Matronics Email Lists :: View topic - Master Brake Cylinder

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

Master Brake Cylinder

Matronics Email Lists Forum Index -> Europa-List

View previous topic :: View next topic

Author Message

DuaneFamly(at)aol.com
Guest

Posted: Mon Feb 09, 2009 2:40 pm Post subject: Master Brake Cylinder

Good day All,

  

 I was attempting to bleed my brake system but wasn't having too much luck.  So I pulled my Jamar master cylinder and found that the large seal nearest the  spring was torn to pieces....on BOTH side! I am hoping that this was just an  error in insufficient lubrication when reassembling after I tore the master  cylinder down to clean out the crude that seemed to be left over after the  manufacturing. The part number off the seal is 220-L-4502 along with a 54. If my  resources were correct then this should be made of Buna-N (Nitrile) and is  compatible with my Hydraulic Fluid 41 Mil-H 5606G. The other seal is marked  ADM-45 2110....also Nitrile?

 So here are my questions:

 1) Am I right about the material and the compatibility? 

 2) Is there a source for me to order replacement seals in the US?

 3) Is there a lubricant that I should be using when I reassemble the  cylinders?

 4) Are people still sanding down the outer edge of the white disc to  prevent sticking?

 5) Are builders replacing the spring with a stronger one or adding another  spring?

  

 Thanks in advance for any replies.   

 Mike Duane  A207A

Redding, California

XS Conventional Gear

Jabiru 3300  

Sensenich R64Z N

Ground Adjustable  Prop



 The year's hottest artists on the red carpet at the Grammy Awards.  AOL Music takes you there.

  [quote][b]

- The Matronics Europa-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:

http://www.matronics.com/Navigator?Europa-List

budyerly(at)msn.com
Guest

Posted: Mon Feb 09, 2009 3:53 pm Post subject: Master Brake Cylinder

<?xml:namespace prefix="v" /><?xml:namespace prefix="o" /><![endif]-->  Mike,

 Go to www.jamarperformance.com out of  California.  They have all the prices, new seals, etc.  I cleaned mine  first and reassembled.  On one brake I did find a burr, but not  anymore.  Just sand it out I do not care to use hydraulic  fluid which should require buna seals.  Check with Jamar.  I  prefer Dot 5 (silicone) as any leaks do not create a mess on the interior or  exterior and there is no problem with seal compatibility.  The problem is  that it is tougher to bleed because the bubbles don't move by fluid  movement easily.  

  

 Technique on bleeding (once you get your new seals):  Get a syringe  which holds about 4 oz of fluid.  Any type of pressure container will do,  as long as it will not inject air into the fluid when compressing.   Put a 1/8 - 3/16 hose (I use urethane) on it and attach to the brake  caliper.  Open the valve and push the fluid up.  Mild pressure of a  couple psi is all it takes.  You have to have good fittings on your  syringe because the fluid is slick and if the hose pops off it will go  everywhere.  Rotate the brake master on its side and rock it so the cross  hole will allow air to go into the reservoir chamber and up to the  reservoir.  It's 30 minutes for the first one and 3 for the second  side.  I always make my brake master the highest point in the pressure  side to eliminate air bubble chasing.  The reservoir needs to be about 3-6  inches above the masters.

  

 Bud Yerly

 Custom Flight Creations

 Europa Dealer.

 [quote]   ---

- The Matronics Europa-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:

http://www.matronics.com/Navigator?Europa-List

riddon(at)sent.com
Guest

Posted: Tue Feb 10, 2009 12:13 am Post subject: Master Brake Cylinder

Hi Mike.  

   

I had endless problems with the Jaymar cylinders including sticking pistons, problems with bleeding and at one point the failure of one side.  I have thrown them away and replaced them with the Matco ones available from the factory and have had absolutely no problems since.   

   

Richard Iddon G-RIXS  

   

   

-----Original Message-----

 From: owner-europa-list-server(at)matronics.com [mailto:owner-europa-list-server(at)matronics.com] On Behalf Of DuaneFamly(at)aol.com

 Sent: 09  February 2009 22:38

 To: europa-list(at)matronics.com

 Subject: Master Brake Cylinder  

     

Good day All,  

    

   

    

I was attempting to bleed my brake system but wasn't having too much luck. So I pulled my Jamar master cylinder and found that the large seal nearest the spring was torn to pieces....on BOTH side! I am hoping that this was just an error in insufficient lubrication when reassembling after I tore the master cylinder down to clean out the crude that seemed to be left over after the manufacturing. The part number off the seal is 220-L-4502 along with a 54. If my resources were correct then this should be made of Buna-N (Nitrile) and is compatible with my Hydraulic Fluid 41 Mil-H 5606G. The other seal is marked ADM-45 2110....also Nitrile?  

    

So here are my questions:  

    

1) Am I right about the material and the compatibility?   

    

2) Is there a source for me to order replacement seals in the US?  

    

3) Is there a lubricant that I should be using when I reassemble the cylinders?  

    

4) Are people still sanding down the outer edge of the white disc to prevent sticking?  

    

5) Are builders replacing the spring with a stronger one or adding another spring?  

    

   

    

Thanks in advance for any replies.     

   

    

   

  

  

     

No virus found in this incoming message.

 Checked by AVG - www.avg.com

 02/08/09 17:57:00

   [quote][b]

- The Matronics Europa-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:

http://www.matronics.com/Navigator?Europa-List

Trevpond(at)aol.com
Guest

Posted: Tue Feb 10, 2009 3:29 am Post subject: Master Brake Cylinder

Me too Richard,

  

 The original units were totally unacceptable, with sticking and even worse,  lacking the ability to hold the aircraft still when doing pre-takeoff  engine checks.

  

 I bought the new Matco units from the factory and since then, absolutely no  problems;  now have to watch brake applications when landing in case of  lock-ups!

  

 regards

  

  

  

 Trev Pond

 G-LINN

  [quote][b]

- The Matronics Europa-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:

http://www.matronics.com/Navigator?Europa-List

Display posts from previous:

	Matronics Email Lists Forum Index -> Europa-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum