MGB Rocker bracket question

[Age]

Hi Everyone. I had a question concerning the rocker bracket on my 1974 MGB. I recently replaced a few rockers. I noticed while reassembly that on the top of the end rocker bracket there is a small (1/4?) threaded bolt that screws into the hole on the top of the rocker. It's held in place by a

lock plate. I did not pay attention when I dismantled the rocker and shaft how far deep the bolt is threaded. I checked with the supplier and also the shop manual but there was no info. Anyone know how deep I need to screw the bolt in? Also any idea what the purpose is? Seems the deeper you thread it the less oil will flow through the shaft? Any info appreciated. Thanks.

 

[YakkoWarner]

I don't recall ever noticing that little detail before - next time I am out at the shop I am going to have to take a look and see if mine has that. Also have no clues on its purpose or how to set it up.

 

[Age]

It's covered by a lock plate and nut. Wondering if it's a way to check oil flow. I looked at some photos from a manual and seems like it's screwed all the way down. Guess that's what I'll do. Thanks for getting back.

 

[BobHaskell]

I would guess that it keeps the shaft from rotating.

 

[Age]

I would guess that it keeps the shaft from rotating.

I think you nailed it. I was looking at a different workshop manual and it seems to indicate that. Thanks for getting back to me.