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Subject: Fwd: Hydraulic pump cycling / Replacing dump valve
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From: Erik Larson <asw20747@aol.com>
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I have a Legacy, 6 1/2 years, appx 650 hours, we started experiencing momen=
tary hydraulic pump cycling, averaging now every 6-8 minutes for a micro se=
cond.



There are NO external leaks and NO loss of fluid in the system, so I guess =
it's time to start trouble shooting to find the internal bypass.  Following=
 some previous postings on the issue, it seems that if it's not the cylinde=
rs, then the next logical place would be the dump valve.


At first glance it looks like getting the dump valve changed out could be q=
uite a job.  Anyone that's done it recently care to share some Helpful Hint=
s?


It looks like the only way to get to it, is by disassembling the throttle q=
uadrant, even then it looks tight?


Any advise on that or general trouble shooting advise for the hydraulic sys=
tem would be GREATLY appreciated!


Erik Larson
Legacy/N74FX


----------MB_8D042157F4AF875_E90_D29E6_webmail-d288.sysops.aol.com
Content-Transfer-Encoding: quoted-printable
Content-Type: text/html; charset="us-ascii"

<font color=3D'black' size=3D'2' face=3D'arial'><br>

<div style=3D"font-family:helvetica,arial;font-size:10pt;color:black"><span=
 style=3D"background-color: rgb(255, 255, 255); font-size: small; font-fami=
ly: arial;">I have a Legacy, 6 1/2 years, </span><span style=3D"background-=
color: rgb(255, 255, 255); font-size: small; font-family: arial;"></span><s=
pan style=3D"background-color: rgb(255, 255, 255); font-size: small; font-f=
amily: arial;">appx</span><span style=3D"background-color: rgb(255, 255, 25=
5); font-size: small; font-family: arial;"> 650 hours, we started experienc=
ing momentary hydraulic pump cycling, averaging now every 6-8 minutes for a=
 micro second.</span><br>

<div id=3D"AOLMsgPart_1_0851477f-d260-49d1-912b-4fb2f21969ee"><font color=
=3D"black" size=3D"2" face=3D"arial">


<div style=3D"font-size: small; background-color: rgb(255, 255, 255);"><br>

</div>



<div style=3D"font-size: small; background-color: rgb(255, 255, 255);">Ther=
e are NO external leaks and NO loss of fluid in the system, so I guess it's=
 time to start trouble shooting to find the internal bypass. &nbsp;Followin=
g some previous postings on the issue, it seems that if it's not the cylind=
ers, then the next logical place would be the dump valve.</div>



<div style=3D"font-size: small; background-color: rgb(255, 255, 255);"><br>

</div>



<div style=3D"font-size: small; background-color: rgb(255, 255, 255);">At f=
irst glance it looks like getting the dump valve changed out could be quite=
 a job. &nbsp;Anyone that's done it recently care to share some Helpful Hin=
ts?</div>



<div style=3D"font-size: small; background-color: rgb(255, 255, 255);"><br>

</div>



<div style=3D"font-size: small; background-color: rgb(255, 255, 255);">It l=
ooks like the only way to get to it, is by disassembling the throttle quadr=
ant, even then it looks tight?</div>



<div style=3D"font-size: small; background-color: rgb(255, 255, 255);"><br>

</div>



<div style=3D"font-size: small; background-color: rgb(255, 255, 255);">Any =
advise on that or general trouble shooting advise for the hydraulic system =
would be GREATLY&nbsp;appreciated!</div>



<div style=3D"font-size: small; background-color: rgb(255, 255, 255);"><br>

</div>



<div style=3D"font-size: small; background-color: rgb(255, 255, 255);">Erik=
 Larson</div>



<div style=3D"font-size: small; background-color: rgb(255, 255, 255);">Lega=
cy/N74FX</div>

</font>
</div>




</div>
</font>
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