11-1
Chapter 11 TROUBLESHOOTING
General Precautions
Contact a Dealer of Mitsubishi
Heavy Industries, Ltd. for
Repair Service
Except for relatively simple maintenance work such as
changes and refilling of fuel, engine oil and coolant,
the repair work of malfunctioning engines may require
special equipment or involves dangerous work. If your
engine has failed and needs to be repaired, contact
your local dealer.
Considerations Before Pro-
ceeding with Corrective Action
Before troubleshooting, consider possible causes of
the problem and try to find out if the same problem
has occurred in the past.
Check the parts that may be causing the problem in
the most efficient order.
When disassembling any part of the engine, pay close
attention to the disassembly sequence so that you can
effectively assemble as they were.
Cautions Against Contamina-
tion
Dust and foreign materials are the most common
cause of rapid wear of parts.
When disassembling a component, take measures to
prevent dust and foreign materials from entering the
component being disassembled.
Cautions Regarding Parts Han-
dling
Handle parts carefully.
When replacing parts, use only genuine parts by refer-
ring to the parts catalogue.
Safety Work
Be sure to use a tool suitable for the size. Using a tool
of wrong size can cause not only the damage to the
part but also the personal injury.
Use correct tools and perform work with the utmost
care.
Be sure to accurately estimate the weight of the part
being dismounted. If the removed part is much
heavier than you have estimated, it may fall down dur-
ing lifting and can result in the damage to the parts or
personal injury.
Before proceeding with engine inspection, change
switches on generator panel from auto mode to man-
ual mode and place the battery switch to the OFF
position so that the engine will not start in the event of
power failure. And also, prepare an auxiliary or tempo-
raly generator set in case of unexpected electric
power interruption, or notice the condition to the elec-
tricity user before the inspection.
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