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Re: Europa-List: Jamar finger brakes

Subject: Re: Europa-List: Jamar finger brakes
From: Bud Yerly <budyerly@msn.com>
Date: Tue, 27 Jan 2015 22:23:33

OOH Bill.
Dot 5 is the best for our little aircraft.  Yet I have 5606 in my aircraft.
5606 only works in systems designed for mineral oil based fluid such as 
Matco and Grove systems.  Anything automotive is normally the standard Dot 
3-4-5 types.  Don't mix fluids, ever.
That said:  Flushing out the lines, calipers, park brake and reservoir is a 
chore.  In any flush, if you choose to flush with Dot 5, the silicone can 
get clumpy if you mix it with 5606.  Then you have a disaster.

According to ASA:  Naptha or Varsol are used to flush 5606.  5606 is mineral 
based based so Naptha will keep the seals in the calipers in shape.
In automotive systems where hydraulic fluid is added accidentally to a DOT 
fluid system, alcohol is recommended by automotive sites.  It normally will 
not hurt the caliper seals and it disolves oil based contamination.  Use 
about 20 psi air or more of dry air to blow out the lines and calipers. 
This is messy to say the least.  Wash everything afterwards, the plane, you 
and the interior.

Then go ahead and reassemble the lines and push copious amounts of DOT 5 
through the system calipers and lines into a clear bucket to verify the 
fluid is clean and clear.  Then get the brake system ready for bleeding 
again.  Bench bleed your master or just use my website techniques procedure 
to re-bleed.

That is about all I know.
Regards,
Bud Yerly


-----Original Message----- 
From: William McClellan
Sent: Tuesday, January 27, 2015 7:20 PM
Subject: Re: Europa-List: Jamar finger brakes


Bud,
I had to get a new set of plungers and seals as I ruined the last set in the 
Jamar cylinder by usingthe 5605 fluid Grove recommends.  So now I need to 
drain an clean the rEst of the lines to use the silicone DOT 5 fluid.  Do 
you have a recommendation for what to use to flush the MIL-5606 out.  I 
don't think I want to mix the DOT 5 with the 5606 residue.
Thanks,
Bill


-----Original Message-----
>From: Bud Yerly <budyerly@msn.com>
>Sent: Jan 21, 2015 6:13 PM
>To: europa-list@matronics.com
>Subject: Re: Europa-List: Jamar finger brakes
>
>
>Bill,
>Go on my website www.customflightcreations.com and download the bleeding
>procedure in the Techniques section.
>For your setup use only Dot 5 (not 5.1) and it works with everything as its
>silicone.
>Read the bleeding procedure for the Jamar.  Then loctite in the Allen head
>pivot bolts because they do eventually loosen and you are blessed with one
>brake handle in your hand when least expecting it and needing to brake.
>
>Regards,
>Bud Yerly
>
>-----Original Message----- 
>From: bill mcclellan
>Sent: Tuesday, January 20, 2015 3:03 PM
>To: europa-list@matronics.com
>Subject: Europa-List: Jamar finger brakes
>
>
>I have installed the Jamar dual brake cylinders and I have Grove brakes. 
>It
>appears that Jamar requires Dot 3 or 4 brake fluid and Grove requires
>MIL-5606 hydraulic fluid as does Matco.  I don't believe these two fluids
>are not compatible.  Does anyone have Jamar brakes cylinders with Grove or
>Matco brakes?  If so what brake fluid do you use and find compatible with
>this brake combination?
>
>Thanks,
>Bill McClellan
>
>
>Read this topic online here:
>
>http://forums.matronics.com/viewtopic.php?p=437336#437336
>
>



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