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Hydraulic pump problems

 
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dowens(at)aerialviewpoint
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PostPosted: Mon Apr 09, 2007 7:54 am    Post subject: Hydraulic pump problems Reply with quote

Well, it happend on the last trip. The best thing about these airplanes is they have great systems. My guess is that one of the hydraulic pumps failed in the recent past when a leak occured. The other one failed after a 3.5 hour flight from Arkansas to Hooks airport... A small crack occured at the firewall hardline fitting, and started leaking sometime into the flight... By the time the guys noticed something was wrong, they were about 100 miles out, and the gear was coming down on its own. Pressure was fluctuating from 500 to 700 (accumulator pressure only) which will not allow for gear retraction... Anyways, to make a long story short... The airplane (500-A colemill conversion) has PESCO pumps p/n 1P349L, which came on the plane. PESCO is out of business... Just wondered if anyone out there has a used servicable or yellow tagged pump in stock you want to sell... OR is there a replacement manufactured pump available, and what is it ??? Just throwing this out to all the folks out there who are in the know... THANKS AS ALWAYS!!!!!




David Owens
Aerial Viewpoint
N14AV
AC-500A-Colemill
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kamala(at)MSN.COM
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PostPosted: Mon Apr 09, 2007 8:47 am    Post subject: Hydraulic pump problems Reply with quote

do, there are two facilities in tulsa to overhaul the pump. mason
Quote:
From: "David Owens" <dowens(at)aerialviewpoint.com>
Reply-To: commander-list(at)matronics.com
To: <commander-list(at)matronics.com>
Subject: Hydraulic pump problems
Date: Mon, 9 Apr 2007 10:52:48 -0500

Well, it happend on the last trip. The best thing about these airplanes is
they have great systems. My guess is that one of the hydraulic pumps failed
in the recent past when a leak occured. The other one failed after a 3.5
hour flight from Arkansas to Hooks airport... A small crack occured at the
firewall hardline fitting, and started leaking sometime into the flight...
By the time the guys noticed something was wrong, they were about 100 miles
out, and the gear was coming down on its own. Pressure was fluctuating from
500 to 700 (accumulator pressure only) which will not allow for gear
retraction... Anyways, to make a long story short... The airplane (500-A
colemill conversion) has PESCO pumps p/n 1P349L, which came on the plane.
PESCO is out of business... Just wondered if anyone out there has a used
servicable or yellow tagged pump in stock you want to sell... OR is there
a replacement manufactured pump available, and what is it ??? Just throwing
this out to all the folks out there who are in the know... THANKS AS
ALWAYS!!!!!


David Owens
Aerial Viewpoint
N14AV
AC-500A-Colemill


- The Matronics Commander-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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