50
Technical Data
General
Engine designation .................................................. MD2010B MD2020B MD2030B MD2040B
No. of cylinders ....................................................... 2333
Cylinder bore ........................................................... 67 mm 67 mm 75 mm 84 mm
Cylinder stroke ........................................................ 64 mm 64 mm 72 mm 90 mm
Overall cylinder displacement ................................ 0.45 liter 0.68 liter 0.95 liter 1.50 liter
Power, see sales literature
Idling speed ............................................................. 850 ± 25 rpm 850 ± 25 rpm 850 ± 25 rpm 850 ± 25 rpm
Rotation, viewed from in front ................................ Clockwise Clockwise Clockwise Clockwise
Max. permitted rake backwards while running...... 20° 20° 20° 20°
Max. list while running ............................................ 30° 30° 30° 30°
Valve clearance (stopped, cold engine)
inlet and outlet...................................................... 0.20 mm 0.20 mm 0.20 mm 0.20 mm
Weight, dry engine .................................................. 98 kg 116 kg 129 kg 179 kg
Lubrication system
Oil capacity incl. oil filter, approx.:
no engine inclination............................................. 1.8 liters 3.4 liters 4.3 liters 6.4 liters
Oil grade (in accordance with API system) ............ CD CD CD CD
Viscosity at –5
o
– +50
o
C* ........................................ SAE 15W/40, SAE 15W/40, SAE 15W/40, SAE 15W/40,
SAE 20W/50 SAE 20W/50 SAE 20W/50 SAE 20W/50
Oil drain plug tightening torque .............................. 30–40 Nm 30–40 Nm 30–40 Nm 30–40 Nm
(3.0–4.0 kpm) (3.0–4.0 kpm) (3.0–4.0 kpm) (3.0–4.0 kpm)
* Steady ambient temperature
Cooling system
Thermostats, no. ..................................................... x 1 x 1 x 1 x 1
The thermostat starts opening at............................ 75
o
± 2°C 75
o
± 2°C 82
o
± 2°C 82
o
± 2°C
fully open at ....................................... 87°C 87°C 95°C 95°C
Freshwater system capacity, approx. ................... 2.1 liters 3.0 liters 4.0 liters 6.9 liters
Electrical system
System voltage........................................................ 12 V 12 V 12 V 12 V
Fuses ....................................................................... 15 A 15 A 15 A 15 A
Battery capacity (starter battery) ............................ 70 Ah 70 Ah 70 Ah 70 Ah
AC generator voltage/max. current ........................ 14 V/60 A 14 V/60 A 14 V/60 A 14 V/60 A
output approx. ................................. 840 W 840 W 840 W 840 W
Starter motor, output approx. ................................. 0.7 kW 0.7 kW 1.2 kW 2.0 kW
Fuel specification
Fuel must meet national and international standards at least. For example:
EN 590 (with national environmental and cold standards)
ASTM D 975 No 1-D and 2-D
JIS KK 2204
Sulfur content: According to statutory requirements.
Fuels with extremely low sulfur contents (“urban diesel” in Sweden and “city diesel” in Finland) can cause a drop in
output of 5% and an increase in fuel consumption of 2–3%.
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