury?
> or something more special... Has anyone of You done this refilling on your

The fluid is glycol (antifreeze).

bs


Leslie Wong

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Oct 29, 2002, 7:45:15 PM10/29/02
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"Janne Rosti" <remove.this...@and.this.too.luukku.com> wrote in
message news:10352636...@news.vaisala.com...
There is an DIY (Do It Yourself) Thermostatic Actuator Repair article that
might help you at this link:

http://www.geocities.com/motorcity/downs/3837/ta_diy.html

Also, at the US eBay site, I often see entire Spica pumps for auction. There
are several there now.

Good Luck.

Leslie Wong


Tai Pan

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Oct 30, 2002, 6:13:11 PM10/30/02
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In the U.S, International Auto Parts www.international-auto.com .
Remanufactured, $185 USD + $100 refundable core charge. I used one until I
converted to Webers. It worked fine. Still have it.


"Janne Rosti" <remove.this...@and.this.too.luukku.com> wrote in
message news:10352636...@news.vaisala.com...

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