Engine - Main Bearing Oil Clearance/Selection Revision
AERIOSection Title: Engine
TSB No. TS 04 05175
Division: Automotive
Category: Technical
SUBJECT:
MODIFICATION OF MAIN BEARING OIL CLEARANCE AND THE BEARING SELECTION PROCEDURE
MODEL(S):
AERIO (RH420/RH423)
YEAR:
2002-2005
CONDITION:
Oil clearance of the main bearings has been modified.
CAUSE:
N/A
CORRECTION:
The crankshaft main bearing oil clearance for the J20 and J23 engines has been modified as well as the main bearing selection procedure.
Please update your service manual according to the following specifications and the four attached Service Manual pages.
OIL CLEARANCE SPECIFICATIONS
The oil clearance of the main bearing has been changed to the specifications shown.
CRANKSHAFT JOURNALS
The number that indicates the crankshaft journal diameter has been changed from three stamped numbers ("1" through "3") to six stamped numbers ("4" through "9") as shown in the figure.
CRANKSHAFT MAIN BEARING
According to the change in oil clearance, new combinations of the crankshaft main bearings have been added as described in "PART SUPPLY DATA".
NOTE:
The late crankshaft is usable instead of the early crankshaft if the main bearings are selected according to the procedure in the page.
SERVICE MANUAL UPDATE
AFFECTED SERVICE MANUALS:
NOTE:
This update will reflect in future printings of the service manuals. If the reprint date on the inside back cover of the manual is later than the issue date of this bulletin, the manual will have been corrected.
Please attach additional Service Manual pages into the appropriate Service Manual section.
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