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Brake pad back plate bolts

 
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dmaib@me.com



Joined: 25 Apr 2006
Posts: 454
Location: New Smyrna Beach, Florida

PostPosted: Mon Jun 07, 2021 4:28 pm    Post subject: Brake pad back plate bolts Reply with quote

I don't have immediate access to my plans and wonder if anyone out there can tell me the size of the two bolts that bolt the brake pad back plate to the brake unit? (Cleveland wheels and brakes)

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David Maib
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Lew Gallagher



Joined: 04 Jan 2008
Posts: 398
Location: Greenville , SC

PostPosted: Mon Jun 07, 2021 5:44 pm    Post subject: Brake pad back plate bolts Reply with quote

Let's see if this helps. Looks like AN822-4D It's off Tim Olsen's site. If not I can probably get a picture from the manual tomorrow.
[quote]
On 6/7/2021 8:31:07 PM, dmaib(at)me.com <dmaib(at)me.com> wrote:


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dmaib@me.com



Joined: 25 Apr 2006
Posts: 454
Location: New Smyrna Beach, Florida

PostPosted: Mon Jun 07, 2021 6:13 pm    Post subject: Re: Brake pad back plate bolts Reply with quote

I did find that, but that's the AN elbow fitting. I am pretty sure the bolt is an AN4 but don't know the length. I'll be able to find it when I go to the hangar, hopefully tomorrow.
Thanks.


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bcondrey



Joined: 03 Apr 2006
Posts: 579

PostPosted: Mon Jun 07, 2021 6:15 pm    Post subject: Brake pad back plate bolts Reply with quote

Just sent Dave the plans section. An AN822 is a fluid fitting…
Bob

Quote:
On Jun 7, 2021, at 8:48 PM, Lew Gallagher <lewgall(at)charter.net> wrote:

 Let's see if this helps. Looks like AN822-4D It's off Tim Olsen's site. If not I can probably get a picture from the manual tomorrow.
Quote:

On 6/7/2021 8:31:07 PM, dmaib(at)me.com <dmaib(at)me.com> wrote:--> RV10-List message posted by: "dmaib(at)me.com"

I don't have immediate access to my plans and wonder if anyone out there can tell me the size of the two bolts that bolt the brake pad back plate to the brake unit?

--------
David Maib
RV-10 #40559
New Smyrna Beach, FL




Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=502279#502279





==================================== ==================================== ==================================== ==================================== ====================================





<RV-10 brake assembly.jpg>



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bcondrey



Joined: 03 Apr 2006
Posts: 579

PostPosted: Mon Jun 07, 2021 6:36 pm    Post subject: Brake pad back plate bolts Reply with quote

Assuming they are Cleveland 30-59E brakes, it’s an AN4-17A with blue loctite applied per ACS. https://www.aircraftspruce.com/catalog/lgpages/clev-anch-bolt103-11700.php
Bob

Quote:
On Jun 7, 2021, at 9:18 PM, dmaib(at)me.com wrote:

--> RV10-List message posted by: "dmaib(at)me.com" <dmaib(at)me.com>

I did find that, but that's the AN elbow fitting. I am pretty sure the bolt is an AN4 but don't know the length. I'll be able to find it when I go to the hangar, hopefully tomorrow.
Thanks.

--------
David Maib
RV-10 #40559
New Smyrna Beach, FL


Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=502281#502281




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Kellym



Joined: 10 Jan 2006
Posts: 1688
Location: Sun Lakes AZ

PostPosted: Mon Jun 07, 2021 7:04 pm    Post subject: Brake pad back plate bolts Reply with quote

The stock brake pad has self-locking threads built in and uses standard
AN4-17A. You can use the blue loctite if it gives you more comfort. I
had Clevelands on a Cessna that had same arrangement for over 20 years,
never had a bolt back out, then had a Mooney that required safety wire
on those bolts, couldn't see that it made much difference, just took
more time to add the safety wire.

On 6/7/2021 7:35 PM, Bob's Gmail wrote:
Quote:
Assuming they are Cleveland 30-59E brakes, it’s an AN4-17A with blue
loctite applied per ACS.
https://www.aircraftspruce.com/catalog/lgpages/clev-anch-bolt103-11700.php
<https://www.aircraftspruce.com/catalog/lgpages/clev-anch-bolt103-11700.php>

Bob

> On Jun 7, 2021, at 9:18 PM, dmaib(at)me.com wrote:
>
> 
>
> I did find that, but that's the AN elbow fitting. I am pretty sure the
> bolt is an AN4 but don't know the length. I'll be able to find it when
> I go to the hangar, hopefully tomorrow.
> Thanks.
>
> --------
> David Maib
> RV-10 #40559
> New Smyrna Beach, FL
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=502281#502281
>


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Kelly McMullen
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KCHD
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dmaib@me.com



Joined: 25 Apr 2006
Posts: 454
Location: New Smyrna Beach, Florida

PostPosted: Tue Jun 08, 2021 2:21 am    Post subject: Re: Brake pad back plate bolts Reply with quote

AN 417A it is! Thanks Bob and Kelly (and Tim O). I remembered that the pad had self locking threads. The DAR that inspected my airplane way back in 2008 was not comfortable with that and suggested (strongly) that I install drilled head bolts and safety wire them. I did so to make him happy and have safety wired them all these years. Belt and suspenders. 😄
Thanks again for the response.


