Bomag BPH 80/65, Инструкция по эксплуатации, Инструкция по техническому обслуживанию

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Maintenance
BOMAG
31
BPH 80/65
Fig. 30
l
Open the lock on the rear hood.
l
Fold the rear hood back.
Fig. 31
l
Fold the lifting eye towards the rear hood.
l
Fold the front hood back.
4.2 Fuels and lubricants
Engine oil
Use winter grade engine oil for winter operation!
In order to assure perfect cold starting it is import
to chose the viscosity (SAE-class) of the engine oil
according to the ambient temperature.
For winter operation below -10°C the oil change in-
tervals must be shortened.
Fig. 32
Lubrication oil with a too high viscosity index caus-
es starting difficulties. The temperature when
starting the engine is therefore of highest impor-
tance when choosing the viscosity of engine oil for
winter operation.
Oil viscosity
Since lubrication oil changes its viscosity with the
temperature, the ambient temperature at the oper-
ating location of the engine is of utmost impor-
tance when choosing the viscosity class (SAE-
class) (see diagram).
Occasional falling short of the temperature limit
(e.g. use of SAE 15W/40 down to -15°C) may ef-
fect the cold starting ability of the engine, but will
not cause any engine damage.
Temperature related lubrication oil changes can
be avoided by using multi-purpose oils. The follow-