Crush washers on oil screen/oil temp probe ?

[piperboy84]

2 questions regarding the crush washers on engine oil ports.

1.Seam on the inside (engine block)side or outside
2. What is the proper torque, I read somewhere finger tight till contact then 135 degrees?

Any thoughts?

[longer ron]

I suppose the info should be in the book of words -
I changed the oil on a peugeot 306 HDI the other day - I put the 'seam' under the bolt head and tightened carefully (you can feel the washer crushing) and then gave it a technical tweak :)

But for aviation applications there should be a torque loading for a crush washer - and they are usually a fairly low torque loading.

As a rule I do not try to remember torque loadings but ISTR that Canberra brake banjo crushwashers were 15 Lb Inches.

[Mark 1]

1. The seam goes against the engine boss and the unbroken face against the plug's flange.

2. Depends on size AN900-16 to -20 then it's 135 degrees (1" to 1.25" i.d.).

That's according to the Lycoming Overhaul Manual Table iii

[Tinwacker]

Two flats and a tad, or a white knuckle....

Learning all the time here!!

TW