Primer O Rings

How to keep the Cessna 170 flying and airworthy.

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Mark A
Posts: 39
Joined: Mon Sep 23, 2019 5:44 pm

Primer O Rings

Post by Mark A »

Anyone have a model number for replacement O rings for the primer? Aircraft is 1951 170A. Thanks
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Mark A
Posts: 39
Joined: Mon Sep 23, 2019 5:44 pm

Re: Primer O Rings

Post by Mark A »

I should have wrote “part number.”
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dstates
Posts: 505
Joined: Sun Jun 30, 2019 5:50 pm

Re: Primer O Rings

Post by dstates »

This is the primer kit I got from Aircraft Spruce that worked great. All it has is two o-rings (if I was at the hangar I could give you the individual o-ring part numbers) and some fuel lube. Unfortunately they show they are out of stock right now.
primer_kit.jpg
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N1235D - 1951 170A - SN: 20118
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Mark A
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Joined: Mon Sep 23, 2019 5:44 pm

Re: Primer O Rings

Post by Mark A »

Thanks
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GAHorn
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Joined: Fri Apr 12, 2002 8:45 pm

Re: Primer O Rings

Post by GAHorn »

https://www.mcfarlaneaviation.com/produ ... /FPS-KT-1/
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons. ;)
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gfeher
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Re: Primer O Rings

Post by gfeher »

The part numbers of the O-rings themselves are MS29513-012 (70 Duro Nitrile /“fuel resistant” NBR); or NAS1593-012/M83248/1-012 (fluorocarbon synthetic rubber -”Viton”). MCM83248/1-012 is McFarlane’s part number for it's FAA-PMA Viton replacements, but as George pointed out, McFarlane also sells them in pairs in a replacement "kit."
Gene Feher
Argyle (1C3), NY
'52 170B N2315D s/n 20467 C-145-2
Experimental J3 Cub Copy N7GW O-200
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Mark A
Posts: 39
Joined: Mon Sep 23, 2019 5:44 pm

Re: Primer O Rings

Post by Mark A »

Thanks All
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Mark A
Posts: 39
Joined: Mon Sep 23, 2019 5:44 pm

Re: Primer O Rings

Post by Mark A »

This worked really well and was easy. Open primer and spray in notch to lubricate O rings.
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