S 320 SWB (140.032) L6-3.2L (104.994) (1994)
Crankshaft Main Bearing: Technical Service Bulletins
Crankshaft Main Bearing - Coding System
REF. NO. 03/49
TO: OUR MERCEDES-BENZ PASSENGER CAR DEALERS
DATE: November 1994 (supercedes S.I. MBNA 03/4a, May 1993)
SUBJECT:
ALL ENGINES
CODING OF CRANKSHAFT MAIN BEARING SHELLS AND TOLERANCE MARKINGS
Due to manufacturing reasons and in the case of major engine repairs, the crankshaft main bearing shell code system is identified through various codes
and markings on the crankcase and crankshaft.
Tolerance markings of the upper crankshaft main bearing shells (with oil groove and oil bore)
^
Punch marks on the crankcase/oil pan mating face next to crankshaft journal bore (1, Figure 1).
OR
^
Color code located on crankshaft journal bore in crankcase (2, Figure 1).
OR
^
Color code on the crankshaft main bearing cap.
Tolerance markings of the lower crankshaft main bearings shells (without oil groove and oil bore)
^
Color code on the crankshaft counterweight next to journal bearing (3, Figure 2).
OR
^
Punch marks on the crankshaft counterweight next to journal bearing (3, Figure 2).