AJS & Matchless Owners Club

The other year I was concerned about oil feed to rockers and did a similar thing with the side off a Washing machine tabs tub. Took all of 15 minutes from start to finish.

Hit the kill button pretty quick when I saw the oil squirting from the little jets in the rocker box.

Then back on with the proper cover.

Johnny B

I took on board what Rob Harknett suggested, and made a new cover from polycarbonate today. I know it's not to everyone's taste but I like it


What intrigues me is why the pushrods rotate. I realise the need for this,(to even out wear and lubrication) but don't understand what makes them turn.

Can anyone please explain this?

I believe the tappet face is slightly angled by design for this very purpose. Not 100% on this though.

Plugsnpoints wrote:What intrigues me is why the pushrods rotate. I realise the need for this,(to even out wear and lubrication) but don't understand what makes them turn. Can anyone explain this?

As I understand it the valve cams contact the tappets off-centre in order that the tappet rotates to even out wear (i.e. distribute the wear over all of the tappet foot), therefore the pushrods (resting on the tappets) also tend to turn.

SPRIDDLER wrote:

Plugsnpoints wrote: The possibilities are endless. What next? An oil sight glass on the tank? (that would be useful, as you could see the oil return). A level indicator on my lunch box?

Hmm, maybe I'll make one for Thrifty Peter's wallet so in the Jampot beer tent he'll have no excuse for not buying a round. (I've already made a spare key )

Nev, you realise he's going to change the lock when he sees this don't you?