Yes, the M117 is "double throw", just like the OM617, etc.

On Mon, Jul 2, 2012 at 1:39 PM, Fmiser <[email protected]> wrote:

> > Jaime Kopchinski wrote:
>
> > The method in the manual really works... when you remove the
> > thermostat, you get lots of flow and lots of stuff clears up.
>
> Just for reference, since there are a lot of OM616 and OM617
> motors on the list, removing the thermostat is NOT a good plan.
> I don't remember the M117 so it may be a "single throw" - but
> the diesels are a "double throw" design.  That is, when the path
> to the radiator opens, the bypass is closed.  Simply removing
> the thermostat will leave both open and will NOT WORK
> correctly.  For these, you must use a modified thermostat that
> is jammed open.  I used a piece of brake line split and the
> wrapped around the center shaft to hold it open.
>
> --       Philip
>
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-- 
OK Don
2001 ML320
2012 Passat TDI DSG
1997 Plymouth Grand Voyager
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