MAN B&W

High-quality pressure measurements and a long sensor lifetime can be achieved with the proper precautionary measures and actions recommended by MAN Diesel & Turbo.

Cylinder liner cold corrosion is counteracted by raising the temperature of the exposed parts of the cylinder liner within permissible limits by making modifications to the cylinder liner design and by making changes of the cooling water system.
The latter is done by introducing the new Load Dependent Cylinder Liner (LDCL) cooling water system.

MAN Diesel & Turbo has received reports of incidents of the roller guide housing in service. Such incidents often lead to consequential damage to the frame surface on which the housing is fixed.

This service letter applies to MAN B&W two-stroke marine diesel engines of the MC/MC-C type.
Furthermore, the aim of the service letter is to address the service issues that have come to our attention, as well as to introduce service kits for the Alpha lubrication system.

With SL2016-627 we introduced a 10 mm washer and longer installation bolts for the roller guide housing as a preventive measure to reduce the risk of incidents caused by insuffi cient tightening of the installation bolts. A few roller guide housing incidents have been reported even after introduction of the above-mentioned washer and bolt update.

The amount of condensate water during operation may be considerable, and must be given special attention when operating in areas with
high humidity as well as under tropical conditions. For estimation of the condensate amount in relation to the actual operation condition, we
refer to our attached descriptions 502.05 and 602.05.

We refer to our service letter SL2006-469 concerning accumulators.
The information in this letter and in the instructions attached replaces the information given in our service letter SL06-469/JOF.
To prevent undesirable pressure peaks in the hydraulic oil system, we emphasise the importance of checking the nitrogen pressure regularly, which according to the instruction manual means every 2,000 hours or every 6 months, whichever occurs first.

Service experience has proven that the intermediate inspection of the torsional vibration damper on the crankshaft of our mentioned GenSets can be omitted without compromising a reliable engine operation.
This applies to both for new engines and to engines in service.

This paper describes in detail the service experience Very close to 100% of these engines are of the electronically controlled ME-C and ME-B types.

MAN Diesel & Turbo introduces a new overhaul programme for multiway valves in continuation of our hydraulic pump overhaul programme.
With the increasing number of ME, ME-B and ME-C engines in service, there is a need for customer-friendly and tailor-made solutions suited for all ME engines.

This service letter informs MAN B&W engine owners and operators of PrimeServ’s prices on service rendered from Denmark and from our service centres around the world.
The fees are valid from March 2017 for assistance rendered by personnel based in Denmark.

This service letter provides recommendations on a detailed overhaul strategy, monitoring and update of the ME specific components of MAN B&W two-stroke engines (ME/ME-C and ME-B) based on approximately 10 years of service experience

In 2006 a new design of hydraulic hoses with protective tubing was introduced to minimize the risk of personal injury in the event of a rupture.
During service attendance we still see many ships using the old type of hydraulic hoses without the protective tubing. As our service personnel have reported near miss incidents with ruptured hydraulic hoses, it is of almost importance that this risk is eliminated.

This Service Letter specifies the recommended maximum acceptable level of cat fines entering the engine, which is as follows:
ƒAlways keep the level as low as possible and, max. at 15 ppm
Al + Si at engine inlet for short periods.
Some guidelines on optimal operation are also given:

We refer to our Product Safety Warning Letter SL2016-614/PRP of May 2016, where we informed you about incidents reported with TSP accumulators which have suffered from breakage.

Based on the latest service experience and engine development we are pleased to issue a revised version of the Guiding Overhaul Intervals tables. The guiding overhaul intervals apply to electronically controlled ME type engines, dual fuel ME-GI type engines, and mechanically controlled MC types engines.

This service letter provides recommendations on a detailed overhaul strategy, monitoring and update of the ME specific components of MAN B&W two-stroke engines (ME/ME-C and ME-B) based on approximately 10 years of service experience.

Following an engine fire due to removed splash guards, we herewith want to draw your attention to the importance of a correct installation of splash guard facilities.