Checking the basic position of the camshafts (Mercedes-Benz Vito W638)

1. Set the piston of the first cylinder to the TDC position.

2. Lock the intake camshaft. Insert pin 3 through the hole in the first camshaft bearing cap into hole A in intake camshaft pulley 2.

3. The two marks B on the camshaft pulleys 1 and 2 must be located opposite each other and the marks on the camshaft and the camshaft bearing cap must be aligned (arrows) (see figure 5.24).