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Services,Wrtsil Finland OyEngine section Engine type Ref. Date Issue Document No. Page

01 Operating data See below WFIS 08-Jan-2013 01 3201Q214 1(2)

Wrtsil Finland Oy P.O. Box 252 (Tarhaajantie 2) Telecop. +358 10 709 1847 Tel. +358 10 709 0000 Business ID 0773744-3Services, Vaasa FIN-65101 Vaasa, Finland Telecop. +358 10 709 1380 Registered Office: Vaasa

Wrtsil Finland Oy P.O. Box 50 (Stlarminkatu 45) Telecop. +358 10 709 3279 Tel. +358 10 709 0000Services, Turku FIN-20811 Turku, Finland Telecop. +358 10 709 3410

OPERATING

INSTRUCTION

Peak pressures

Engine type This bulletin concerns WRTSILVasa 32, 32GD, 32LN and 32LNGDengines.

General The level of mechanical stress put on the engine components is directlyrelated to the peak pressure (firing pressure) of the engine.

Note! Too high peak pressure will increase the risk of engine failure and humaninjury.

Factors with an influence on peak pressures are e.g.

Injection timing

Compression ratio

Charge air pressure

Ambient temperature

Fuel quality

The table below shows the maximum allowed continuous peak pressuredepending on which type of connecting rod the engine is fitted with.

Note! Engines with lower rating have lower maximum allowed peak pressuresthan listed below.

Maximum allowed continuous peak pressure

Type of Connecting Rod (bar)

O-profile 145

H-profile 155

Three-piece 165

See also bulletins,

3201N023, Injection timing and max. combustion pressures

WV01Q099, Measuring firing pressures

Recommendation Contact Wrtsil for more information if the maximum allowed peakpressure has been exceeded for longer periods.

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Services,Wrtsil Finland Oy Operating InstructionIssue Document No. Page01 3201Q214 2(2)

2013 Wrtsil Finland OyAll rights reserved

No part of this publication may be reproduced or copied in any form or by any means (electronic, mechanical, graphic, photocopying,recording, taping or other information retrieval systems) without the prior written permission of the copyright holder. Wrtsil Finland Oy

makes no representation, warranty (express or implied) in this publication and assumes no responsibility for the correctness, errors oromissions for information contained herein. Information in this publication is subject to change without notice.

Unless otherwise expressly set forth, no recommendation contained in this document is to be construed as provided due to adefect in the engine, but merely as an improvement of the engine and/or the maintenance procedures relating thereto. Any actionsby the owner/operator as a result of the recommendations are not covered under any warranty provided by Wrtsil and suchactions will thus be at the owners/operators own cost and expense.

NO LIABILITY WHETHER DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL, IS ASSUMED WITH RESPECT TO THEINFORMATION CONTAINED HEREIN. THIS PUBLICATION IS CONFIDENTIAL AND INTENDED FOR INFORMATION PURPOSESONLY.

Letter distribution Wrtsil Services Network and operators/owners of engines concerned.

Letter validity Until further notice.