Volvo MD2010 - Technical Data (Continued); Injector; Cooling System; Electrical System

Note: refers to engine with timing gears and at approx. +20°C (+68°F).
1 4
Electrical system
M D2010 MD2020 MD2030 MD2040
System voltage
 12V 12V 12V
12V
Fuses 
15A 15A 15A
15A
Battery capacity (starter battery)  70 Ah
70 Ah 70 Ah 70 Ah
Glow plug:
rated voltage 
10.5V 10.5V 10.5V
10.5V
current  6.9 A
6.9 A 6.9 A 6.9 A
Alternator
M D2010 MD2020 MD2030
MD2040
Output voltage at +20°C (+68°F)  14.2 ±0.15 V
14.2 ±0.15 V 14.2 ±0.15 V 14.2 ±0.15 V
Max. current 
60 A
60 A 60 A 60 A
Power approx 
840 W 840 W
840 W 840 W
Suppressor capacitor 
2.2 µF 2.2 hF 2.2 hF
2.2 µF
Voltage regulator type  YV 77
YV 77 YV 77 YV 77
Starter motor
M D2010
MD2020 MD2030
MD2040
Starter motor, power approx
 0.7 kW 0.7 kW
1.2 kW 2.0 kW
Engine speed* with connected starter motor,
approx 
340 rpm 300 rpm
285 rpm 265 rpm
Technical data
I njector MD2010 MD2020
MD2030 MD2040
Opening pressure (checking)  11.3-12.3 MPa 11.3-12.3 MPa 11.3-12.3 MPa 15.2-16.2 MPa
115-125 kp/cm
2
115-125 kp/cm
2
115-125 kp/cm
2
155-165 kp/cm
2
1639-1784 lbf/in
2
1639-1784 lbf/in
2
1639-1784 lbf/in
2
2205-2347 lbf/in
2
Opening pressure (adjustment)  11.8 MPa 11.8 MPa 11.8 MPa
15.7 MPa
120 kp/cm
2
120 kp/cm
2
120 kp/cm
2
160 kp/cm
2
Needle valve, diameter 
1711 lbf/int
3.5 mm
1711 lbf/int
3.5 mm
1711 lbf/int
6mm
2276 lbf/int
4mm
(0.1378 in)
(0.1378 in) (0.2362 in) (0.1575 in)
Journal diameter  1 mm
(0.0394 in)
1 mm
(0.0394 in)
1
mm
(0.0394 in)
1 mm
(0.0394 in)
Jet angle  4°
4° 4°
40
Cooling system
MD2010
MD2020 MD2030 MD2040
Type

Overpressure, closed cooling system
Fresh water system volume, approx (vers. A/B). 2.1 litres 3.0 litres 4.0 litres
6.9 litres
Fresh water system volume, approx (vers. C) ....
2.2 US quarts
2.3 litres
3.2 US quarts
2.9 litres
4.2 US quarts
4.5 litres
7.3 US quarts
6.7 litres
Thermostat, number 
Thermostat begins to open at 
2.4 US quarts
1 st
75
0
±2°C
3.1 US quarts
1st
75° ±2°C
4.8 US quarts
1st
82° ±2°C
7.1 US quarts
1 st
82° ±2°C
(167° ±4°F)
(167° ±4°F) (179° ±4°F) (179° ±4°F)
fully open at  87°C (189°F) 87°C (189°F)
95°C (203°F) 95°C (203°F)
Thermostat valve's lifting height  6 mm 6mm
8 mm 8 mm
(0.2362 in) (0.2362 in) (0.3150 in)
(0.3150 in)