Maintenance
BOMAG 37BPR 45/55 D, BPR 55/65 D
other and determine power, temperature level and
exhaust gas quality of the engine.
If your engine has to work permanently in "thin air"
(at higher altitudes) and under full load, you should
consult our customer service or the customer serv-
ice of the engine manufacturer.
Frequent causes of faults
l Operating errors
l Incorrect, inadequate maintenance
If you cannot locate the cause of a fault or rectify it
yourself by following the trouble shooting chart,
you should contact our customer service depart-
ment.
6.2 Fuels and lubricants
Engine oil
Oil viscosity
Fig. 39
Choose the oil viscosity in dependence on the am-
bient temperature at the operating location of the
engine (see diagram).
Occasional falling short of the temperature limit
(e.g. use of SAE 15W/40 down to -15 °C (+5 °F))
may effect 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-
ing oil change intervals apply also when using mul-
ti-purpose oils.
Oil quality
Use oils of the following quality classes:
l API: CF-4/CG-4
l ACEA: B2/E2
l MIL-L46152 D/E
Lubrication oil change intervals
Annually or every 250 operating hours
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