Affected Component: ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY

Date Published
FEB 01, 2013
NHTSA TSB #
10051992
TSB Document
Summary
MERCEDES: DUE TO LEFT AND RIGHT SECONDARY CHAIN TENSIONERS, OF THE CHECK VALVE, BEING INSTALLED AND PRESSED DEEPLY INTO CYLINDER HEADS, THE OIL SUPPLY CAN NOT BE ENSURED FOR CYLINDER HEAD, AND CHECK VALVE, OF LEFT AND RIGHT SECONDARY CHAIN TENSIONERS, MUST BE REMOVED. MODELS 2013 207(E350, 550), 212 (E350, 550, 63), 218 (CLS550, 63), 221(S550, 600, 65, 63, 400, 450, 350), 231 (SL). *PE