Oil Screen/Probe Fitting

[btbell]

On my A-65 there is a fitting bewteen the oil screen and the oil probe. Does anyone have an extra one or know where I can get one?

Thanks,
Brian Bell
NC43255
NJ

[zero.one.victor]

Re: Oil Screen/Probe Fitting

Check the oil temp gauge section in your Spruce catalog: p/n 95527 "oil temp bulb adapter" under ten bucks. But make sure the seat in the adapter matches the flange on your temp sensing bulb. Scott changed from a flat flange to a bevelled flange on their temp gauge sensors & a bevelled seat on their adapters a couple years ago. If the flange & seat aren't a match you could damage the flange & incur a (possibly catastrophic) oil leak.

Eric

[Richard Boyer]

Re: Oil Screen/Probe Fitting

or a very very very messy oil leak.

Not sure how I know that......

Richard Boyer
N95791

[Victor Gisclair]

Re: Oil Screen/Probe Fitting

Sounds like you learned from the school of hard knocks also

[Richard Boyer]

Re: Oil Screen/Probe Fitting

Oh yeah. I have had several, one a real doosey on the way to Oshkosh this year. I usually only talk about that one after imbibing adult beverages.

I hate to admit this one, but I once forgot to put the dipstick back on.

I was doing a low pass on our runway and one of my neighbors said there was a black streak down the side of the plane. So, I landed as soon as possible. I still had lots of oil, but MAN what a mess!! It is truly amazing how half a quart of oil can look like 4!

Sorry for the thread creep..................

Richard Boyer
N95791

[Victor Gisclair]

Re: Oil Screen/Probe Fitting

Richard, I once, and I also don't like to talk about this one, taxi right into my pond. Now that will get your attention.

[af1zaf1z]

Re: Oil Screen/Probe Fitting

I managed to ruin the adapter nut between the oil screen and oil temp bulb--( A-65-8)_The replacement from Acft. Spruce looks to be threaded OK ( 5/8 18 ) but the inside diameter is too small to insert the old bulb. Inside measurement of old part looks to be about7/16, and the part from Acft. Spruce has an inside of about 3/8. ANyone have one, or can put me on the trail??
\Many thanks Mark Munson N44103 #9903

[NY86]

Re: Oil Screen/Probe Fitting

Contact the gauge (or sender) manufacturer. They're all a little different and using the wrong one *will* ruin the sender.

[af1zaf1z]

Re: Oil Screen/Probe Fitting

John Thanks for the info- I'm now on the third try, still leaking oil out through the capillary tube. It seems there a number of adapter nuts, all slightly different. I still have the original part, which I guess will have to serve as a template to machine something to the original spec. Mark

[Forrest Barber]

Re: Oil Screen/Probe Fitting

The after market adapters vary. The larger hole inside will allow the capillary tube to shift off and oil comes out very quickly , Some have a tapered seat and some straight , they must match the tube , I will pull my adapters and check dimmensions to see what I have ..... right after next damn storm ... e-mail me direct

[Hank Jarrett]

Re: Oil Screen/Probe Fitting

Forrest,
This would probably be a good topic for a thread so we can make sure we don't have any planes out there with screwed up "adapter to adapter to adapter" oil fittings. If somebody has a messed up oil temp or pressure fitting and they go down with a seized up engine from oil loss we could end up loosing a tribe member and have another strut like mess.

I guess what we need is a thread where we can post what the different fittings SHOULD look like and what to look for on our next pre-flight to make sure one of us doesn't have the wrong configuration. Probably be a good time to make sure everybody has the restriction in their oil pressure lines too. I have heard of numerous people finding the change missing when they open up the system.

If anyone has some good pictures of a correct setup for the rest of us to use for an informal inspection how about starting a thread with them to share. I might be able to take some pictures this weekend if everyone promises not to laugh at my nasty looking engine compartment.

Lets catch any problems ourselves before the FAA tells us we have to!
Hank

[NY86]

Re: Oil Screen/Probe Fitting

Actually, it's old news. Check out this link. It was like pulling teeth just to get Scott to acknowledge there was a potential issue!

[flyguy]

Re: Oil Screen/Probe Fitting

Thank you John. Downloaded article as I presently have a dead Scott.

For some reason the one I have fit and sealed well, but there is a short section of tiny capillary tube connecting the 5 foot tubing to the sensor bulb.
Needless to say a few times removed and it collapsed, or at least the gauge failed to indicate and that is my best guess. (No visible damage without using a magnifier.)

I'm about ready to say to-hell-with-it, and look for a spot to monitor the temperature with a Cu/Constantin thermocouple and digital meter, leaving the Scott gauge in place to please you know who.

Darryl

[af1zaf1z]

Re: Oil Screen/Probe Fitting

The leak is stopped, and many thanks to all who showed interest, especially anyone who spent any time digging around in a freezing storage shed looking for a part!! Replacement adapter was a bit longer than the original. We took a few threads off the end to allow the temp bulb to go in and seat against the internal flange in the adapter. Runup and test flight all OK. I have good pictures of the failed adapter-will send out private email if anyone wants them- there did not appear to be much metal left in the area of failure, and conceivably could have happened in flight. Mark N44103

[barnstmr]

Re: Oil Screen/Probe Fitting

Excellent post... Thanks for Brian for bringing it up. Thanks Mark for mentioning the leak... and John for posting the link. Great to have the forum members sharing info to keep each other safe and save headaches. Good stuff