Volvo Penta Workshop Manual
Engine
MD2010, MD2020, MD2030, MD2040


Workshop Manual
Marine engines
MD201OA/B/C MD202OA/B/C MD203OA/B/C MD204OA/B/C


Note!
The data given in this Workshop Manual refers in general to
engines in both A, B and C versions unless otherwise stated.
1
Contents
Technical data Repair instructions
9

Injection pump Injection pump 54
Wear tolerances 15
Adjustment of injection angle 55
Tightening torque 17
Adjustment of speed 57
Feed pump 58
Special tools 18
Fuel filter 59
Bleeding of fuel system 59
Injector 60
Presentation Checking of injector 61
Description of engine 19
Engine body
Cooling system
Description 62
Description 24
Repair instructions
Repair instructions: Refrigerants 63
Cylinder head 25
Checking of refrigerant level 64
Valves. valve mechanism ......................................... 28
Cleaning 65
Cylinder block, pistons. connecting rods 34
Circulation pump 66
Timing gears 40
Sea water pump 66
Camshaft 44
Replacing the thermostat 67
Crank mechanism 46
Checking the thermostat 67
Lubricating system
Description
Electrical system
51
Description 68
Repair instructions Important info 70
Oil pump 52
Starting with auxiliary battery 71
Replacing the oil filter 52
Troubleshooting, glow plug, charging system 72
Cleaning the oil channels ......................................... 52
Alternator 74
Starter motor 76
Electrical components 78
Fuel system Wiring diagram 80
Description 53
Extra equipment 87