Warbird Information Exchange

DISCLAIMER: The views expressed on this site are the responsibility of the poster and do not reflect the views of the management.
It is currently Sat Dec 07, 2019 12:34 pm

All times are UTC - 5 hours


Classic Wings Magazine WWII Naval Aviation Research Pacific Luftwaffe Resource Center
When Hollywood Ruled The Skies - Volumes 1 through 4 by Bruce Oriss


Post new topic Reply to topic  [ 13 posts ] 
Author Message
PostPosted: Tue Oct 06, 2015 8:57 pm 
Offline
3000+ Post Club
3000+ Post Club
User avatar

Joined: Fri May 07, 2004 10:10 pm
Posts: 4107
Location: Maypearl, Texas
I'm looking for some intel on this Mod as there is a T-6 in need of it. He has Red Line Brakes and they went out. We tried to bleed them and were able to get the right side to come back but the left side is still out to lunch. We were told about this mod and thinking it will help him down the road.

Thanks in Advance,

Lynn


Top
 Profile  
 
PostPosted: Wed Oct 07, 2015 11:22 am 
Offline
Been here a long time
Been here a long time

Joined: Sun May 02, 2004 1:16 am
Posts: 10435
Is the brake master cylinder even connected to the main hydraulic reservoir, or is that the modification?


Top
 Profile  
 
PostPosted: Wed Oct 07, 2015 1:54 pm 
Offline
Lance Corporal

Joined: Sun Mar 24, 2013 5:10 pm
Posts: 27
Location: Germany
As far as i know, the original Models AT6-A to -F had a small Standpipe Reservoir on the Master Brakecylinder and used Castor based Brake Fluid. On the T-6G Model this was changed to the 5606 Fluid (Fluid 4) allready used in the Hydraulic System, by simply adding another Fitting to the Hydraulic Reservoir and connecting it to the Master Brakecylinders Reservoir.
I am not aware of any other Mod either.

Best regards

Stefan

_________________
immer den Knueppel ruhig halten!


Top
 Profile  
 
PostPosted: Wed Oct 07, 2015 3:33 pm 
Offline
3000+ Post Club
3000+ Post Club
User avatar

Joined: Fri May 07, 2004 10:10 pm
Posts: 4107
Location: Maypearl, Texas
I was told that one would use a reservoir from a Bell 47 helo and you would attach it to the brakes. I was hoping that Stoney would chime in on this one...


Top
 Profile  
 
PostPosted: Wed Oct 07, 2015 6:04 pm 
Offline
Wing Commander

Joined: Wed Oct 19, 2005 7:27 pm
Posts: 254
Location: Preparing for transit
Lynn, we pressure bled the brakes from the top down. I made an adapter by using a clear hose on a barbed fitting with the same pipe thread as the standpipe. I remove the standpipe and screw the fitting into the elbow, connect it to our pressure pot and just crack open the valve on the pot. Then open the bleeder on the wheel cylinder and then open the pot valve a little more. Once any air is forced out just close the bleeder on that wheel and open the one on the other wheel. Lose a little removing the fitting and re-attaching the standpipe but not enough to be an issue. I usually hold the hose vertical and unscrew it with the standpipe close by. A rag under the elbow keeps it from being to much of a mess. Works pretty good.

_________________
CraigQ


Top
 Profile  
 
PostPosted: Thu Oct 08, 2015 1:21 pm 
Offline
Been here a long time
Been here a long time

Joined: Sun May 02, 2004 1:16 am
Posts: 10435
Learned something new...

Find Number 36-27
Part Number 168-58801-17 (? hard to read on my copy)
Line Assembly - Hydraulic brake supply firewall elbow to master brake cylinder

Find Number 36-29
Part Number 121-58026-11
Line Assembly - Hyd brake supply reservoir to firewall elbow


Attachments:
File comment: From T.O.No.1T-6G-2
BrakeB.JPG
BrakeB.JPG [ 94.96 KiB | Viewed 2984 times ]
File comment: From T.O.No.1T-6G-2
BrakeA.JPG
BrakeA.JPG [ 135.34 KiB | Viewed 2986 times ]
Top
 Profile  
 
PostPosted: Thu Oct 08, 2015 10:02 pm 
Offline
3000+ Post Club
3000+ Post Club
User avatar

Joined: Fri May 07, 2004 10:10 pm
Posts: 4107
Location: Maypearl, Texas
CraigQ wrote:
Lynn, we pressure bled the brakes from the top down. I made an adapter by using a clear hose on a barbed fitting with the same pipe thread as the standpipe. I remove the standpipe and screw the fitting into the elbow, connect it to our pressure pot and just crack open the valve on the pot. Then open the bleeder on the wheel cylinder and then open the pot valve a little more. Once any air is forced out just close the bleeder on that wheel and open the one on the other wheel. Lose a little removing the fitting and re-attaching the standpipe but not enough to be an issue. I usually hold the hose vertical and unscrew it with the standpipe close by. A rag under the elbow keeps it from being to much of a mess. Works pretty good.


