Sender: <marv@lancaironline.net>
To:  lml@lancaironline.net
Date: Wed, 21 Oct 2009 07:47:33 -0400
Message-ID: <redirect-3893455@logan.com>
Received-SPF: pass
 receiver=logan.com; client-ip=65.55.116.80; envelope-from=gt_phantom@hotmail.com
From: GT Phantom <gt_phantom@hotmail.com>
Reply-To: gt_phantom@hotmail.com
Organization: None
User-Agent: Thunderbird 2.0.0.23 (Windows/20090812)
MIME-Version: 1.0
Subject: Re: Re: [LML] LNC2 Hydraulic Gear Operation Fix
References: <redirect-3891105@logan.com>
In-Reply-To: <redirect-3891105@logan.com>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit

Randy,

If your lo side ever exceeds 2000, you either have the WRONG pump or 
either the spool valve or back-pressure relief valve are not functioning 
properly.

I would recommend sending the pump back to Oildyne to have them confirm 
that it is the correct pump for the LNC2 and that all of the components 
are correctly installed and adjusted.

Regards,

Bill Reister


Randy wrote:
> <div class="moz-text-flowed" style="font-family: -moz-fixed">This 
> looks like a relay that when it senses the Hi pressure switch being 
> open, while the gear is up, shorts and closes the Lo pressure circuit. 
> This will bypass the Lo pressure sensor when the sensor opens from the 
> hydraulic fluid expanding. This type of fix does not stop the 
> hydraulic fluid from expanding more and more as it heats up. The 
> hydraulic fluid expansion can damage the hydraulic system. I have 
> monitored this problem and have seen the Lo side exceed 2000 psi 
> during this heat expansion in the summer months.
> If this relay sticks the Lo sensor circuit will be on all the time 
> regardless of the pressure sensor.
> The ONLY way to approach this work around for the Oildyne pump problem 
> is to REMOVE the pressure from the Lo side. Relieving the expanding 
> hydraulic fluid and put it back in the reservoir where it belongs!!!!
> This type of "Fix" that simply bypasses the open Lo sensor and does 
> not relieve the expanding hydraulic fluid is insane and it's a ticking 
> time bomb for gear failure!!!
>
> Randy Stuart
> LNC-2
>
>
>
>
>
> ----- Original Message ----- From: "Lorn H Olsen" <lorn@dynacomm.us>
> To: <lml@lancaironline.net>
> Sent: Monday, October 19, 2009 6:18 AM
> Subject: [LML] LNC2 Hydraulic Gear Operation Fix
>
>
>> A module to fix the gear operation failure problem in the LNC2 using
>> the standard hydraulic system is now available.
>>
>> The problem occurs when thermal expansion has caused both HI and LO
>> pressure switches to trip rendering the landing gear hydraulic pump
>> incapable of operating.
>>
>> This module will activate the hydraulic pump motor in the direction
>> selected by the gear switch when both pressure switches have been
>> tripped by high pressure thereby relieving the pressure in the
>> offending side.
>>
>> The module is 2.5" x 1.5" x .75", weighs 2.3 oz. and has two pairs of
>> leads that connect directly to each pressure switch with 1/4" spade
>> terminals. No other wiring is necessary. Price is $250.00 each. Simple
>> installation instructions included.
>>
>> Contact Wolfgang at 248-471-2000 or Wolfgang@MiCom.net
>>
>>
>
>
> -------------------------------------------------------------------------------- 
>
>
>
>>
>>
>>
>
>
> -------------------------------------------------------------------------------- 
>
>
>
>>
>> -- 
>> Lorn H. 'Feathers' Olsen, MAA, ASMEL, ASES, Comm, Inst
>> DynaComm, Corp., 248-345-0500, mailto:lorn@dynacomm.us
>> LNC2, FB90/92, O-320-D1F, 1,650 hrs, N31161, Y47, SE Michigan
>>
>>
>
>
> -------------------------------------------------------------------------------- 
>
>
>
>> -- 
>> For archives and unsub 
>> http://mail.lancaironline.net:81/lists/lml/List.html
>>
>
> </div>
>