Ciera V6-231 3.8L (1986)
Connecting Rod Bearing: Technical Service Bulletins
Cranshaft Main/Rod Bearing - Revised Clearances
NUMBER:
91-T-27
CORP.REF.NO: 006107
DATE:
November 1990
SECTION:
6A
SUBJECT:
SERVICE MANUAL UPDATE NEW BEARING CLEARANCE SPECIFICATIONS CRANKSHAFT MAIN BEARING AND ROD BEARING
MODELS/YEARS:
ALL 1985-91 MODELS WITH 3.OL, 3300, 3.8L OR 3800 ENGINE (VIN CODE E, L, N, A, B, 3, C)
The following revised bearing clearances should be used when servicing main bearings and connecting rod bearings on the engines listed above. Note
that the clearances are the same for main and rod bearings.
CRANKSHAFT MAIN BEARINGS
Bearing to Journal Clearance
0.020 - 0.055 mm.
(.0008 -.0022 in.)
CONNECTING ROD BEARINGS
Bearing to Journal Clearance
0.020 - 0.055 mm.
(.0008 -.0022 in.)
