Evaluating Cylinder Bores - Mercedes-Benz 603 Service Manual

valuating cylinder
removed
Prechambers
Piston
Cylinder
01.10 - 02011
bores
in cylinder to be tested, move to bottom dead
center.
illuminate cylinder with illumination unit and
check visually for damage; for this purpose
insert the probe (01) of the illumination unit
through the precombustion chamber bore into
the cylinder.
Note
When inspecting differentiate between " Optical
stripes" and " Scoring" . "Optical stripes" can
result from the ring gap. if honing marks are still
visible, the engine is okay. "Scoring marks"
honing marks no longer visible, repair engine.
EXIT