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teamgrumman(at)yahoo.com
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 Posted: Tue Nov 09, 2010 11:03 pm Post subject: brakes |
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OK, how would this happen?
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flyadive(at)gmail.com
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| Posted: Wed Nov 10, 2010 5:37 am Post subject: brakes |
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Gary:
Is it BROKEN out or WORN out part of the pin that we are seeing?
If broken out then it is a smelting problem and you found the 1 in a 1,000,000.
If it is worn out...
What does the pad plate look like?
It looks like it is the pilot side brake. And the top pin.
Forward movement of the plane with braking would cause a rotational torque upward in the direction of the top pin. This could constantly bang the pad plate against the pin.
The angle of the ware would indicate at what point in the travel the maximum pressure angle occurred.
But, would also show ware on the pad plate.
What does the pad look like?
Was the Piston kicked on an angle?
How was the Piston O-Ring?
Gary, you find some of the weirdest problems... It must be a West Coast Thing... Too close to California.
Barry
On Wed, Nov 10, 2010 at 1:59 AM, Gary Vogt <teamgrumman(at)yahoo.com (teamgrumman(at)yahoo.com)> wrote:
| Quote: | OK, how would this happen?
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--
Barry
"Chop'd Liver"
[quote][b]
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bob.hodo(at)yahoo.com
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| Posted: Wed Nov 10, 2010 5:39 am Post subject: brakes |
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| Quote: | >>OK, how would this happen?<<<
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Properly installed it could not have happened. Right?
Sure looks like that ground away pin rode against a flat surface that was turning while it was still. How does it fit against the top of the brake rotor? Is that a match? How it got there and stayed there is quite a puzzle, just from memory of how the pieces fit.
Bob Hodo
[quote][b]
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flyadive(at)gmail.com
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| Posted: Wed Nov 10, 2010 6:02 am Post subject: brakes |
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Gary & Bob H.:
Ya know I like Bob's answer/question. Is there more to the story that the picture is not showing?
Did it rub against the rotor?
Barry
On Wed, Nov 10, 2010 at 8:35 AM, Bob Hodo <bob.hodo(at)yahoo.com (bob.hodo(at)yahoo.com)> wrote:
| Quote: | >>>OK, how would this happen?<<<
Properly installed it could not have happened. Right?
Sure looks like that ground away pin rode against a flat surface that was turning while it was still. How does it fit against the top of the brake rotor? Is that a match? How it got there and stayed there is quite a puzzle, just from memory of how the pieces fit.
Bob Hodo
| Quote: |
_blank">www.aeroelectric.com
.com" target="_blank">www.buildersbooks.com
="_blank">www.homebuilthelp.com
_blank">http://www.matronics.com/contribution
st" target="_blank">http://www.matronics.com/Navigator?TeamGrumman-List
tp://forums.matronics.com
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--
Barry
"Chop'd Liver"
[quote][b]
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teamgrumman(at)yahoo.com
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| Posted: Wed Nov 10, 2010 9:46 am Post subject: brakes |
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Your guess is as good as mine. I looked at all related parts. No abnormal wear.
From: Bob Hodo <bob.hodo(at)yahoo.com>
To: teamgrumman-list(at)matronics.com
Sent: Wed, November 10, 2010 5:35:15 AM
Subject: Re: brakes
>>>OK, how would this happen?<<<
Properly installed it could not have happened. Right?
Sure looks like that ground away pin rode against a flat surface that was turning while it was still. How does it fit against the top of the brake rotor? Is that a match? How it got there and stayed there is quite a puzzle, just from memory of how the pieces fit.
Bob Hodo
[quote][b]
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bob.hodo(at)yahoo.com
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| Posted: Wed Nov 10, 2010 10:44 am Post subject: brakes |
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Is the wear on that in pin fresh or did it happen a long time ago?
Sent via DROID on Verizon Wireless
-----Original message-----
[quote]From: Gary Vogt <teamgrumman(at)yahoo.com>
To: teamgrumman-list(at)matronics.com
Sent: Wed, Nov 10, 2010 17:51:36 GMT+00:00
Subject: Re: TeamGrumman-List: brakes
Your guess is as good as mine. I looked at all related parts. No abnormal wear.
From: Bob Hodo <bob.hodo(at)yahoo.com>
To: teamgrumman-list(at)matronics.com
Sent: Wed, November 10, 2010 5:35:15 AM
Subject: Re: TeamGrumman-List: brakes
>>>OK, how would this happen?<<<
Properly installed it could not have happened. Right?
Sure looks like that ground away pin rode against a flat surface that was turning while it was still. How does it fit against the top of the brake rotor? Is that a match? How it got there and stayed there is quite a puzzle, just from memory of how the pieces fit.
Bob Hodo
[quote][b]
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garnerrice(at)hotmail.com
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| Posted: Wed Nov 10, 2010 12:21 pm Post subject: brakes |
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Its simple. Somebody at some point want to remove the guide pin and couldn't figure how to get a wrench on it. So now they can put the metric wrench on it and twist. Isn't that SAP? (standard alabamy practice)
Date: Wed, 10 Nov 2010 09:43:31 -0800
From: teamgrumman(at)yahoo.com
Subject: Re: brakes
To: teamgrumman-list(at)matronics.com
.ExternalClass DIV {;} Your guess is as good as mine. I looked at all related parts. No abnormal wear.
