Service Letters
This is a collection of service letters published by MAN Energy Solutions, Copenhagen/Holeby, Denmark, covering both MAN B&W two-stroke and MAN four-stroke combustion engines.
Our service letters provide information on new engine developments and trends, service experience, important aspects of engine management and maintenance, and emissions requirements compliance and development, etc.
Note that some service letters have documents attached (e.g. work cards, instructions, guidelines, specifications, etc.) that may subsequently have been updated after the release of the service letter. It is therefore recommended to check for the latest edition of such attachments.
Table of content
Download
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SL2023-745pdf, 432 KB
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SL2023-744pdf, 864 KBGuiding overhaul intervals
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SL2023-743pdf, 3710 KBUpdated procedure due to potential crack in piston crown
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SL2023-742pdf, 470 KBPre-inspection of turbocharger hot-parts
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SL2023-741pdf, 580 KBBiofuel operation
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SL2023-740pdf, 674 KBOverspeed
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SL2023-739 NSLpdf, 598 KBPMI sensors - Two-stroke engines
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SL2023-738pdf, 1016 KBSampling of scavenge drain oil: Adjust feed rate factor in service, and monitor piston ring and cylinder liner wear
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SL2023-737pdf, 1592 KBCyIinder lubrication update for operation on ULSFO, VLSFO, biofuel, LNG, LEG, LPG, methanol, and HSFO
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SL2023-736pdf, 590 KBMAN NOx sensors – for SCR and EGR
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SL2023-735pdf, 677 KBReconditioning of exhaust valve spindles
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SL2023-734pdf, 811 KBLocal monitoring control and safety, LMCS base module 2 replacement.
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SL2023-733pdf, 578 KBStarting air valve - Failure to close
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SL2023-732pdf, 1195 KBFees for technical assistance and advisory work.
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SL2022-731pdf, 884 KBCorrect installation of lubricating oil supply valve for the Alpha Lubricator. Non-flow cylinder oil alarm
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SL2022-730pdf, 2614 KBPrevention of crankcase explosions. The latest safety components standard
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SL2022-729pdf, 847 KBPreventive grinding of exhaust valve seats
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SL2022-728pdf, 508 KBCylinder and system oils MAN B&W low-speed two-stroke engines
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SL2022-727pdf, 772 KBRegular dp-RTV and RTV position check of SCR installations
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SL2022-726pdf, 3213 KBService experience with 2020-compliant fuels
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SL2022-725pdf, 681 KBUpdated evaluation guidelines - piston ring coating and deposit build-up on piston ring lands
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SL2022-724pdf, 873 KBInlet and exhaust valve issues when operating on low-sulphur fuels
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SL2022-723pdf, 487 KBEEXI Compliance
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SL2022-722pdf, 539 KBRunning without gas injection for prolonged periods
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SL2022-721pdf, 850 KBExcessive wear on the locking keys of crankshaft thrust bearing.
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SL2022-720pdf, 1263 KBFees for technical assistance and advisory work
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SL2021-719pdf, 687 KBCleaning of fuel injection nozzles
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SL2021-718pdf, 882 KBOverspeed incident with disintegrated flywheel ̶ Updated information
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SL2021-717pdf, 690 KBSafety during emergency repair Safety precautions
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SL2021-716pdf, 538 KBReaming of valve guide after replacement
All data provided on this site is for information purposes only, explicitly non-binding and subject to changes without further notice.
Unless otherwise stated, the copyright and any other rights in the contents of the Service Letters available through our website, including any images and text, are owned by MAN Energy Solutions.
For the avoidance of doubt, you must not adapt, edit, change, transform, publish, republish, distribute, redistribute or show in public the Service Letters (in any form or media) without the prior written consent of MAN Energy Solutions.
Permission is granted to:
1) download, display or print material for personal use or use within an individual organisation and for a non- commercial purpose;
2) create links to these pages;
3) reproduce short extracts
provided the source is stated.
Requests for further authorisation regarding proposed usage of the information provided should be addressed to:
MAN Energy Solutions
Teglholmsgade 41
2450 Copenhagen SV
or by email to jacob.bonelli@man-es.com
Requests of the S.E.M.T. Pielstick Service Bulletin should be addressed to:
MAN Energy Solutions France
Attention: Technical Assistance MAN PrimeServ
Avenue de Chatonay , Porte 7
BP 427
44615 Saint-Nazaire Cedex
France
or by email to primeserv.technical-france@man-es.com