944 S L4-2479cc 2.5L DOHC (1987)
Connecting Rod: Technical Service Bulletins
Connecting Rod Nuts - Incorrectly Made
May 8, 1990
Subject:
Connecting Rod Nuts
Incorrectly Made
Model
Group
9445 928
1
Part Identifier
Number
1340
9014
ATTENTION: Service Manager/Service Technician
Models Affected:
924S, 944, S, S2, Turbo, 928, S, S4, GT
Concern:
Connecting rod nuts supplied as spare parts may be improperly manufactured. The threads of the nut may not
have been cut at right angles to the nut contact surface. If installed, the tightening torque of these nuts may
reduce over time.
Important:
All connecting rod nuts must be checked for proper seating prior to installation in an engine. All
connecting rod assemblies supplied as spare parts must be disassembled and the nuts checked in
the same manner.
Parts Information:
Rod Nut: PN 928 103 172 02
Connecting Rod:
PN 944 103 008 00102
Connecting Rod:
PN 944 103 001 00/01
Connecting Rod:
PN 928 103 006 00
Connecting Rod:
PN 928 103 008 00
Connecting Rod:
PN 928 103 014 02
Figure A
Work Procedure:
Using a connecting rod assembly (without rod nuts) thread the connecting rod nut onto the rod bolt. At the point
when the rod nut begins to contact the rod cap, check for tilting of the contact surface of the nut (see Figure A).