Beretta L4-121 2.0L (1987)
Piston: All Technical Service Bulletins
Engine - Piston-to-Bore Clearances
Number:
88-212-6A
Section:
6A
Date:
APRIL, 1988
Subject:
PISTON-TO-BORE CLEARANCES
Model and Year:
1982/88 CAVALIER, CORSICA, BERETTA WITH L-4 ENGINE 1982/88 S/T TRUCK WITH L-4 ENGINE
TO:
ALL CHEVROLET DEALERS
Service manual specification for the piston-to-bore clearance needs to be corrected. Following is the current model year correction, along with a
restatement of past model years:
1987/88 Cavalier, Corsica, Beretta (VIN 1 Engine):
Piston-to-bore clearance
=
.00098" -
.0022"
(.025 mm -
.055 mm)
Piston-to-pin clearance
=
.0004" -
.0009"
(.010 mm -
.022 mm)
1982/86 Cavalier (VIN G and P Engines):
1982/86 S/T Truck (VIN Y Engine):
Piston-to-bore clearance
=
.0007" -
.0017"
(.017 mm -
.043 mm)
Piston-to-pin clearance
1982 - 1984
=
.00026" -
.00037"
(.007 mm -
.009 mm)
1985 - 1986
=
.0002" -
.0007"
(Production)
(.005 mm -
.018 mm)
1985 - 1986
=
.0004" -
.0009"
(Revised Service Parts)
(.010 mm -
.022 mm)
Please take appropriate action to correct your service manual and inform your service personnel.