Prop Oil line AD

[JohnR]

Help,  I have a 59 Mooney M20A.  My mechanic noticed I still have the old aluminum prop oil line.  I ordered Lycoming part 75165 oil line but it doesn't fit my M20A  There is another part number listed by Lycoming for the O360 A1A (75166).  Does anyone know if this is the correct part.  My Woodward Governor has a straight fitting  and the old line comes straight out and 90deg bends forward.  The part 75166 is designed for a 45deg up fitting out of the governor and  wouldn't clear the engine mount diagonal brace.  I don't want to spend over $300 and get the wrong part again.  Any help would be appreciated.

jr

[kerry]

Are you sure the oil line is aluminum.  Mine is steel and it had aluminum fittings.  I changed my fittings with steel ones I ordered from spruce.  I  would double check your oil line with a magnet.   Seems like I also remember a hose kit that can be retrofitted. 

[N601RX]

Are you sure 75165 is the correct part number for the A1A?  The manual I have shows 75166 and 75167 as correct for the O360-A1A engine. Also find out if the engine is narrow or wide deck.  They use a different part manual.  Lycoming tech support has always been good about resolving issues like this.

[jamesm]

I can't speak for the M20A or the O360-A1A engine but part number listed in the lycoming parts catalog don't do it justice.

On my '67C with an O360- A1D  wide deck engine the parts catalog didn't tell which part number for the oil governor line had what shape  associated with which part number. We had both part numbers  but had to go with least interference  it was resting  on top of front passenger foot well so  we had to tweak it  to get clearance.

[JohnR]

You are right N601RX, the parts are 75166 and 75167.  The part I bought is 75167 and it doesn't fit, so I think I need 166, but not sure how to tell if the line is steel.  Stainless Steel won't attract magnet, I will check with magnet anyway though, Thanks for the replys

[JohnR]

Kerry you saved me a bunch.  I just checked my line with a magnet and it is definitely steel, just the fittings are aluminum.  Thanks for the advice,  John R

[kerry]

The m20a would have a narrow deck engine

[N601RX]

Both the pn's listed above are for a wide deck.   I think you have the incorrect manual. You can verify by looking at the cylinder hold down nuts. If narrow deck then they will use an internal wrench, otherwise it's a normal hex nut.  The A1A has been produced as both narrow and wide deck. 

[Guest]

The oil transfer line is stainless steel in both case, pre and post AD.  The nuts and the fittings in the pre AD are aluminum and are to be steel in the post AD.  Use of a magnet should confirm.

Clarence

[JohnR]

Thanks Clarence, my line is steel, but the nuts and fittings are aluminum. 
Also my engine is narrow deck (internal wrench hold down nuts).  So do you know what the part number is for oil line with steel nuts for narrow deck engine.  I haven't found any place which has the 75166 oil line in stock, but A/C spruce lists it for $325 ouch!  Sounds like that isn't the correct part anyway.

[Guest]

15 minutes ago, JohnR said:

Thanks Clarence, my line is steel, but the nuts and fittings are aluminum. 
Also my engine is narrow deck (internal wrench hold down nuts).  So do you know what the part number is for oil line with steel nuts for narrow deck engine.  I haven't found any place which has the 75166 oil line in stock, but A/C spruce lists it for $325 ouch!  Sounds like that isn't the correct part anyway.

I can check tomorrow at work.  Do you know if the line is 3/8" or 5/16"?

Clarence

[JohnR]

So I found the parts manual for the narrow deck O-360, its Lycoming parts catalog PC-106.  On page 2-3 the table lists 3 prop governor oil lines for the A1A
. Parts 68532, 71622, 71612.  Any idea which one is for the Mooney A,B,C???

[JohnR]

So I found the parts manual for the narrow deck O-360, its Lycoming parts catalog PC-106.  On page 2-3 the table lists 3 prop governor oil lines for the A1A
. Parts 68532, 71622, 71612.  Any idea which one is for the Mooney A,B,C???

[JohnR]

I put a mic on the line and it is 5/8inch

[N601RX]

Check Aircraft Specialties, they have good prices and a large inventory.

http://www.aircraft-specialties.com/search.php?search_query=71622&x=0&y=0

Also check with Aero In Stock. If unsure of pn email Lycoming support and they can tell you which one you have.

 

[MB65E]

You could just run a Teflon hose from the Govoner to the front case. A new Teflon line, with steel fittings was what I went with. 

-Matt

[RonM2OC]

Which AD is this one please?

[Guest]

4 hours ago, RonM2OC said:

Which AD is this one please?

Here is the AD, it effect Lycoming engines with rear mounted governors and constant speed props.

http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgad.nsf/0/D17C07A9D76E6AAA8625684F006E5ADC?OpenDocument

 

Clarence

[Guest]

10 hours ago, JohnR said:

I put a mic on the line and it is 5/8inch

John,

If the nuts are 5/8" the line should be 5/16", if the nuts are 11/16" the line should be 3/8".  I'll look today at work.

Clarence

[JohnR]

Sorry I miss read my calipers last night, the line is 5/16 OD and nut 5/8

[JohnR]

I contacted Lycoming Tech support and they did some research and replied that Part 68532 should be the correct part for my Mooney, so now to find one.

Regards, John R