C15 primary drive oil level - question rephrased

[cee-b]

To put it slightly differently than my first post about this, as there were no responses.

I have followed the directions from the Service Sheets regarding primary drive oil level.

If I remove screw M (the second screw back) which is identified as serving as the level plug, no oil comes out even if I overfill it.

If I remove the screw behind that, it drains pretty much the entire amount that I put in.

Other than draining the case and then putting in a measured amount (1/4 pint) every time, I am unable to check the level.

Can anyone advise please?

[MICKREEVES]

You could remove the case to check that the level screw has a cutaway for the oil to issue.
Could be blocked or the wrong choice or screw or wrong outer case!
Mick

[cee-b]

You could remove the case to check that the level screw has a cutaway for the oil to issue.
Could be blocked or the wrong choice or screw or wrong outer case!
Mick
[/quote

Thanks for your suggestions Mick.

I'm nor sure what you mean by the reference to a 'cut away' in the level screw. As I understand it, the screw merely acts to plug the drain hole - doesn't it?

I have explored the screw hole with a wire and it appears to 'blind'

If it is the wrong outer case, which is quite possible, it must still have a level plug somewhere. The question is, where?

[JulianS]

This shows what the cutaway in the outer case looks like - A10 part but principal the same on C15.

Later unit singles, about 1969/70 had an obvious level plug on the outside fo the case.

[cee-b]

Thanks Mick and Julian,
I'll follow the advice and take the cover off to check what is going on from the inside

[MICKREEVES]

I think the rupert ratio book explains this
Mick