rocker shaft post query

[colinh]

People,

Does anyone recognise this thin shim / tube inserted into one of the rocker shaft posts.

As it happens its post #1, through which the oil feed passes, and the hole with the insert is the one which connects with the shaft bore - locking the shaft in place.

Only this rocker post has it.  Nothing shown in the manuals.

Is it a bodge ?

[TheMechanicnz]

My car has one as Well, not sure what it's for though. Did look into it to much

[Scarlet]

it locates the shaft, the rocker shaft has an indent in it

[TheMechanicnz]

Ah that's it, I thought there was a dowel pin instead.