Volvo MD2010 - Connecting Rods; Timing Gears; Valve System

Technical data
Big-end bearing shells
Connecting rods
Valve system
Valves
1 2
MD2010 , MD2020
M D2030 M D2040
Inlet
Spindle diameter in mm 
5.960-5.975
6.94-6.95 6.955-6.970
(.2346-.2352 i n) (.2732-.2736 i n)
(.2738-.2744 i n)
Valve disc edge in mm 
0.925-1.075 0.925-1.075 0.925-1.075
(.0364-.0423 i n)
(.0364-.0423 i n) (.0364-.0423 i n)
Clearance in mm, valve spindle guide
 0.045-0.072 0.050-0.075
0.03-0.06
(.0017-.0028) (.0019-.0029 i n)
(.0011-.0023 i n)
Seat angle in cylinder head 
45
0
45
0
45
0
Valve clearance in mm, cold engine
 0.20
0.20 0.20
(.0078 i n) (.0078 i n)
(.0078 i n)
Outlet
Spindle diameter in mm 
5.940-5.955 6.94-6.95
6.94-6.95
(.2338-.2344 i n)
(.2732-.2736 i n) (.2732-.2736 i n)
Valve disc edge in mm 
0.925-1.075
0.925-1.075 0.925-1.075
(.0364-.0423 i n) (.0364-.0423 i n)
(.0364-.0423 i n)
Clearance in mm, valve spindle guide
 0.045-0.072
0.050-0.075 0.050-0.075
(.0017-.0028 i n)
(.0019-.0029 i n) (.0019-.0029 i n)
Seat angle in cylinder head 
45° 450
45°
Valve clearance in mm, cold engine
 0.20
0.20 0.20
(.0078 i n)
(0078 i n) (.0078 i n)
MD2010 , MD2020
M D2030 M D2040
Fitted with replaceable bearing shells.
Diameter, gudgeon bushing's bearing position  21.000-21.021
23.000-23.021 30.500-30.516
(.8267-.8275 i n) (.9055-.9063 i n)
(1.2007-1.2014 i n)
Bearing shell's bearing position 
19.015-19.026 21.010-21.021
28.010-28.021
(.7486-.7490 i n) (.0827-.8275 i n) (1.1027-1.1031 i n)
Gudgeon bushing 
19.015-19.026 21.010-21.021 28.010-28.021
(.7486-.7490 i n)
(.8271-.8275 i n) (1.1027-1.1031 i n)
Axial clearance, connecting rod -crankshaft  0.031-0.079
0.035-0.083 0.035-0.083
(.0012-.0031 i n) (.0013-.0032 i n)
(.0013-.0032 i n)
MD2010 , MD2020 MD2030 ,
MD2040
Thickness in mm, standard 
1.484-1.497 1.482-1.495
(.0584-.0589 i n)
(.0583-.0588 i n)
oversize 0.25 mm  1.609-1.622
1.607-1.620
(.0098 i
n)
(.0633-.0638 i n)
(.0632-.0637 i n)
0.50 mm ............................ 1.734-1.747
1.732-1.745
(.0196 i n) (.0682-.0687 i
n) (.0681-.0687 i n)
Timing gears
Camshaft
M D2010 M D2020
MD2030 MD2040
Drive 
Number of bearings 
Gear wheel
3
Gear wheel
3
Gear wheel
3
Gear wheel
3
Valve times:
i nlet valves open B.T.D.C 
13
0
13
0
13
0
16°
close A.B.D.C 
430
43
0
430 40°
outlet valves open B.B.D.C 
430 43
0
430
46°
close A.T.D.C 
130 13
0
130
10
0