Diesel Customer Information No.
312
Action Code:
At first opportunity
Connecting Rod
Bearing Shells
Occasion Introduction of modified connecting
rod bearing shells into serial
We would like to inform you that we have introduced a production
modified connecting rod bearing into serial production
for the product family L+V 32/40 and L+V 32/40CD. As
with the original bearing, this is also a bi-material plain DCI / 312 - January 2012
bearing.
Concerns
New Design MAN Diesel & Turbo four-stroke
engines 32/40, 32/40CD
The new lower bearing shell features a concave design
Summary
with a reduced wear rate.
Recommendation and information about
new design of connecting rod bearing
The influences of oil care are unchanged. It must still be shells.
ensured that the oil used and its preparation complies
with our stipulations/specifications (see operating Filing Advice
instructions). Assembly group / work card 030
As the main bearings and connecting rod bearings have
the same diameter on in-line-engines, please note that
bearings with markings -3663 and -3661 must not be
used as main bearing shells.
Recommendation
Existing stocks of the previous series can further be
used. These bearing shells should, however,
preferentially be used for main bearings in L-type
engines.
MAN Diesel & Turbo SE PrimeServ PrimeServ PrimeServ
Head office (& postal address) After Sales Augsburg After Sales Technical After Sales Commercial
Stadtbachstraße 1 Stadtbachstraße 1 Stadtbachstraße 1 Stadtbachstraße 1
86153 Augsburg 86153 Augsburg 86153 Augsburg 86153 Augsburg
Germany Germany Germany Germany
Phone: +49 (0) 821 322 0 Phone: +49 (0) 821 322 3509 Phone: +49 (0) 821 322 1499 (24-h-hotline) Phone: +49 (0) 821 322 1799 (24-h-hotline)
Fax: +49 (0) 821 322 3382 Fax: +49 (0) 821 322 1530 Fax: +49 (0) 821 322 3838 Fax: +49 (0) 821 322 3574
mandiesel-de@mandieselturbo.com primeserv-aug@mandieselturbo.com primeserv-aug-technical@mandieselturbo.com primeserv-aug-commercial@mandieselturbo.com
www.mandieselturbo.com
MAN Diesel & Turbo – a member of the MAN Group
DCI / No. 312 - January 2012
In the case of V-type engines, there is no risk of interchange as the main and connecting rod bearings
have different diameters.
The designation for the new bearing is:
• Lower connecting rod bearing shell -3663
• Upper connecting rod bearing shell -3661 (exchangeable exclusively as set)
Please note:
1.) Do not install this bearing shells before checking the crankpin for probably already developed ridge
wear.
2.) Please pay attention to the markings on the bearing shell and check correct numbers of the suitable
opposite shell before installation.
Contact
Should you have any queries, our Technical Service will be pleased to be of assistance:
MAN Diesel & Turbo SE
86224 Augsburg
Tel.: +49 (0) 821 322-1401
Fax: +49 (0) 821 322-3838
E-mail: primeserv-aug-technical@mandieselturbo.com
Robert Glauber Jörn Holst
Senior Vice President Senior Manager
After Sales After Sales Technical
Please forward this information to your technical operational personnel and
remember to inform us of the current operating hours of your MAN Diesel & Turbo engines.
Diesel Customer Information »Connecting Rod Bearing Shells« - Page 2 of 2
