F&M oil filter installation

[Kurt Aichele]

Just purchased an F&M oil filter and adapter, # C0300 for our 0300D. We found that the oil temperature probe (not original) was too long to fit into the end of the new F&M oil filter adapter (diameter was fine). I called F&M and they referred me to El Reno Aviation for an adapter that would allow the oil temperature probe to be inserted into the F&M oil filter adapter. I was told by El Reno that I do not need the adapter, but to remove the coarse screen, drill and tap the end and insert the oil temperature probe into this hole, then insert a plug into the existing hole provided in the end of the F&M oil filter adapter, since this will not be used. The El Reno Rep said this would be covered under the STC. Has anyone encountered this problem? Does this procedure sound right??

[GAHorn]

No...it does NOT "sound right". The STC CO-300 installation instructions do not contain any guidelines to alter the location of the oil temp probe other than in the end of the adaptor. Since FM Enterprises offered a solution ..and since it is THEIR STC after-all... I would follow their suggestion. (If El Reno has an approval basis for changing the location of the oil temp probe in conjunction with this STC... ask them to send you the instructions in writing. Keep in mind that "Once-Upon-A-Time" El Reno was perhaps the sole distributor for the FM Enterprises filter adaptor and that their installation had "issues" which were addressed by FM Enterprises when they began marketing their products directly to owners. There may be political issues between the two companies, as El Reno was left with a large inventory of the earlier product. El Reno is a good company and I recommend them for many items, but this particular mod may not have been their best experience.)

What oil temp indication system do you presently have that does not fit?

[Kurt Aichele]

Thanks for the advice, George. I am not sure of the gauge mfr., but it gives oil temp, oil pressure, and fuel pressure all in one gauge. I'll check on mfr. this weekend when I get back to the airport.

[GAHorn]

Perhaps this is what you have???

If so..contact Spruce 877-477-7823 and ask if they have the necessary adaptor to fit your oil temp probe to your original 5/8-18UNF x 5/8-18UNF adaptor nut.

Or perhaps your unit can use the MS28034-1 Rochester proble?

Or see if your present unit can utilize Westach's sender:

[Kurt Aichele]

Not the one, George. It's bulb is 4 3/16" long. I'll get the particulars this weekend. Can't believe the El Reno Rep would want someone to drill and tap a hole in the end of the coarse screen cap, considering it is smaller and there is less material there than in the fine screen cap, which is tapped at the factory. We may end up with a different gauge, since we really want to install a filter.

[cessna170bdriver]

Kurt,

There is a suction screen that comes already threaded for a plug, and a temp probe adapter that fits those threads. That is what I had to find for mine when I was using the Cessna oil filter adapter, which does not have a provision for oil temperature. See photo below. Sorry, I don't have any part numbers handy. If you go that way, you will notice lower indicated oil temperature in that location.

It may end up being cheaper just to find the correct temp probe.

BandC_Installed.jpg

[Kurt Aichele]

Miles,
Thanks for the info. This looks exactly like what the El Reno rep was saying, except we are to drill and tap the hole. I'll have to look around and see if I can find the suction screen that aleady is tapped as your picture indicates.

[GAHorn]

The scavenge screen (item 30) which accepts the probe is TCM PN is 633272 and the copper gasket(s) (items 29, 31 are AN900-16 and -10. (DISREGARD the PN listing for this page as it is in error, so I did not post it...use the PNs listed above.)
Here's the "Old Style" cover:

TCM IPC Fig 9 pg 16 cvr assy.JPG

Here's the NEW STYLE cover (THIS PN listing is CORRECT, notice the part nos are the same, but the item nos changed):

TCM IPC Fig 10 pg 18 NEW CVR.JPG

TCM IPC Fig 10 pg 19 CVR NEW.JPG

[Kurt Aichele]

Thanks for the numbers, George. Now I'll hunt around for the screen or drill and tap it myself.

[Kurt Aichele]

Miles,

Did you remove the screen when you inserted the oil temp probe into this location, or did you leave the screen in place?

[cessna170bdriver]

Miles,

Did you remove the screen when you inserted the oil temp probe into this location, or did you leave the screen in place?

The screen has to be there. I left it in place.

[juasiel123]

Thanks for the numbers, George. Now I'll hunt around for the screen or drill and tap it myself.

Hi,, was wondering if you found the suction oil screen pn 623272 with the hole all ready drilled for the probe to be inserted?

could you share with me where did you find it and how much it cost you?

I need to replace my suction oil screen and following the Parts Catalog that I have for the O-300, but bought the wrong part (A20878) and received a suction oil screen with no hole for the probe.

Any help I would really appreciate.

Juasiel

[n2582d]

Juasiel,
Looks like you accidentally typed in the wrong p/n. It should be 633272 rather than 623272. According to Continental SB 96-04 this has been updated to p/n 653986. Here's a picture of the difference:

Suction Screen.jpg

P/N 653986 is available from Air Suppliers for around $200. You'd have to call them to confirm that the cap is solid or tapped. What I would suggest is having the one you bought -- assuming it is the right size -- drilled with a 37/64" drill bit and then tapped with a 5/8"-18 nf3 tap. That will cost you around $15 plus shipping on Amazon. This is what Cessna says to do in AK172-112 when installing an oil filter adapter.

[juasiel123]

Juasiel,
Looks like you accidentally typed in the wrong p/n. It should be 633272 rather than 623272. According to Continental SB 96-04 this has been updated to p/n 653986. Here's a picture of the difference:

Suction Screen.jpg

P/N 653986 is available from Air Suppliers for around $200. You'd have to call them to confirm that the cap is solid or tapped. What I would suggest is having the one you bought -- assuming it is the right size -- drilled with a 37/64" drill bit and then tapped with a 5/8"-18 nf3 tap. That will cost you around $15 plus shipping on Amazon. This is what Cessna says to do in AK172-112 when installing an oil filter adapter.

Yep,, bad typing,, have big fingers,, ,,

According to the drawing, the P/n 653986 and the PN 653658 could be the same or they may be different in size? or what is the difference between them?

[n2582d]

Don't know how different they are but 653986 is for the O-300 and 659658 is for the O-360 series.