Man D 2842 LE 620, Repair Manual

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Troubleshooting table
12
Faults and possible causes
We recommend
Repair work is to be considered complete only after the damage which has occurred and the possible
causes have been eliminated. Ascertaining the causes of damage is frequently more difficult than eliminat-
ing the damage caused. For this reason we recommend you have the operational fault exactly described to
you before removal or disassembly work is commenced. Then, track down the probable causes by asking
specific questions, examining and eliminating these causes one by one with the aid of the table
and your
own experience. This helps to reduce repairs to those necessary and counter complaints about “prema-
ture” exchange of parts and expensive working and downtimes.
Remark:
The subsequent list is meant to be a memory aid so that no causes of damage will be overlooked in the
elimination of faults. The precondition for this, however, is that you are familiar with the Repair Manual for
the engine and the relevant Operator’s Manual as well as the publication “Fuels, Lubricants, Coolants for
MAN Diesel Engines”.