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From: randy snarr <randylsnarr@yahoo.com>
Subject: Re: [LML] Re: Electrical /Hydraulic system questions lancair235/320
X-Original-To: Lancair Mailing List <lml@lancaironline.net>
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Chris,
Not sure on either question.
The pump came with the kit from 1987.
I sent the thing back to oildyne years ago and had it
gone through.
I will check the pressure on the down side during
retraction next time I fly and let you know.

Thanks!!!

Randy.

--- Christopher Zavatson
<Christopher.Zavatson@baesystems.com> wrote:

> Randy,
> The pressure rise in the high side with increasing
> OATs is normal. 
> Rising pressure in the low side is not.  
> It sounds like the back pressure circuit is not open
> to allow expanding
> fluid in the low side to flow easily back to the
> reservoir.  A few
> questions:  What is the pressure in the down side
> circuit during a gear
> retraction?  You reported a 0 reading in the low
> side after takeoff. 
> Does the pressure bleed back down to zero after
> retraction or is it zero
> during the entire retraction sequence.  Also, do you
> know what vintage
> your pump is?    
> Chris
>  
>  
>  
>  
> Chris Zavatson
> N91CZ
> 360std
> www.N91CZ.com
> 
>  
> 



 
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