Note. On rings that have been in use, the marking may not be visible. Place the removed rings in the sequence of their position and cylinder numbering.
Replacing piston rings must be carried out in the same order as for engines «M54» .. «N62». During operation, the rings have run in to the pistons, they should be folded and installed with reference to them. Check the values of the axial clearance and clearance in the lock of the ring, see. «Specifications».