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Vacuum Pump Repair

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ferrerg(at)comcast.net
Guest

Posted: Sat Nov 10, 2007 9:43 pm Post subject: Vacuum Pump Repair

I was ready to replace the failed vacuum pump (210 hours) in my RV6 this week.  

  

 But my friend, Rob Kermanj (RV10 and RV6), suggested that I check the operation of the shear coupling in the pump. 

  

 I found out that the shear coupling had sheared and replaced it for about $22 (I was later told that Aircraft Spruce sells it for $14).

  

 It's very easy to replace this part in the pump. The fun part is removing and installing the pump.

  

 The shear coupling is made from some type of plastic that deteriorates with high temperature and time.

  

 I plan to replace this part every couple of years or 200 hours as a preventive measure in the future.

 --

Gabe A Ferrer 

 RV6 N2GX

 South Florida

email: ferrerg(at)comcast.net 

cell: 561 758 8894

  [quote][b]

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Vanremog(at)aol.com
Guest

Posted: Sat Nov 10, 2007 10:55 pm Post subject: Vacuum Pump Repair

In a message dated 11/10/2007 9:44:24 P.M. Pacific Standard Time,  ferrerg(at)comcast.net writes:

  	  Quote: 	
		     I was ready to replace the failed vacuum pump (210 hours) in my RV6 this    week.  

    

   But my friend, Rob Kermanj (RV10 and RV6), suggested that I    check the operation of the shear coupling in the pump. 

    

   I found out that the shear coupling had sheared and replaced it for about    $22 (I was later told that Aircraft Spruce sells it for $14).

    

   It's very easy to replace this part in the pump. The fun part is removing    and installing the pump.

    

   The shear coupling is made from some type of plastic that deteriorates    with high temperature and time.

    

   I plan to replace this part every couple of years or 200 hours as a    preventive measure in the future.

	


 

 ========================

  

 Just a stupid question, but...  maybe it sheared for a reason?  I  would check to see if the vanes are in good condition and not partially  fragged.

  

  

  

 N1GV (RV-6A, Flying 870hrs, O-360-A1A, C/S, Silicon  Valley) 



  [quote][b]

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pitts_pilot(at)bellsouth.
Guest

Posted: Sun Nov 11, 2007 4:39 am Post subject: Vacuum Pump Repair

Vanremog(at)aol.com (Vanremog(at)aol.com) wrote:

  	  Quote: 	
		                 In a message dated 11/10/2007 9:44:24 P.M. Pacific Standard Time, ferrerg(at)comcast.net (ferrerg(at)comcast.net) writes:

    	  Quote: 	
		       I was ready to replace the failed vacuum pump (210 hours) in my RV6 this week.  

     

     	
   

 	
 snip

  	  Quote: 	
		      

   Just a stupid question, but...  maybe it sheared for a reason?  I would check to see if the vanes are in good condition and not partially fragged.

 	
 210 hours is not very much time on a vac pump.  I think their overhaul/replacement time is given as around 500 hours.  However, having said that, and having a couple of different couplers shear, my advice is to order a couple of spares if you're not going to open up the pump and look.  None of my failure causes were were hard to find.  The hardest part of fixing the problem is getting the (at)#$% pump off/on the engine.

 Linn

 do not archive

 [quote]    

    

    

   N1GV (RV-6A, Flying 870hrs, O-360-A1A, C/S, Silicon Valley) 

   

   

   

          	  Quote: 	
		  

	
   

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