Technical data Valve springs MD2010 MD2020 MD2030 MD2040 Length in mm (in) uncompressed 33(l.299) 33(l.299) 35(l.377) 35(l.377) with 79.4 N (58.56 ft.lbf) compression - 30.4 (1.196) 30.4 (1.196) with 67.7 N (49.93 ft.lbf) compression 28.3 (1.114) 28.3 (1.114) - Push rods Length in mm (in), total 146 146 157 195.8-196.2 (5.748) (5.748) (6.181) (7.709-7.724) Outer diameter in mm (in) 6.3 6.3 6.3 6.2-6.4 (.2480) (.2480) (.2480) (.2441-0.2520) Rocker mechanism Rocker shaft, diameter in mm 11.65-11.67 11.65-11.67 11.65-11.67 11.65-11.67 (.4586-.4594 in) (.4586-.4594 in) (.4586-.4594 in) (.4586-.4594 in) Clearance in mm, rocker shaft - bushing 0.032-0.068 0.032-0.068 0.032-0.068 0.032-0.068 (.0012-.0026 in) (.0012-.0026 in) (.0012-.0026 in) (.0012-.0026 in) Lubrication system MD2010 MD2020 MD2030 MD2040 Oil pressure in kPa, hot engine at running speed 150-500 150-500 150-500 150-500 (21.7-73 lbf/in t) (21.7-73 lbf/in z) (21.7-73 lbf/in z) (21.7-73 lbf/int) Oil pressure in kPa, idling 50-150 50-150 50-150 50-150 (7.25-22 lbf/in z) (7.25-22 lbf/in z) (7.25-22 lbf/in z) (7.25-22lbf/in z) Relief valve, opening pressure in kPa 294-490 294-490 294-490 245-345 (42.6-71 lbf/in') (42.6-71 lbf/in t ) (42.6-71 lbf/in z) (34.4-50 lbf/in z) Oil pump:
Clearance, inner - outer impeller 0.01-0.15 mm 0.01-0.15 mm 0.01-0.15 mm 0.01-0.15 mm (.0004-.0059 in) (.0004-.0059 in) (.0004-.0059 in) (.0004-.0059 in) Axial clearance, impeller - cover 0.01-0.15 mm 0.01-0.15 mm 0.01-0.15 mm 0.01-0.15 mm (.0004-.0059 in) (.0004-.0059 in) (.0004-.0059 in) (.0004-.0059 in) Oil quality as per API system Viscosity at -5 to +50°C* (+23 to +122°F)* CD SAE 15W/40. CD SAE 15W/40. CD SAE 15W/40. CD SAE 15W/40. SAE 20W/50 SAE 20W/50 SAE 20W/50 SAE 20W/50 Max. Oil volume incl. oil filter:
no engine tilt (version A/B) 1.8 litres (1.9 US quarts) 1.9-litres (2.0 US quarts) 3.4 litres (3.6 US quarts) 2.8 litres (3.0 US quarts) 4.3 litres (4.5 US quarts) 3.5 litres (3.7 US quarts) 6.4 litres (6.7 US quarts) 5.7 litres (6.0 US quarts) no engine tilt (version C) Min. Oil volume incl. oil filter: no engine tilt (version A/B) 1.5 litres 3.0 litres 3.2 litres 5.5 litres no engine tilt (version C) (1.6 US quarts) 1.3 litres (3.2 US quarts) 2.1 litres (3.4 US quarts) 2.7 litres (5.8 US quarts) 4.5 litres (1.7 US quarts) (2.2 US quarts) (2.9 US quarts) (4.8 US quarts) * Note: Temperatures with stable ambient temperature.
Fuelsystem MD2010 MD2020 MD2030 MD2040 I njection sequence 1-2 1-2-3 1-2-3 1-2-3 Feed pump max. induction height in m (ft) 0.8 (2.62) 0.8 (2.62) 0.8 (2.62) 0.8 (2.62) Feed pressure in kPa (lbf/inz) 15-25 (2.1-3.6) 15-25 (2.1-3.6) 15-25 (2.1-3.6) 15-25 (2.1-3.6) I njection pump M D2010 M D2020 MD2030 MD2040 Start of injection, crankshaft position 25.5° ±1° 25.5° +1° 22.51±10 21.0° ±10 ........................................................................ B.T.D.C B.T.D.C' 27.7° ± 1 ° B.T.D. C 3 21.5°±1° B.T.D.C 5 19.0°±1° Pump element, diameter in mm (in) 4.5 (.1771) B.T.D. C 2 5.5 (.2165) stroke length in mm (in) 6(.2362) 6(.2362) 6(.2362) 7(.2755) 4.5 (.1771) B.T.D.C 4 5.5 (.2165) B.T.D.
C 6,7 ' up to and including engine number 5101311299 4 from engine number 510101939 7 MD2040C 2 from engine number 5101311300 3 up to and including engine number 510101938 5 MD2040A/B product number 868748 6 MD2040B product number 868778 13