OPERATING MANUAL FOR BUKH DV48RME LIFEBOAT ENGINES
009W4226-R09
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Fuel lift pump
The fuel lift pump is a cam shaft driven sealed type diaphragm pump, which cannot be
dismantled for repair or cleaning. It is recommended to install a water/dirt accumulating
filter in the suction line to the pump.
After repairs the fuel system must be bled as described under ”Preparation for the first
start” if necessary.
Lubricating Oil System
The engine is pressure lubricated and the oil system has a built-in relief valve for
controlling the oil pressure. A lubricating oil cooler is also fitted.
The oil level is checked as mentioned before.
Change of Oil
Lubricating oil should be changed for the first time after 25 hours of running,
later for every 150 hours or at least once a year. It is recommended to chan-
ge the oil when engine is warm, and the procedure is as follows:
1. Turn the left cock below oil bilge pump 90°.
2. Pump up the oil from the sump by means of the bilge pump.
3. When the sump is empty pour fresh oil.
4. Check oil level on dipstick.
Recommended Lubricating Oil
Modern diesel engines demand heavy-duty oils with additives securing best
operation conditions and longest life time of the engine under various conditions.
Therefore use a first class HD-oil from a recognized oil company.
Oil specifications as mentioned in ”LUBRICATION OIL CHART”.
When operating under difficult conditions, i.e. frequent cold starting,
short operation periods, greatly varying loads, use quality ”Service
CD” and also use quality "Service CD" in case the sulphur content of
fuel is higher than 1 %.
Change of Lubricating Oil Filter
Lubricating oil filter cannot be cleaned, but should be changed every
150 hours or once a year. To change the filter proceed as follows :
1. Unscrew filter A and discard it.
2. Clean the sealing surface of the engine B, and remove old
gasket C if any from old filter
3. Mount new filter at once under clean conditions.
4. Screw on filter until gasket fits tightly, tighten a further half turn.
5. Fill with oil until normal level is reached.
6. Start the engine and check that the filter is tight.
Cooling system (Keel cooling)
A pump circulates the freshwater in a closed system.This circulation pump is fitted on the rear end of the engine.
The freshwater circulates through the cooling jackets of the engine and through the keel cooler, fitted on the bottom of the boat.
Too high cooling temperature will cause the blue lamp in the control panel to light up and the acoustic alarm to function.
1. Cirkulating
pump
2. Expansion
tank
3. Thermostat
75
o
C
4. Pressure
cap
5. Keel cooling pipe 2 x ø22/ø19 copper pipe
6. Oil
cooler
