Today's Message Index:
----------------------
1. 12:13 PM - Re: Brake air leak (bmsim)
2. 01:00 PM - Re: Re: Brake air leak (A. Dennis Savarese)
3. 01:02 PM - Re: Re: Brake air leak (\)
4. 01:13 PM - Re: Re: Brake air leak (A. Dennis Savarese)
5. 01:17 PM - Re: Re: Brake air leak (Frank Stelwagon)
6. 01:21 PM - fuel system CJ-6 (\)
7. 05:52 PM - Re: Re: Brake air leak (Walter Lannon)
8. 06:24 PM - Re: Re: Brake air leak (Walter Lannon)
9. 06:29 PM - Yak 18T sound warning box (Yak Driver)
Message 1
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| Subject: | Re: Brake air leak |
I had this exact same issue today when I put the parking brake on for preflight.
Brake on, hiss under the rear floorboard, brake off, no hiss. I still have brakes
on each side, it's just constantly bleeding down while the brake is applied.
What did your issue end up being?
I know there's a brake valve, pressure reducer, and distribution valve in there
from the schematics, but I'm unsure where they are or what the most likely culprit
might be.
Any help or ideas would be very appreciated!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=477157#477157
Message 2
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| Subject: | Re: Brake air leak |
You are speaking about the brake reducing valve which is under the right
floor panel in the rear cockpit. That is where the leak is coming from
when the brake handle is squeezed or locked for the parking brake.
Remove the floor panon the right in the rear cockpit. Follow the brake
cables to the brake reducing valve. Remove the two 17mm B nuts from the
brake reducing valve. Then remove the two mounting bolts with an 8 mm,
1/4 drive socket and ratchet. Call Doug Sapp, the CJ parts supplier. He
has overhaul kits for them.
Dennis
A. Dennis Savarese
334-546-8182 (mobile)
www.yak-52.com
Skype - Yakguy1
On 1/7/2018 3:12 PM, bmsim wrote:
>
> I had this exact same issue today when I put the parking brake on for preflight.
Brake on, hiss under the rear floorboard, brake off, no hiss. I still have
brakes on each side, it's just constantly bleeding down while the brake is applied.
What did your issue end up being?
>
> I know there's a brake valve, pressure reducer, and distribution valve in there
from the schematics, but I'm unsure where they are or what the most likely
culprit might be.
>
> Any help or ideas would be very appreciated!
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=477157#477157
>
>
Message 3
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| Subject: | Re: Brake air leak |
If you're=C2-talking about a CJ-6 - - -Since your brake handle is only wo
rking the QS1 valve, most likely that is where your leak is. =C2-It just
may need to be overhauled. =C2-Sapp has a kit for that. =C2-Check that
first.
Jim "Pappy" Goolsby
-----Original Message-----
From: bmsim <bmsim@hotmail.com>
Sent: Sun, Jan 7, 2018 3:13 pm
Subject: Yak-List: Re: Brake air leak
I had this exact same issue today when I put the parking brake on for prefl
ight. Brake on, hiss under the rear floorboard, brake off, no hiss. I still
have brakes on each side, it's just constantly bleeding down while the bra
ke is applied. What did your issue end up being?
I know there's a brake valve, pressure reducer, and distribution valve in t
here from the schematics, but I'm unsure where they are or what the most li
kely culprit might be.
Any help or ideas would be very appreciated!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=477157#477157
Message 4
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| Subject: | Re: Brake air leak |
I forgot to mention the brake reducing valve is the unit in the upper
right corner of the photo. Look at the shape. That's what you'll be
removing.
Dennis
A. Dennis Savarese
334-546-8182 (mobile)
www.yak-52.com
Skype - Yakguy1
On 1/7/2018 3:59 PM, A. Dennis Savarese wrote:
> You are speaking about the brake reducing valve which is under the
> right floor panel in the rear cockpit. That is where the leak is
> coming from when the brake handle is squeezed or locked for the
> parking brake. Remove the floor panon the right in the rear
> cockpit. Follow the brake cables to the brake reducing valve.
> Remove the two 17mm B nuts from the brake reducing valve. Then
> remove the two mounting bolts with an 8 mm, 1/4 drive socket and
> ratchet. Call Doug Sapp, the CJ parts supplier. He has overhaul
> kits for them.
>
> Dennis
>
> A. Dennis Savarese
> 334-546-8182 (mobile)
> www.yak-52.com
> Skype - Yakguy1
>
> On 1/7/2018 3:12 PM, bmsim wrote:
>>
>> I had this exact same issue today when I put the parking brake on for
>> preflight. Brake on, hiss under the rear floorboard, brake off, no
>> hiss. I still have brakes on each side, it's just constantly bleeding
>> down while the brake is applied. What did your issue end up being?
>>
>> I know there's a brake valve, pressure reducer, and distribution
>> valve in there from the schematics, but I'm unsure where they are or
>> what the most likely culprit might be.
>>
>> Any help or ideas would be very appreciated!
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=477157#477157
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
Message 5
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| Subject: | Re: Brake air leak |
Contact Doug Sap and get rebuild kits for both valves. The valves are located under
the floor. Follow the linkage from the rudder pedals to the distribution
valve and the piping to the pressure reducing valve.
