Technical data

6
Repair instructions
The work methods described in the Workshop Manual
are applicable for a workshop environment. The engine
is therefore removed from the boat and mounted in an
engine block. Renovation work which does not require
removal of the engine is conducted in situ with the
same work methods, unless otherwise stated.
The warning symbols used in the Workshop Manual
(see Information on Safety for implication)
WARNING!
IMPORTANT!
NOTE!
These are in no way comprehensive, since we
obviously cannot foresee everything, in that service
work is conducted under the most various conditions.
We can therefore only point out the risks which we
consider can arise as a result of incorrect handling
during work in a well-equipped workshop with work
methods and tools which are proven by us.
In the Workshop Manual all the work procedures for
which there are special Volvo Penta tools are
conducted with these. The special tools are specially
produced to facilitate the most safe and rational work
method possible. It is therefore the responsibility of
persons using other tools or another work method than
that which we recommend to ensure that no risk of
personal injury, material damage or malfunction can
occur.
In some cases there may be special safety
instructions and user instructions for the tools and
chemicals named in the Workshop Manual. These
instructions shall always be followed and there are no
special instructions for this in the Workshop Manual.
By means of taking certain elementary procedures
and using a modicum of common sense, most risk
factors can be prevented. A clean workplace and a
clean engine eliminate many risks both of personal
injury and malfunction.
Especially during work on the fuel system, lubrication
system, induction system, turbo, bearing unions and
sealing unions, it is of the greatest importance that dirt
or foreign particles do not get in, since this can result
in malfunctioning or shorten the repair service-life.
Our joint responsibility
Each engine consists of a large number of interactive
systems and components. The deviation of a
component from the technical specification can
dramatically increase the environmental impact from
an otherwise first-rate engine. It is therefore of
extreme importance to maintain the given wear
tolerances, that systems capable of adjustment
receive the correct setting, and that Volvo Penta
Genuine Parts are used for the engine. The time
intervals in the engine’s maintenance schedule must
be followed.
Certain systems, e.g. components in the fuel system,
may require special competence and special test
equipment. Certain components are sealed at the
factory for environmental reasons. Work on sealed
components must not be conducted unless authoris-
ation for such work is held.
Remember that most chemical products, incorrectly
used, are hazardous to the environment. Volvo Penta
recommends the use of biologically decomposing
degreasing agents for all cleaning of engine
components, unless otherwise stated in the Workshop
Manual. When working on board a boat pay special
attention to make sure that oils and washing residue
are handled correctly for destruction, and do not
unintentionally end up in the nature, e.g. in the bilge-
water.
Tightening torques
Tightening torque for vital unions, which should be
tightened with dynamometric wrenches, is listed in
“Specifications: Tightening torque” and indicated in the
manual’s work descriptions. All torque indications are
applicable for cleaned threads, screw heads and
mating surfaces. The torque indications refer to lightly
oiled or dry threads. If lubricants, locking liquids or
sealants are required for the screw union, the type is
indicated in the work description and in “Tightening
torques”. General tightening torque as per the table
below is applicable for unions where special torque
indications are not given. The torque indication is a
standard value and the union does not require
tightening with a dynamometric wrench.
Size Tightening torques
Nm lbf.ft
M5 ................................................. 6 4.4
M6 ................................................. 10 7.4
M8 ................................................. 25 18.4
M10 ............................................... 50 36.9
M12 ............................................... 80 59.0
M14 ............................................... 140 103.3