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                           LycomingEngines-List Digest Archive
                                      ---
                     Total Messages Posted Tue 08/22/06: 3
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Today's Message Index:
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     1. 02:52 AM - Re: Vacuum Pump Removal  (Grant Piper)
     2. 05:52 AM - Re: Vacuum Pump Removal  (PGLong)
     3. 02:37 PM - Re: Re: Vacuum Pump Removal  (Grant Piper)
 
 
 
________________________________  Message 1  _____________________________________


Time: 02:52:46 AM PST US
From: "Grant Piper" <grant.piper@bigpond.com>
Subject: Re: LycomingEngines-List: Vacuum Pump Removal

Hi Pat,

What you did is right.   If you remove the gear and adaptor you will 
need a double plate to keep oil pressure.

Grant Piper
RV-4 VH-PIO
250hrs
  ----- Original Message ----- 
  From: PGLong@aol.com 
  To: lycomingengines-list@matronics.com 
  Sent: Tuesday, August 22, 2006 10:02 AM
  Subject: LycomingEngines-List: Vacuum Pump Removal


    
  I'm removing my vacuum system because I installed a Tru Trak ADI Pilot 
II. After struggling with the lower left nut, I finally got the vacuum 
pump off. Then, I just installed a cap and gasket in its place but I'm 
wondering if I should also remove the adapter and the vacuum pump driven 
gear and then put the cap on. What is the correct way to do this?

  Pat Long
  PGLong@aol.com
  N120PL
  RV4
  Bay City, Michigan
  3CM

  Do Not Archive


________________________________  Message 2  _____________________________________


Time: 05:52:54 AM PST US
Subject: LycomingEngines-List: Re: Vacuum Pump Removal
From: "PGLong" <PGLong@aol.com>

--> LycomingEngines-List message posted by: "PGLong" <PGLong@aol.com>

Please explain why I would need a double plate to maintain oil pressure?

--------
Pat Long
RV-4, N120PL
Bay City, MI


Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=56317#56317


________________________________  Message 3  _____________________________________


Time: 02:37:34 PM PST US
From: "Grant Piper" <grant.piper@bigpond.com>
Subject: Re: LycomingEngines-List: Re: Vacuum Pump Removal

--> LycomingEngines-List message posted by: "Grant Piper" <grant.piper@bigpond.com>

Hi Pat,

I'm thinking back to when I put an inverted oil pickup on the vac pad.   I 
left the cast spacer on and removed the drive gear.   An oil gallery for the 
gear came up from the bottom.   I put a 0.025" plate between the cast spacer 
piece and the accessory case (to block the oil gallery), and then a 0.25" 
plate on the outside tapped to accept the AN fitting.    I may have given 
you duff gen, if you put the blocking plate right against the acc. case and 
remove the cast spacer piece altogether  then you won't need two plates. 
The mounting studs will be quite long though.   I did this some time ago, 
but I think this is the correct version!

Grant

----- Original Message ----- 
From: "PGLong" <PGLong@aol.com>
Sent: Tuesday, August 22, 2006 10:52 PM
Subject: LycomingEngines-List: Re: Vacuum Pump Removal


> --> LycomingEngines-List message posted by: "PGLong" <PGLong@aol.com>
>
> Please explain why I would need a double plate to maintain oil pressure?
>
> --------
> Pat Long
> RV-4, N120PL
> Bay City, MI
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=56317#56317
>
>
>