Volvo Penta AQD70C, Инструкция, Страница: 21 / 52

19
Engine lubricating oil
The engine requires high-class diesel engine oil in order to
maintain good running economy and maximum performan-
ce. It is an absolute requirement that the correct quality of
lubricating oil is used according to our recommendations.
Note that our warranty does not apply if the engine is run
with the wrong lubricating oil.
We recommend that you use Volvo Penta diesel engine
lubricating oil which is on sale at our service stations.
Quality and viscosity
The lubricating oil should meet the requirements according
to one of the following standards:
Designation Standard
CD (For service DS) API (American Petroleum Institute)
MIL-L-2104C US Government’s Military
(L-45199B) Specification
Series 3 Caterpillar Tractor Co. Specification.
When buying lubricating oil, always make sure that the oil
container is marked with the oil designation in question,
and check with each oil company that they guarantee that
the oil they sell satisfies the demands made in the classifi-
cation standards mentioned above.
The viscosity used will depend on the ambient air tempe-
rature. See page 21.
Reverse gear lubricating oil and
hydraulic oil
For the reverse gear and hydraulic equipment the same
lubricating oil is used as for the engine. Concerning disen-
gageable clutches with reduction gear, see ”Technical
data”.
Fuel
The diesel fuel oil used in the engine must satisfy certain
quality demands and must primarily be free from solid im-
purities and water. The sulphur content should also be as
low as possible.
If low quality fuel is used, this can give rise to abnormal
wear, running interruptions and smokey exhaust emis-
sions.
Diesel fuel oil must satisfy the demands according to the
standard SIS 155432 or Volvo Group Standards (Diesel
fuel oil 97963-02).
A few of the points in the Volvo Standard concerned are gi-
ven below:
Cetane rating min 45
Viscosity at 20°C (68°F) 2.0–6cSt
Lowest pour temperature
summer grade
–10°C (+14°F)
winter grade –25°C (–13°F)
Flash point 40°C min (104°F)
Solid impurities None
Sulphur content Max. 0.5 % by weight
The fuel oil property requirements stated above are also
covered, to a large extent, by the following standards.
DIN 51601, CEC-ERF-D1 or ASTM-D975-No. 2-D
Fuel oils complying with these standards can, therefore,
also be used.
Electrical system
As standard, the engines are equipped with a two-pole
electrical system and an alternator. See pages 42-47 for
the wiring diagrams. Engine TAMD60 has a voltage of 12 V
(alt. 24 V) whereas the 70-series engines have a voltage of
24 V (alt. 12 V) as standard.
1. Never break the circuit between the alternator and
batteries while the engine is running. The master
switch must not be switched off until the engine has
stopped completely. No cable may be disconnected
while the engine is running as this too can damage the
charging regulator.
2. The batteries, battery cables and cable terminals
should be checked regularly. The battery poles should
be well cleaned and the cable terminals firmly tighte-
ned and greased so that no interruption occurs. All
cables should be well tightened. No loose connections
are permitted. Note! When fitting the battery be
absolutely sure not to confuse the plus and the minus
poles. See the appropriate wiring diagram.
3. When starting with the help of a spare battery, first
check that the spare battery has the same rated
voltage as the standard one. Connect the spare battery
to the standard battery, plus to plus and minus to mi-
nus. Remove the spare battery when the engine has
started. Note! The circuit to the standard battery must
not be broken.
4. If electrical welding work is to be carried out on the
engine or installation units, disconnect the charging re-
gulator and insulate the leads. Also, disconnect both
the battery terminals. Never connect the welding
cables so that current passes through a bearing.
5. Should repair work need to be carried out on the
alternator equipment, the battery leads should be
disconnected first. This also applies if the batteries are
to be rapid-charged.
6. Never test with a screwdriver, etc against any terminal
to see if it is live.