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Viperdoc
Joined: 19 Apr 2014 Posts: 484 Location: 08A
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Posted: Sat Apr 25, 2015 11:28 am Post subject: Air compressor tear down |
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For those that want to see the compressor gasket alignment, the shear coupling, the plenary gear, the alignment sleeve as it is mated to the accessory drive case and exactly where the shear coupling lives and what has to come off to replace it. See the following photos.
Not sure what you were talking about taking apart to replace the shear coupling Mark. When you got a replacement compressor did you only get the cylinder assembly?
Doc
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<pre><b><font size=3D2 color="#000000" face=3D"courier new,courier">
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mark.bitterlich(at)navy.m Guest
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Posted: Mon Apr 27, 2015 5:27 am Post subject: Air compressor tear down |
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Doc.
Talk to Dennis, he'll show you.
What I have been trying to come up with the title for, albeit incorrectly, is the mounting pad/boss/plate that the sheer coupling goes into. That plate has a gasket on the side that pushes against the engine, and another gasket on the side the compressor comes up against. Thus two gaskets. Call Jill, she'll be glad to send you one of each kind. I already have, twice.
You have a compressor that bolts onto a 90 gear drive assembly. That in turn pushes up against the sheer drive "housing" ?? I don't know the "official name" for it.
Apparently you never realized it was there when you pulled your compressor off. That is entirely possible if it was stuck to the engine real good and you yanked on the compressor and just that part came off. In my case, both pieces came off, ... twice .... and I needed to replace both gaskets. Regardless, personally when I take the torque off the bolts that hold a gasket in place I always replace it. It is such a pain to get off, that I don't want to take the chance of a used and compressed gasket leaking.
If you notice the main oil passage gallery there is a "cup" that has been ground out on one side of that piece, and that is the part that the proper gasket must be mated to.
I think I've beat this to death enough. Now you know.
Mark
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Viperdoc
Joined: 19 Apr 2014 Posts: 484 Location: 08A
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Posted: Mon Apr 27, 2015 5:24 pm Post subject: Air compressor tear down |
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Correct there are two gaskets.
CJ gaskets also work on the compressor too.
Doc
Sent from my iPad
[quote] On Apr 27, 2015, at 8:27 AM, Bitterlich, Mark G CIV NAVAIR, WD <mark.bitterlich(at)navy.mil> wrote:
Doc.
Talk to Dennis, he'll show you.
What I have been trying to come up with the title for, albeit incorrectly, is the mounting pad/boss/plate that the sheer coupling goes into. That plate has a gasket on the side that pushes against the engine, and another gasket on the side the compressor comes up against. Thus two gaskets. Call Jill, she'll be glad to send you one of each kind. I already have, twice.
You have a compressor that bolts onto a 90 gear drive assembly. That in turn pushes up against the sheer drive "housing" ?? I don't know the "official name" for it.
Apparently you never realized it was there when you pulled your compressor off. That is entirely possible if it was stuck to the engine real good and you yanked on the compressor and just that part came off. In my case, both pieces came off, ... twice .... and I needed to replace both gaskets. Regardless, personally when I take the torque off the bolts that hold a gasket in place I always replace it. It is such a pain to get off, that I don't want to take the chance of a used and compressed gasket leaking.
If you notice the main oil passage gallery there is a "cup" that has been ground out on one side of that piece, and that is the part that the proper gasket must be mated to.
I think I've beat this to death enough. Now you know.
Mark
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Viperdoc
Joined: 19 Apr 2014 Posts: 484 Location: 08A
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Posted: Mon Apr 27, 2015 8:39 pm Post subject: Air compressor tear down |
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Show me what? My disassembled accessory case, pinion gear ( part #14-614-110), pinion case # 14-614-107), shear pin # 14-614-107), the Bain of the compressor drive shaft, the shear pin (#14-611-252-01), the gasket x 2 (# 14-011-340), and my compressor (AK-50) removed off the the accessory case?
