Sticky fuel primer on the Cessna 180

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tazin river
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Sticky fuel primer on the Cessna 180

#1 Post by tazin river » Mon Aug 17, 2015 10:12 am

Hello there...

What do you guys use to lubricate the fuel primer when it gets sticky...

Thanks
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PilotDAR
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Re: Sticky fuel primer on the Cessna 180

#2 Post by PilotDAR » Mon Aug 17, 2015 2:46 pm

There is a gasoline proof grease which is used for this. A friend gave me a film container full twenty years ago, and each annual, it gets a smear. It works very well. Unfortunately, it's not in the original container, so aside from my sticker, I don't know what it is. Yeah, yeah, MSDS... But I still don't know what it is, but I know you should seek it out. It's the colour and consistency of crystallized honey. I hope that helps a bit....
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Re: Sticky fuel primer on the Cessna 180

#3 Post by photofly » Mon Aug 17, 2015 2:48 pm

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TeePeeCreeper
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Re: Sticky fuel primer on the Cessna 180

#4 Post by TeePeeCreeper » Mon Aug 17, 2015 5:04 pm

I'll probably attract the ire of many here but a small drop of W-100 has always worked for me...

All the best,
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GyvAir
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Re: Sticky fuel primer on the Cessna 180

#5 Post by GyvAir » Mon Aug 17, 2015 7:20 pm

PilotDAR wrote:There is a gasoline proof grease which is used for this. A friend gave me a film container full twenty years ago, and each annual, it gets a smear. It works very well. Unfortunately, it's not in the original container, so aside from my sticker, I don't know what it is. Yeah, yeah, MSDS... But I still don't know what it is, but I know you should seek it out. It's the colour and consistency of crystallized honey. I hope that helps a bit....
Sounds like Sealube:

https://www.aircraftspruce.ca/catalog/c ... kkey=16530

Just a dab will do.. hence your film container lasting 20+ years!
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longjon
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Re: Sticky fuel primer on the Cessna 180

#6 Post by longjon » Fri Aug 21, 2015 8:05 pm

I wouldn't use those products to lube something, they're for putting on tapered pipe threads when you put a fitting into a metal case. They're sealant not a lube.
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Re: Sticky fuel primer on the Cessna 180

#7 Post by GyvAir » Fri Aug 21, 2015 9:20 pm

longjon... You're right, Sealube doesn't have fantastic lubrication properties, but it does have some. It does have the advantage though of not being prone to washout in avgas, which with most other lubes I've seen tried in primers, leaves the o-rings essentially dry after a few pumps.

Never tried it, but this is what comes in the primer overhaul kits that Aircraft Spruce sells:

http://www.aircraftspruce.ca/catalog/cs ... kkey=17452
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Re: Sticky fuel primer on the Cessna 180

#8 Post by longjon » Sat Aug 22, 2015 7:00 am

I was referring to Sealube , looks like the other product is specifically for that
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Re: Sticky fuel primer on the Cessna 180

#9 Post by iflyforpie » Sat Aug 22, 2015 11:17 am

I've always used Sealube. Got a can that looks like it is from the 1960s or 70s and is still 80% full. Yes, it doesn't have the greatest lubricating properties, but it is way better than a sticky primer and seals very well too. I use it on pipe threads and rubber hoses and gaskets as well and rarely have a problem with fuel leaks.
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longjon
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Re: Sticky fuel primer on the Cessna 180

#10 Post by longjon » Sat Aug 22, 2015 12:14 pm

Good to know, thanks for the info
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GyvAir
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Re: Sticky fuel primer on the Cessna 180

#11 Post by GyvAir » Sat Aug 22, 2015 3:02 pm

longjon wrote:I was referring to Sealube , looks like the other product is specifically for that
I was talking about Sealube as well.

I've never used the Seal Lube (two words) silicone product in the link I posted. Perhaps someone will give it a try and get back to us in a year or so (or a week) with the results.

As far as silicone based lubricants goes, I've seen DC-4, DC-55, DC-111 all tried in primers, generally with fantastic success that lasted about a week, plus or minus, before the trouble started up again.
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Re: Sticky fuel primer on the Cessna 180

#12 Post by hangarline » Tue Aug 25, 2015 12:24 pm

PilotDAR wrote:There is a gasoline proof grease which is used for this.
The stuff you are looking for is MIL G 6032D (Royco 32). It is a grease that is used in fuel applications such as the tapered fuel shutoff valves, and Piper fuel selectors and works very well on the Cessna primers.
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Re: Sticky fuel primer on the Cessna 180

#13 Post by GyvAir » Wed Aug 26, 2015 7:43 am

hangarline wrote:MIL G 6032D (Royco 32)
Can't say I've heard of that one. It does appear to meet the requirement.
Looks like the Royco 32 isn't made anymore, but EZ Turn Lubricant is made to the same mil-spec and is available through the usual sources.

http://www.eaavideo.org/video.aspx?v=2520200714001
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