FOREWORD
This manual is designed to serve as an instruction for the Operation & Maintenance of the generating-
set engines of Doosan POLUS series and the power unit engines: P086TI /P086TI-1/ D1146T/ D1146/
PU086T/ PU086. The POLUS means ‘Power Plus’ that is represented more powerful Doosan
generating-set engines and it is marked on engine name as an initial P. On the other hand, initial PU
stands for ‘Power Unit’ and Initial D stands for standard engine prior to POLUS version.
The first half is for operation and the latter half is for maintenance like disassembling, inspecting and
re-assembling etc in order to help an understanding for the maintenance procedure more easily.
To keep the best performance and the durability of engine for a long time, CORRECT OPERATION
and PROPER MAINTENANCE are essential.
In this manual, the following symbols are used to indicate the type of service operations to be
performed.
Removal Adjustment
Installation Cleaning
Disassembly Pay close attention-Important
Reassembly Tighten to specified torque
Align the marks Use special tools of manufacturer
Directional Indication Lubricate oil
Inspection Lubricate grease
Measurement
If you have any question or recommendation in connection with this manual, please do not hesitate
to contact our head office, dealers or authorized service shops near by your location for any services.
Also some figures in this manual may be different from the actual appearance of the engine because
of explaining them with the representative figure among these models.
For the last, the contents of this instruction manual may be changed without prior notice for some
quality improvement. Thank you.
Jan. 2004
DOOSAN Infracore Co., Ltd.
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