Mark, I realized it (the case) was there with the two gaskets when I pulled the compressor off to crack the accessory case off the super charger case. Those pictures came from my totally disassembled M-14 that I tore down. The parts are stored in sealed plastic boxes for spare parts.
I'll rebuild it after I retire. A replacement zero time M-14 P engine in the local area became available so I bought it to expedite things.
What does not excite me is the re-attachment of the air lines to the start spider. And timing it. Will cross that bridge in due time. Other fish to fry for now.
By the way, I have a complete engine rebuild kit from Aerostar. It includes all of the gaskets among other things. The pain in finding parts in it is needing the catalog to look up the parts numbers to see what the part is. Since all of the parts are wrapped in waxed brown paper with that special Romanian manor of folding and sealing without tape. They use the terms gasket and crush washer interchangeably just to make parts diving interesting! 😖
Doc
Sent from my iPad
[quote] On Apr 27, 2015, at 8:27 AM, Bitterlich, Mark G CIV NAVAIR, WD <mark.bitterlich(at)navy.mil> wrote:
Doc.
Talk to Dennis, he'll show you.
What I have been trying to come up with the title for, albeit incorrectly, is the mounting pad/boss/plate that the sheer coupling goes into. That plate has a gasket on the side that pushes against the engine, and another gasket on the side the compressor comes up against. Thus two gaskets. Call Jill, she'll be glad to send you one of each kind. I already have, twice.
You have a compressor that bolts onto a 90 gear drive assembly. That in turn pushes up against the sheer drive "housing" ?? I don't know the "official name" for it.
Apparently you never realized it was there when you pulled your compressor off. That is entirely possible if it was stuck to the engine real good and you yanked on the compressor and just that part came off. In my case, both pieces came off, ... twice .... and I needed to replace both gaskets. Regardless, personally when I take the torque off the bolts that hold a gasket in place I always replace it. It is such a pain to get off, that I don't want to take the chance of a used and compressed gasket leaking.
If you notice the main oil passage gallery there is a "cup" that has been ground out on one side of that piece, and that is the part that the proper gasket must be mated to.
I think I've beat this to death enough. Now you know.
Mark
--
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Viperdoc
Joined: 19 Apr 2014 Posts: 484 Location: 08A
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Posted: Mon Apr 27, 2015 8:59 pm Post subject: Air compressor tear down |
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Admittedly, Dennis has shown me a lot.
Doc
Sent from my iPad
[quote] On Apr 27, 2015, at 8:27 AM, Bitterlich, Mark G CIV NAVAIR, WD <mark.bitterlich(at)navy.mil> wrote:
Doc.
Talk to Dennis, he'll show you.
What I have been trying to come up with the title for, albeit incorrectly, is the mounting pad/boss/plate that the sheer coupling goes into. That plate has a gasket on the side that pushes against the engine, and another gasket on the side the compressor comes up against. Thus two gaskets. Call Jill, she'll be glad to send you one of each kind. I already have, twice.
You have a compressor that bolts onto a 90 gear drive assembly. That in turn pushes up against the sheer drive "housing" ?? I don't know the "official name" for it.
Apparently you never realized it was there when you pulled your compressor off. That is entirely possible if it was stuck to the engine real good and you yanked on the compressor and just that part came off. In my case, both pieces came off, ... twice .... and I needed to replace both gaskets. Regardless, personally when I take the torque off the bolts that hold a gasket in place I always replace it. It is such a pain to get off, that I don't want to take the chance of a used and compressed gasket leaking.
If you notice the main oil passage gallery there is a "cup" that has been ground out on one side of that piece, and that is the part that the proper gasket must be mated to.
I think I've beat this to death enough. Now you know.
Mark
--
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Posted: Tue Apr 28, 2015 6:47 am Post subject: Air compressor tear down |
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Whatever you say Doc.
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mark.bitterlich(at)navy.m Guest
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Posted: Tue Apr 28, 2015 6:49 am Post subject: Air compressor tear down |
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Dennis has showed EVERYBODY a lot.
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