Mercedes-Benz 603 Service Manual page 159

Each piston is equipped with two compression
rings and one oil scraper ring. The first piston
ring groove is provided with a Niresit ring carrier.
178
179
Taper face ring with InsIde bevel, 2 mm
180
Rectangular ring, 2 mm thrck, runnrng
surface chrome-plated
Engine 602.91 starting 09189
The height of the ring groove for the rectangular
ring (180) has been increased from 2.0 to
2.5 mm.
Piston code 16 (Mahle co.)
17
Piston code
178
running surface chrome-plated
179 Taper face ring with lnstde bevel, 2 mm thrck,
running surface chrome-plated
180 Rectangular nng, 2.5 mm thick, running
surface chrome-plated
These pistons can also be installed in engines
with cylinder sleeves.
Engine 602.91
Temporary installation of pistons from Alcan co., piston code 12, KS co., piston code 14
Production breakpoint 03188
(Piston code 12, Alcan co.)
Model Engine
manual
transmission
201.126
061160 to
061260
not reglstered
03.10 - 31712
-179-
Engine end No.
automatic
transmission
012853 to
012867
/
Vehicle ident end No.
F
A
l
EXIT