Crankshaft Main Bearing - End Play Specification Update

9223buick02

Bulletin:
90-6-9

Date:
Sept. '90

Ref. No.:
90-185-6

Corp. Ref. No.:
036005R


SUBJECT:
SERVICE MANUAL UPDATE - SECTION 6 - ENGINE SPECIFICATIONS
2.5L (CRANKSHAFT MAIN BEARING CLEARANCE AND END PLAY SPEC.)

MODELS AFFECTED:
1989 - 90 SKYLARK WITH 2.5L (U) ENGINE
1989 - 90 CENTURY WITH 2.5L (R) ENGINE


SERVICE MANUAL UPDATE

When measuring the crankshaft main bearing clearance or end play on the 2.5L engine, use the following specifications:

VIN R
Crankshaft Main Bearing Clearance
0.013 - 0.056 mm (0.0005 - 0.0022")

Crankshaft End Play
0.13 - 0.26 mm (0.0051 - 0.010")

VIN U
Crankshaft Main Bearing Clearance
0.013 - 0.056 mm (0.0005 - 0.0022")

Crankshaft End Play
0.15 - 0.28 mm (0.0059 - 0.011")

THIS INFORMATION APPLIES TO THE FOLLOWING SERVICE MANUALS:

1990 Buick Century Page 6A1-42
1989 Buick Century Pages 6A1-22 and 6A1-23

1990 Buick Skylark Page 6A3-43
1989 Buick Skylark Page 6A3-39