Engine - Modified Main Bearing Oil Clearance/Selection

Section Title: Engine

TSB No. TS 14 10285R

Division: Automotive

Category: Technical

SUBJECT:
MODIFICATION OF MAIN BEARING OIL CLEARANCE AND THE BEARING SELECTION PROCEDURE

MODEL(S):
VITARA (SQ420/SQ625L), GRAND VITARA (SQ625W) AND XL-7 (JA627)

YEAR:
1999-2005

REVISION:
Main bearing oil clearance specification and main bearing selection chart in the Service Manual has been updated on the H25 and H27 engines. Please also see attached pages 1 thru 4.

CONDITION:
Oil clearance of the main bearings has been modified.

CAUSE:
N/A

CORRECTION:
The crankshaft main bearing oil clearance for the H25 and H27 engines has been modified as well as the main bearing selection procedure.


























Please update your service manual according to the specifications and the eight Service Manual pages shown.

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.








OIL CLEARANCE SPECIFICATIONS

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" as shown.

NOTE:
The late crankshaft is usable instead of the early crankshaft if the main bearings are selected according to the procedure in the pages previously shown.





SERVICE MANUAL UPDATE





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