I highly recommend that you clearly mark the Brake Master area and gear
struts with what type fluid is used.
Also recommend that you make a Oil Services List, put in the Log book where
it is noticable.
I continuly have to question customer aircraft (call the previous owner or
restorer) as to what the previous service was. It is hard to tell between
DOT 3, DOT 4, DOT 5, Motorcycle Strut Oil, and 5606 after it has been in
service, it becomes dirty and hard to tell the difference.
Sometimes I have to resort to the good ole taste test. That gets old.
Jamie
'----- Original Message -----
From: "Michael Denest"
To:
Sent: Wednesday, August 17, 2005 5:02 AM
Subject: Re: [fairchildclub] Hayes brakes.
>I agree with Jamie. Use DOT 5 from the very
> beginning. Dot 5 is a synthetic fluid, DOT 3 is
> petroleum based. Did you also replace the seals in
> the master cylinder?
>
> Mike
>
> --- "Jamie S. Treat" wrote:
>
>> Bob,
>>
>> The Dot 3 is too harsh, makes the rubber swell. I
>> use DOT 4 as the old
>> standard. Now I switch to DOT 5 with a flushed
>> system. Also the new
>> Clevelands will except the DOT 5 to my surprise.
>>
>> Jamie
>>
>>
>> Jamie S. Treat A&P/IA
>> Aircraft Restoration & Repair
>> 24201 David C. Johnson Loop
>> Kelly Airpark
>> Elbert, CO 80106
>> HM/Shop 303-648-0130
>> JamieTreat@direcway.com
>>
>> ----- Original Message -----
>> From: "Robert Etter"
>> To:
>> Sent: Tuesday, August 16, 2005 9:24 PM
>> Subject: [fairchildclub] Hayes brakes.
>>
>>
>> > To start with, about a year ago, I assembles two
>> brake assemblies for the
>> > 24 out of parts that I had on hand. Ordered new
>> pads for both assemblies
>> > (New Pads). Then turned down the pads to where
>> they met the .007-.010
>> > inch clearance with the drum. Serviced the
>> initially with Dot 3 brake
>> > fluid. Left side worked fine. I later found a
>> bad expander tube on the
>> > right side. Then things started getting messes.
>> Did much repainting on
>> > the lower right side. Took may parts apart and
>> repainted them. Ya hear
>> > that one before didn't ya.
>> >
>> > Finally got set up to start servicing the system
>> with Dot 5. I made a
>> > closed system to bleed the brakes and to same the
>> expensive Dot 5 fluid.
>> > Before I got started, I flushed the system and
>> lines with alcohol. After
>> > I got everything as clean as possible, I sued a
>> clear plastic hose coming
>> > from a bottle mounted up near the wing. I started
>> back-filling the system
>> > with fluid. Once I knew that I have fluid coming
>> up into the reservoir,
>> > and had got it topped off. A few good strokes of
>> the brake pedal showed
>> > that there was no air in the system.
>> >
>> > I tried to do the same thing on the left side.
>> I then noticed that the
>> > brake was dragging pretty hard. The brake
>> assembly was turned to match
>> > the brake drum over a year ago, and has done
>> noting but sit there until
>> > last weekend. I originally serviced it with Dot
>> 3, then about a month
>> > ago, bleed & flushed all that out with alcohol.
>> >
>> > Why should you come back a month later and find
>> the expander tube has
>> > swelled to the tune of .007"-.010". I had to
>> remove at least that much
>> > material to get the system to work right.
>> >
>> > Bob Etter
>> > PO Box 974
>> > Tonopah, NV 89049
>> > 775-482-6820
>> > rletter@citlink.net
>> >
>> >
>> > [Non-text portions of this message have been
>> removed]
>> >
>> >
>> >
>> >
>> >
>> > Yahoo! Groups Links
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>>
>>
>>
>
>
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