Just about what we had, it looked more like a IV bottle. Ozarka water bottle with a clear hose and we lost a lot of fluid and made a mess...


Top
 Profile  
 
PostPosted: Thu Oct 08, 2015 10:02 pm 
Offline
3000+ Post Club
3000+ Post Club
User avatar

Joined: Fri May 07, 2004 10:10 pm
Posts: 4107
Location: Maypearl, Texas
bdk wrote:
Learned something new...

Find Number 36-27
Part Number 168-58801-17 (? hard to read on my copy)
Line Assembly - Hydraulic brake supply firewall elbow to master brake cylinder

Find Number 36-29
Part Number 121-58026-11
Line Assembly - Hyd brake supply reservoir to firewall elbow



Thank you...


Top
 Profile  
 
PostPosted: Fri Oct 09, 2015 11:52 am 
Offline
Wing Commander

Joined: Wed Oct 19, 2005 7:27 pm
Posts: 254
Location: Preparing for transit
Lynn Allen wrote:
CraigQ wrote:
Lynn, we pressure bled the brakes from the top down. I made an adapter by using a clear hose on a barbed fitting with the same pipe thread as the standpipe. I remove the standpipe and screw the fitting into the elbow, connect it to our pressure pot and just crack open the valve on the pot. Then open the bleeder on the wheel cylinder and then open the pot valve a little more. Once any air is forced out just close the bleeder on that wheel and open the one on the other wheel. Lose a little removing the fitting and re-attaching the standpipe but not enough to be an issue. I usually hold the hose vertical and unscrew it with the standpipe close by. A rag under the elbow keeps it from being to much of a mess. Works pretty good.


Just about what we had, it looked more like a IV bottle. Ozarka water bottle with a clear hose and we lost a lot of fluid and made a mess...


Yeah I can see how that would be a mess. We have a small metal tank for a fluid reservoir we can pressure with air with a shut off valve. I can pressure the master from the top down with this and shut the valve off. This way there is only a couple of teaspoons of fluid in the line to deal with. Sounds like ya'll have a stubborn air bubble in the left wheel brake assy. May take more than just brake pedal pressure to make it move.

_________________
CraigQ


Top
 Profile  
 
PostPosted: Fri Oct 09, 2015 10:24 pm 
Offline
3000+ Post Club
3000+ Post Club
User avatar

Joined: Mon Nov 08, 2004 10:18 pm
Posts: 3008
Location: Phoenix, Az
sometimes with real stubborn air bubbles, you might think about putting the plane on jacks and retracting the gear,then bleed the system.

_________________
Matt Gunsch, A&P, IA, Warbird maint and restorations
Jack, You have Debauched my sloth !!!!!!
We tried voting with the Ballot box, When do we start voting from the Ammo box, and am I allowed only one vote ?
https://www.facebook.com/shoot.the.guns.of.history


Top
 Profile  
 
PostPosted: Sat Oct 10, 2015 5:15 am 
Offline
3000+ Post Club
3000+ Post Club
User avatar

Joined: Fri May 07, 2004 10:10 pm
Posts: 4107
Location: Maypearl, Texas
Matt Gunsch wrote:
sometimes with real stubborn air bubbles, you might think about putting the plane on jacks and retracting the gear,then bleed the system.


Roger that and thanks...


Top
 Profile  
 
PostPosted: Thu Oct 22, 2015 9:40 pm 
Offline
Lance Corporal

Joined: Sun Oct 27, 2013 5:53 pm
Posts: 30
Try taking the calipers loose and let them hang vertically for an hour or so. It will let any air trapped to move up the brakline to the master cylinder. Worked on mine after numerous attempts at bleeding.


Top
 Profile  
 
PostPosted: Sat Oct 24, 2015 9:15 pm 
Offline
3000+ Post Club
3000+ Post Club
User avatar

Joined: Fri May 07, 2004 10:10 pm
Posts: 4107
Location: Maypearl, Texas
Smaehr wrote:
Try taking the calipers loose and let them hang vertically for an hour or so. It will let any air trapped to move up the brakline to the master cylinder. Worked on mine after numerous attempts at bleeding.


Roger that as well, last I heard they were working fine. Must have been the 3-4 monkeys on the football working on it...


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 13 posts ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 1 guest


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 post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group