Engine - Noises Idling at Normal Operating Temperature

NO:
EG005-96

Title:
1MZ-FE ENGINE MAIN BEARING CHANGES

Models:
ES 300

Date:
JANUARY 31, 1997

Introduction
To reduce internal engine noise when idling at normal operating temperature the following changes have been made;

^ No.1 and No.4 main bearing oil clearances have been reduced by installation of thicker bearings having marks that are 2 higher in number than the original bearings installed on vehicles prior to production change.





Production Change Information





Repair Procedure

Replace both No.1 and No.4 main bearings with those having marks 2 higher than number on back of original bearings (illustration).

NOTE: See Repair Manual for details regarding disassembly & reassembly. If original bearing numbers are not clear, adjust clearances within 0.025mm - 0.030mm (0.0010 -0.0012 in.) using plastigage.





Warranty Information





Replacement Parts Information

The following table indicates appropriate bearing part numbers for use on TMM and TMC produced vehicles.