Volvo D1-13 B, Руководство по ремонту

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Repair instructions Group 30: Electrical system
6
Repair instructions
WARNING!
IMPORTANT!
NOTE!
The warning signs which occur in the workshop manu-
al (please refer to “Safety information” for their mean-
ings)
are not comprehensive in any way, since we can not of
course foresee everything, because service work is
done in highly varying circumstances. For this reason,
all we can do is to point out the risks which we believe
could occur due to incorrect work in a well-equipped
workshop, using work methods and tools tested by us.
All operations described in the Workshop Manual for
which there are Volvo Penta Special Tools available
assume that these tools are used when carrying out
the repair. Volvo Penta Special Tools have been de-
veloped to ensure the most safe and rational working
methods possible. It is therefore the responsibility of
anyone using other tools or other working methods
than we recommend to determine that there is no risk
of personal injury or mechanical damage or malfunc-
tion as a result.
In some cases special safety precautions and user in-
structions may be required in order to use the tools
and chemicals mentioned in the Workshop Manual.
These rules must always be observed, so there are no
special instructions about this in the workshop manual.
By following these basic recommendations and using-
using common sense it is possible to avoid most of
the risks involved in the work. A clean work place and
a clean engine will eliminate many risks of personal
injury and engine malfunction.
Above all, when work on fuel systems, lubrication
systems, induction systems, bearing caps and seals
is done, it is extremely important that no dirt or other
kinds of foreign particles are able to get in, since this
would otherwise cause malfunctions or shortened re-
pair life.
Our common responsibility
Each engine consists of a large number of collaborat-
ing systems and components. Any deviation of a
component from its technical specification can dra-
matically increase the environmental impact of an
otherwise good engine. For this reason, it is important
that the specified wear tolerances are observed, that
systems which are adjustable are correctly adjusted
and that Volvo Penta Original Spares are used for the
engine. The stated service intervals in the Mainte-
nance Schedule must be observed.
Some systems, such as the components in the fuel
system, require special expertise and special testing
equipment for service and maintenance. For environ-
mental reasons etc., some components are sealed at
the factory. It is only permissible to work on sealed
components if you are authorized to do such work.
Remember that most chemical products, incorrectly
used, damage the environment. Volvo Penta recom-
mends the use of biodegradable degreasers whenever
engine components are de-greased, unless otherwise
specified in the workshop manual. When working on-
board a boat, be careful to ensure that oils, wash resi-
due etc. are processed for destruction, and are not inad-
vertently discharged with bilge water into the environ-
ment.
Torque
The tightening torque for vital fasteners, which should
be tightened with a torque wrench, are listed in “Tech-
nical Data: Special tightening torques” and noted in
the job descriptions in the book. All torque specifica-
tions apply to clean screws, screw heads and mating
faces. Torque data stated apply to lightly oiled or dry
threads. If lubricants, locking fluids or sealants are
needed on a fastener, the type of preparation to be
used will be noted in the job description. For fasten-
ers where specific torque values are not given,
please refer to “Technical data: General tightening
torques”. General torque specifications are target val-
ues and the fastener does not need to be tightened
with a torque wrench.
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