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Subject:pressure bleeding the coolant system
From:Stephen Davis
Date:Tue, 14 Apr 1998 21:43:47 -0400

> Darrell wrote:
>
> >>   The following setup using a bike tire pump seems to over come some of
>  the problems that can develop when flushing, or replacing   coolant in the
>  cooling system on our water cooled vans. <<

 Hey Volks
        Thanks to Darrell I tried this system on my van this weekend after I messed up a Bentley procedure
with a air locked waterpump.  I had to pump up the system and refill the tank a number of times but coolant
did come out the radiator.  Then I started up the van, put it up on ramps and checked the system ala Bentley.
 Only a little air in the system and that came right out after the van had warmed up enough to open the
thermostat.  There is a little air in the left hand tank in the back which I can't get out because of the
internal reinforcements in the plastic molding, I hope that is alright.  I found that a zefal
press-and-twist-the-lever mt. bike pump fit right on the cap nipple.  I also used a high quality Silica track
pump with built in gauge to monitor the pressure I was adding to the system.  I never approached the 1 bar
level that the system is designed to run at.  I drove the van to work today (22 mi at 65 mph) and the temp
looked fine and I had heat.  Are there any other symptoms that I should be aware of for air in the system?
Lets hope I haven't offended the vw gods by sharing my good news.

Later,
Stephen Davis

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