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CJ Rear Cockpit Gear Valve Leak

 
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PS



Joined: 08 Sep 2006
Posts: 84
Location: Texas

PostPosted: Mon Mar 29, 2021 11:06 am    Post subject: CJ Rear Cockpit Gear Valve Leak Reply with quote

My rear selector is leaking, how do I modify for front cockpit usage only?

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jonboede(at)hotmail.com
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PostPosted: Mon Mar 29, 2021 11:38 am    Post subject: CJ Rear Cockpit Gear Valve Leak Reply with quote

Jill sells a ported metal block that has roughly the same form factor and eliminates the rear gear handle.




From: owner-yak-list-server(at)matronics.com <owner-yak-list-server(at)matronics.com> on behalf of PS <psalter(at)aol.com>
Sent: Monday, March 29, 2021 2:06 PM
To: yak-list(at)matronics.com <yak-list(at)matronics.com>
Subject: CJ Rear Cockpit Gear Valve Leak

--> Yak-List message posted by: "PS" <psalter(at)aol.com>

My rear selector is leaking, how do I modify for front cockpit usage only?

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Phil




Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=501142#501142






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PostPosted: Mon Mar 29, 2021 11:49 am    Post subject: CJ Rear Cockpit Gear Valve Leak Reply with quote

If you have three tubing unions that Doug sells you can tie the proper tubes together behind the instrument panel.   There are 6 total.  Two for up.  Two for down.  Two for air supply.   
Easily done from the front cockpit with the pilots seat out.  
I did this on my CJ.  Took about 30 minutes.  
What ever you do.  When your done put the plane in Jacks and run the gear.  👍


Mark
N621CJ.  

On Mon, Mar 29, 2021 at 3:42 PM Jon Boede <jonboede(at)hotmail.com (jonboede(at)hotmail.com)> wrote:

Quote:
Jill sells a ported metal block that has roughly the same form factor and eliminates the rear gear handle.




From: owner-yak-list-server(at)matronics.com (owner-yak-list-server(at)matronics.com) <owner-yak-list-server(at)matronics.com (owner-yak-list-server(at)matronics.com)> on behalf of PS <psalter(at)aol.com (psalter(at)aol.com)>
Sent: Monday, March 29, 2021 2:06 PM
To: yak-list(at)matronics.com (yak-list(at)matronics.com) <yak-list(at)matronics.com (yak-list(at)matronics.com)>
Subject: CJ Rear Cockpit Gear Valve Leak  

--> Yak-List message posted by: "PS" <psalter(at)aol.com (psalter(at)aol.com)>

My rear selector is leaking, how do I modify for front cockpit usage only?

--------
Phil




Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=501142#501142






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PostPosted: Fri Apr 09, 2021 2:35 pm    Post subject: CJ Rear Cockpit Gear Valve Leak Reply with quote

Hello Phil,

Make sure you determine if it is leaking vs venting.
You (like me) could have bad actuator seals that are letting the
gear-down air flow past the seals into the gear-up side of the circuit.
It creates a frequent hissing from the rear gear selector that goes away
if you (WHILE ON JACKS) move the rear selector to neutral then back to
down, but then builds back up.

Mine had a gear collapse while we were investigating this issue.

Of course, the controls can leak also, but I think a lot of the time it
is really the cylinder seals.

Jeff

On 3/29/2021 2:06 PM, PS wrote:
Quote:


My rear selector is leaking, how do I modify for front cockpit usage only?

--------
Phil


Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=501142#501142



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PS



Joined: 08 Sep 2006
Posts: 84
Location: Texas

PostPosted: Fri Apr 09, 2021 6:42 pm    Post subject: CJ Rear Cockpit Gear Valve Leak Reply with quote

Jeff,

We could hear the rear gear valve leaking with an ultrasonic detector. I will check actuators to be certain.

Thanks

Phil

Sent from my iPhone

Quote:
On Apr 9, 2021, at 5:36 PM, Jeff Hove <flying(at)jeffhove.com> wrote:



Hello Phil,

Make sure you determine if it is leaking vs venting.
You (like me) could have bad actuator seals that are letting the gear-down air flow past the seals into the gear-up side of the circuit.
It creates a frequent hissing from the rear gear selector that goes away if you (WHILE ON JACKS) move the rear selector to neutral then back to down, but then builds back up.

Mine had a gear collapse while we were investigating this issue.

Of course, the controls can leak also, but I think a lot of the time it is really the cylinder seals.

Jeff

> On 3/29/2021 2:06 PM, PS wrote:
>
>
> My rear selector is leaking, how do I modify for front cockpit usage only?
>
> --------
> Phil
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=501142#501142
>
>
>
>
>
>
>
>
>






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