The part is installed longitudinally in the engine block. It operates the valvetrain via tappets, pushrods, and rocker arms, controlling the opening of the intake and exhaust valves and—depending on the engine configuration—the operation of the injectors.
Important: do not confuse part 4004556 with 4004556-20, which some catalogs identify as a different camshaft. To order the correct part, you must compare the number with the engine’s CPL and ESN.
Balance Shaft Bearing Set Cummins Engine ISM – Engine QSM
Important: The socket must be installed with pressure hardware, respecting the orientation of the lubrication orifices. After installation it may be necessary to check the internal diameter, alignment and shape of the lever shaft. You don’t have to install it directly.
They appear to be applied on some Komatsu and Doosan-Daewoo teams that use these engines. The definitive compatibility must be confirmed via the ESN.