info on international 9 liter rocker box gaskt replcment

[adamanderr]

i have a 85 international with a 9 liter in it. the rocker box, 2 piece upper and lower gasket, leaks terribly so i took the valve cover off thinking the rocker box extension was a sleeve and would slide off around the rockers, instead it extends under the rocker shafts so i have to remove them too! i dont have a manual and there doesn't seem to be much info. im sure ive asked before and not looked in the right places but any help?

[adamanderr]

bump

[paul iossi]

IIRC, that's an ag tractor engine, check with your local CASE/IH tractor dealer for a service manual or info.