Injection pump is mounted on the "right" side of a D333 and on the "left" side of a D318. These directions are as if the engine is mounted in a dozer and you're sitting in the operator's seat. The D333 also does not have a separate intake manifold. This is cast in one piece with the head and a plate of steel bolted along the top of it to allow access to the passageway. (I unbolted that cover on a head I removed from a used engine I bought and found a substantial shop towel sucked into the intake runner of #1 cylinder. I wonder if whoever ran that engine last had any clue what the problem was!)