Filling a supercharger with oil.

[eltax91]

Hi all

I am currently in the middle of fitting a supercharger to my mx5 weekend toy. (Then the bloody sun came out)

The instructions with the service kit I have are clearly for a professional workshop as the say:-

Remove supercharger
Vacuum out the old oil (yeh right :hehe;)
Remove nose
Replace coupler
Refit nose
Remove filler screw
Fill up with oil. Up to the bottom on the filler hold thread
Replace filler screw
Refit supercharger

Now, that's all fine and dandy and when the nose comes back from the engineering place (I rounded the filler screw, oops) I'm comfortable with what remains.

However, it doesn't mention whether the 'charger should be horizontal or vertical when filling it. Vertical would leave it completely full with oil, horizontal, from the location of the filler, about 2/3 full. So, question is, which way?

I assume it's horizontal and you fill it like you would a diff, but now I'm concerned enough to check!

Thoughts?

[Richyvrlimited]

I assume this blower is an Eaton M/MP 45 or MP62.

In which case you want to fill it with 110ml of oil. Filling to the filler hole, (you'd do this with the blower horizontal), is way too much oil, you'll end up forcing it past the main bearing seal.