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David Maib
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Kelly McMullen



Joined: 16 Apr 2008
Posts: 1187
Location: Sun Lakes AZ

PostPosted: Tue Jun 08, 2021 5:05 am    Post subject: Brake pad back plate bolts Reply with quote

I find it almost amusing that some DARs think their perception of safety is better than the FAA ACO that approved the FAA/PMA or STC on the Cleveland wheels.
The conversion kits Cleveland sells for single puck brakes on Cessnas do not have safety wired bolts; you can see from Cleveland parts manual that some versions of the 30-59 series have drilled head bolts, some do not. We learn some things in A&P school that are mostly universal, like which direction a bolt head should go, that in certain places is flat wrong. For instance, the bolts that attach the vertical stab to the tail cone absolutely need the bolt head to the rear for rudder clearance, when the rule of thumb would put the bolt heads to the front. Incredible that the design engineers usually do know what they are doing when they specify something that goes against convention. I wonder how many more decades we will go with safety wiring spin on oil filters? I have seen a few that were not tightened enough, but never seen one back out, auto or airplane.
Quote:
Kelly


On Tue, Jun 8, 2021 at 3:25 AM dmaib(at)me.com (dmaib(at)me.com) <dmaib(at)me.com (dmaib(at)me.com)> wrote:

Quote:
--> RV10-List message posted by: "dmaib(at)me.com (dmaib(at)me.com)" <dmaib(at)me.com (dmaib(at)me.com)>

AN 417A it is! Thanks Bob and Kelly (and Tim O). I remembered that the pad had self locking threads. The DAR that inspected my airplane way back in 2008 was not comfortable with that and suggested (strongly) that I install drilled head bolts and safety wire them. I did so to make him happy and have safety wired them all these years. Belt and suspenders. 😄
Thanks again for the response.

--------
David Maib
RV-10 #40559
New Smyrna Beach, FL




Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=502286#502286






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Kellym



Joined: 10 Jan 2006
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Location: Sun Lakes AZ

PostPosted: Tue Jun 08, 2021 5:36 am    Post subject: Brake pad back plate bolts Reply with quote

I know a bottle of blue Loctite is not cheap, but the price of getting a
Cleveland sourced AN4-17A with a little Loctite applied(and oem part
number) is $11.88, while the bolt itself 40 cents, both prices from ACS.
Oh, and a drilled head AN4H-17A is 92 cents. So you can get the drilled
head, apply some blue Loctite, and safety wire to make sure that sucker
never comes loose. By the way, Permatex has a new version of
Threadlocker, Threadlocker Orange that combines the strength of
threadlocker Red with the removability of Threadlocker Blue.
Or you could get Matco, Grove or Beringer brakes. I understand the
Beringer can even be purchased with an anti-skid version for those that
operate on wet and/or icy runways. The regular Beringer kit to replace
the Clevelands is only $3478.82 and apparently includes tires.
Kelly

On 6/8/2021 6:04 AM, Kelly McMullen wrote:
Quote:
I find it almost amusing that some DARs think their perception of safety
is better than the FAA ACO that approved the FAA/PMA or STC on the
Cleveland wheels.
The conversion kits Cleveland sells for single puck brakes on Cessnas do
not have safety wired bolts; you can see from Cleveland parts manual
that some versions of the 30-59 series have drilled head bolts, some do
not. We learn some things in A&P school that are mostly universal, like
which direction a bolt head should go, that in certain places is flat
wrong. For instance, the bolts that attach the vertical stab to the tail
cone absolutely need the bolt head to the rear for rudder clearance,
when the rule of thumb would put the bolt heads to the front. Incredible
that the design engineers usually do know what they are doing when they
specify something that goes against convention. I wonder how many more
decades we will go with safety wiring spin on oil filters? I have seen a
few that were not tightened enough, but never seen one back out, auto or
airplane.

Kelly



On Tue, Jun 8, 2021 at 3:25 AM dmaib(at)me.com <mailto:dmaib(at)me.com>
<dmaib(at)me.com <mailto:dmaib(at)me.com>> wrote:


<mailto:dmaib(at)me.com>" <dmaib(at)me.com <mailto:dmaib(at)me.com>>

AN 417A it is! Thanks Bob and Kelly (and Tim O). I remembered that
the pad had self locking threads. The DAR that inspected my airplane
way back in 2008 was not comfortable with that and suggested
(strongly) that I install drilled head bolts and safety wire them. I
did so to make him happy and have safety wired them all these years.
Belt and suspenders. 😄
Thanks again for the response.

--------
David Maib
RV-10 #40559
New Smyrna Beach, FL




Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=502286#502286
<http://forums.matronics.com/viewtopic.php?p=502286#502286>






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errer" target="_blank">http://wiki.matronics.com
===========
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rel="noreferrer" target="_blank">http://www.matronics.com/contribution
===========





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KCHD
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