one thing, its not an "O" ring, its a flat ring. Don't be fooled into
thinking the old one was just squished flat. Mind you, that's not to
say an O ring won't work..

alistair
On 1-Apr-11, at 12:59 PM, HotelWestfalia wrote:

> Yup, it has those spiral, screw kind of plastic inside.  I think, it
> has
> something to do with the even distribution of the coolant.  Use
> Right Stuff
> to seal the valve.  Sometimes the O ring is not quite enough.
> Zoltan
>
> ----- Original Message -----
> From: "Ray Brubaker" <rayandmerle@GMAIL.COM>
> To: <vanagon@GERRY.VANAGON.COM>
> Sent: Friday, April 01, 2011 12:20 PM
> Subject: Plastic noodles in cooling system, '90 Wolfsburg TDI
>
>
>> Hi,
>>
>> I had a leak at the rear heater that turned out to be the o-ring
>> where the
>> control valve is bolted to the core flange. When I opened it up I
>> found
>> pieces of white plastic caught in the control valve that look like
>> twisted
>> flat noodle about 3/16" wide. Where could this have come from? Is
>> it of
>> any
>> concern? The pieces are very brittle so I don't think it would hurt
>> the
>> pump
>> if it got that far. This van has an ALH TDI diesel engine.
>>
>> Thanks for any advice, a great list,
>>
>> Ray
>>