912iS oil pump inlet adapter - retaining compound?

Hi Steve

I think you are referring to the inlet fittings, metric or UNF, for the oil line.  There is no outlet, that would be the filter into the engine.  

That said 648 is green and suited for this purpose.  This recommendation has been out for a while.  A look at the Henkel website, the people who make it, it is ideal for preventing loosening and leakage from shock and vibration.  It is a green, low viscosity, high-strength, anaerobic-curing retaining compound.  The other thing about it is that it will work even with passive substrates like stainless and plated surfaces.  The other big thing is that it works with minor surface contamination of oils without a primer or cleaner.  It works up to 180C (355F) temperature also.  

To be clear, the fittings it is used on have a copper compression washer between the fitting and pump.  The Loctite is applied to the thread when you mount the hose to the pump.  I know that the drawing in the heavy manual is a bit small but that is what it shows.

Cheers

Hi Wizard,

Thanks for the speedy response. I'm new to this, but I was trying to use the terminology from the installation manual (attached below). I'm moving the adapter from position 4 to position 5, and the drawing refers to that as the outlet fitting. 

Also, the Heavy Manual says to use Loctite "if necessary". Can you help clarify what that means? Is it required, optional, or recommended? I have no idea how to determine if it's "necessary". 

Best,

Steve