From: Bob Hodo <bob.hodo(at)yahoo.com>
To: teamgrumman-list(at)matronics.com
Sent: Wed, November 10, 2010 5:35:15 AM
Subject: Re: brakes
>>>OK, how would this happen?<<<
Properly installed it could not have happened. Right?
Sure looks like that ground away pin rode against a flat surface that was turning while it was still. How does it fit against the top of the brake rotor? Is that a match? How it got there and stayed there is quite a puzzle, just from memory of how the pieces fit.
Bob Hodo
[quote]
_blank>www.aeroelectric.com
/" target=_blank>www.buildersbooks.com
=_blank>www.homebuilthelp.com
=_blank>http://www.matronics.com/contribution
List" target=_blank>http://www.matronics.com/Navigator?TeamGrumman-List
ttp://forums.matronics.com
[b]
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flyadive(at)gmail.com
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| Posted: Wed Nov 10, 2010 2:21 pm Post subject: brakes |
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Tell ya what Gary... After you pull the part - If you want to send it to me I'll do an acid test to see if it was a defect in material or abrasion.
Barry
On Wed, Nov 10, 2010 at 12:43 PM, Gary Vogt <teamgrumman(at)yahoo.com (teamgrumman(at)yahoo.com)> wrote:
| Quote: | Your guess is as good as mine. I looked at all related parts. No abnormal wear.
From: Bob Hodo <bob.hodo(at)yahoo.com (bob.hodo(at)yahoo.com)>
To: teamgrumman-list(at)matronics.com (teamgrumman-list(at)matronics.com)
Sent: Wed, November 10, 2010 5:35:15 AM
Subject: Re: TeamGrumman-List: brakes
>>>OK, how would this happen?<<<
Properly installed it could not have happened. Right?
Sure looks like that ground away pin rode against a flat surface that was turning while it was still. How does it fit against the top of the brake rotor? Is that a match? How it got there and stayed there is quite a puzzle, just from memory of how the pieces fit.
Bob Hodo
| Quote: |
_blank">www.aeroelectric.com
.com" target="_blank">www.buildersbooks.com
="_blank">www.homebuilthelp.com
_blank">http://www.matronics.com/contribution
st" target="_blank">http://www.matronics.com/Navigator?TeamGrumman-List
tp://forums.matronics.com
|
|
--
Barry
"Chop'd Liver"
[quote][b]
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teamgrumman(at)yahoo.com
Guest
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| Posted: Wed Nov 10, 2010 3:37 pm Post subject: brakes |
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I replaced the part yesterday and threw the old one away. It looked like it had been there a while. If I were to guess, it looked like someone intensionally ground it down on a bench grinder.
From: FLYaDIVE <flyadive(at)gmail.com>
To: teamgrumman-list(at)matronics.com
Sent: Wed, November 10, 2010 2:19:04 PM
Subject: Re: brakes
Tell ya what Gary... After you pull the part - If you want to send it to me I'll do an acid test to see if it was a defect in material or abrasion.
Barry
On Wed, Nov 10, 2010 at 12:43 PM, Gary Vogt <teamgrumman(at)yahoo.com (teamgrumman(at)yahoo.com)> wrote:
| Quote: | Your guess is as good as mine. I looked at all related parts. No abnormal wear.
From: Bob Hodo <bob.hodo(at)yahoo.com (bob.hodo(at)yahoo.com)>
To: teamgrumman-list(at)matronics.com (teamgrumman-list(at)matronics.com)
Sent: Wed, November 10, 2010 5:35:15 AM
Subject: Re: brakes
>>>OK, how would this happen?<<<
Properly installed it could not have happened. Right?
Sure looks like that ground away pin rode against a flat surface that was turning while it was still. How does it fit against the top of the brake rotor? Is that a match? How it got there and stayed there is quite a puzzle, just from memory of how the pieces fit.
Bob Hodo
|
--
Barry
"Chop'd Liver"
[quote][b]
| | - The Matronics TeamGrumman-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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flyv35b(at)minetfiber.com
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| Posted: Wed Nov 10, 2010 4:42 pm Post subject: brakes |
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Why not just replace the two pins? The caliper didn't look to bad if it were bead blasted and cleaned up.
Cliff
[quote] ---
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teamgrumman(at)yahoo.com
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| Posted: Wed Nov 10, 2010 8:01 pm Post subject: brakes |
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you amaze me Cliff. No where in my email did I say I replaced the caliper.
From: flyv35b <flyv35b(at)minetfiber.com>
To: teamgrumman-list(at)matronics.com
Sent: Wed, November 10, 2010 4:39:43 PM
Subject: Re: brakes
DIV { MARGIN:0px;} Why not just replace the two pins? The caliper didn't look to bad if it were bead blasted and cleaned up.
Cliff
[quote] ---
| | - The Matronics TeamGrumman-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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flyv35b(at)minetfiber.com
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| Posted: Thu Nov 11, 2010 6:45 am Post subject: brakes |
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You're right, you just said you threw the part away. not the caliper. I guess I just assumed you threw the assembly away. Bad assumption.
[quote] ---
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jnlncody(at)wildblue.net
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| Posted: Thu Nov 11, 2010 7:04 am Post subject: brakes |
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Gary,
the only time I have had the brake assembly get notched was with a wheel bearing that was failing.
not the same type of aircraft it was on a Turbine Commander 840. Just maybe a similar thing is happening here
John
[quote][b]
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