Presentation General Design differences, engine versions The engines are in-line, 4-stroke, marine diesel engines fitted with top valves. MD2010 has two cylinders, while MD2020 , MD2030 and MD2040 have three cylinders. This Workshop Manual applies to all engines MD2010 - 2040 A, B, C The most important differences are: The engines are of the pre-chamber type and equipped with glow plugs which are activated before and during starting. MD2010-40A =* MD2010-40B The engines are fitted with thermostat regulated fresh water cooling. The cooling system is divided into a fresh water and a sea water system. The sea water cools the fresh water system via a heat exchanger. MD2010-40B has:
Unipolar electrical system The fly wheel cover and the transmission (reverse gear or S-drive) are electrically insulated from the engine Lubricating takes place by means of an oil pressure system where an oil pump presses oil to all the lubrica- tion point. The oil system is provided with a replaceable oil filter of the full-flow type. The fuel system is protected from impurities by a re- placeable fine filter. MD2010-40B = MD2010-40C MD2010-40C has:
Heat exchangers with improved cooling performan- ce and extended expansion volume Deeper and narrower oil sump Reinforced generator mountings for 2010 and 2020 Common oil filter for 2010-40 Positioning of rating plates VOLVO a,usan asseraBLY PENTA Tx XXXX ( 1) XXXXXXXXXX(2) XXX XXX (3) C. nvvxoR ' nl n TO; XXXXXXX ' XXX ' ( 4) m. ~ .. 0 VOLVO XXXX (1) XXX XXX (3) PEP7TA XXXXXXXXXX (2) vxUYeo ~x nCCOXnnxR' i0 x . Engine and transmission decal XXXX (5) XXXXXXXXXX(6) XXX XXX (7) Engine plate 2. Serial number 6. Serial number 1. Product designation 5. Product designation 3. Product number 7. Product number 4. Certification number 8. Gear ratio 1 9