Frank
Sent from my iPhone
> On Jan 7, 2018, at 12:12, bmsim <bmsim@hotmail.com> wrote:
>
>
> I had this exact same issue today when I put the parking brake on for preflight.
Brake on, hiss under the rear floorboard, brake off, no hiss. I still have
brakes on each side, it's just constantly bleeding down while the brake is applied.
What did your issue end up being?
>
> I know there's a brake valve, pressure reducer, and distribution valve in there
from the schematics, but I'm unsure where they are or what the most likely
culprit might be.
>
> Any help or ideas would be very appreciated!
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=477157#477157
>
>
>
>
>
>
>
>
>
Message 6
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| Subject: | fuel system CJ-6 |
Troops,
I need a diagram of a CJ-6's fuel system. =C2-Not the ordinary one but th
e one that came with Gill Gruterious bladder tank mod. =C2-In it was the
set up for being able to select which tank to feed from. =C2-It used the
tank vents by cutting off the vent of the tank that you=C2-did not=C2-w
ant to feed from. =C2-After all these years I want to make this change.
Right now I'm working on my fuel system because of a very small seep leakin
g from my right fuel tank. =C2-I have the tank out of the wing and have f
ound a 1/16 crack in the front, inboard=C2-side of the tank, about 3" fro
m the front. =C2-Trying to decide how to patch it. =C2-Looking into a n
umber of products that I can do my self without having to send the tank bac
k to the manufacture and a big expense. =C2-Suggestion?
I thought that since I had the system apart I'd put in the mod.
Jim "Pappy" Goolsby
Message 7
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| Subject: | Re: Brake air leak |
In the CJ the brake pressure reducing valve is located, as Frank noted,
below the floor. It is accessed from a two Dzus panel on the bottom of the
center section left of center. In fact it is in exactly the same location
as the brake system water drain (snot) valve which is, of course, checked on
a regular basis.
Cheers;
Walt
-----Original Message-----
From: Frank Stelwagon
Sent: Sunday, January 07, 2018 1:17 PM
Subject: Re: Yak-List: Re: Brake air leak
Contact Doug Sap and get rebuild kits for both valves. The valves are
located under the floor. Follow the linkage from the rudder pedals to the
distribution valve and the piping to the pressure reducing valve.
Frank
Sent from my iPhone
> On Jan 7, 2018, at 12:12, bmsim <bmsim@hotmail.com> wrote:
>
>
> I had this exact same issue today when I put the parking brake on for
> preflight. Brake on, hiss under the rear floorboard, brake off, no hiss. I
> still have brakes on each side, it's just constantly bleeding down while
> the brake is applied. What did your issue end up being?
>
> I know there's a brake valve, pressure reducer, and distribution valve in
> there from the schematics, but I'm unsure where they are or what the most
> likely culprit might be.
>
> Any help or ideas would be very appreciated!
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=477157#477157
>
>
---
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Message 8
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| Subject: | Re: Brake air leak |
Forgot to mention that if you find any water here it is way past time to
service your water filter.
Also; Had to go to the Forum to find the original post on this subject
from Dan Booker. He said it is a CJ and the leak is on the RH side! That
is the proportioning valve location though a leak there may be more likely
to show up with rudder bar movement.
-----Original Message-----
From: Walter Lannon
Sent: Sunday, January 07, 2018 5:52 PM
Subject: Re: Yak-List: Re: Brake air leak
In the CJ the brake pressure reducing valve is located, as Frank noted,
below the floor. It is accessed from a two Dzus panel on the bottom of the
center section left of center. In fact it is in exactly the same location
as the brake system water drain (snot) valve which is, of course, checked on
a regular basis.
Cheers;
Walt
-----Original Message-----
From: Frank Stelwagon
Sent: Sunday, January 07, 2018 1:17 PM
Subject: Re: Yak-List: Re: Brake air leak
Contact Doug Sap and get rebuild kits for both valves. The valves are
located under the floor. Follow the linkage from the rudder pedals to the
distribution valve and the piping to the pressure reducing valve.
Frank
Sent from my iPhone
> On Jan 7, 2018, at 12:12, bmsim <bmsim@hotmail.com> wrote:
>
>
> I had this exact same issue today when I put the parking brake on for
> preflight. Brake on, hiss under the rear floorboard, brake off, no hiss. I
> still have brakes on each side, it's just constantly bleeding down while
> the brake is applied. What did your issue end up being?
>
> I know there's a brake valve, pressure reducer, and distribution valve in
> there from the schematics, but I'm unsure where they are or what the most
> likely culprit might be.
>
> Any help or ideas would be very appreciated!
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=477157#477157
>
>
---
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Message 9
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| Subject: | Yak 18T sound warning box |
Can anyone tell me the physical location of the sound warning box for a Yak 18T.
I am experiencing vhf issues and will need to find this box if I decide to change
out the radio and intercom with a modern one as it has all the inputs for
the slow speed, stall, gear alarms etc.
Thanks in advance.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=477171#477171
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