Regal V6-191 3.1L VIN M SFI (1995)
Piston Pin: All Technical Service Bulletins
Piston Pin Clearance Specification - Revision
FILE IN SECTION: 6 - Engine
BULLETIN NO.: 57-61-23A
DATE: October, 1995
SERVICE MANUAL UPDATE
SUBJECT:
Section 6A5 - Revised Piston Pin Clearance Specification
MODELS:
1995 Buick Century, Regal, Skylark
1995 Chevrolet Beretta, Corsica, Lumina, Monte Carlo
1995 Oldsmobile Achieva, Cutlass Ciera, Cutlass Supreme
1995 Pontiac Grand Am, Grand Prix
with 3100 Engine (VIN M - RPO L82)
This bulletin is being revised to change section number and to change piston pin specifications Please discard Corporate Bulletin Number 57-61-23
(Section 6 - Engine).
There has been a mid-year change in the piston pin clearance. It has been reduced to prevent piston pin noise (Refer to bulletin 57-61-24).
PISTON PIN SPECIFICATIONS
Engines produced prior to January 1995
0.0126 mm - 0.0245 mm (0.0005 in. - 0.0010 in.)
Engines produced after December 1994
0.0096 mm - 0.0216 mm (0.0003 in. - 0.0008 in.)
