Main bearing journals
Diameter, standard
0.300 mm undersize
0.600 mm undersize
49.984—50.000 mm (1.9679—1.9685”)
49.684—49.700 mm (1.9560—1.9567”)
49.384—49.400 mm (1.9442—1.9449”)
Main bearing shells
Thickness, standard
0.300 mm oversize
0.600 mm oversize
1.730—1.737 mm (0.0681—0.0684”)
2.030—2.037 mm (0.0800—0.0802”)
2.330—2.337 mm (0.0917—0.0920”)
Connecting rod journals
Diameter, standard
0.300 mm undersize
0.600 mm undersize
49.984—50.000 mm (1.9679—1.9685”)
49.684—49.700 mm (1.9560—1.9567”)
49.384—49.400 mm (1.9442—1.9449”)
Connecting rod shells
Thickness, standard
0.300 mm oversize
0.600 mm oversize
1.730—1.737 mm (0.0681—0.0684”)
2.030—2.037 mm (0.0800—0.0802”)
2.330—2.337 mm (0.0917—0.0920”)
Connecting rods
End play at crankshaft
0.25—0.50 mm (0.0100—0.0200”)
Camshaft
End play
Radial clearance in bearing
Camshaft diameter
Lift height of cams
Bushing, diameter
0.160—0.300 mm (0.0063—0.0118”)
0.017—0.083 mm (0.0007—0.0033”)
43.992—44.008 mm (1.7320—1.7326”)
5.48—5.52 mm (0.2157—0.2173”)
44.025—44.075 mm (1.7333—1.7352”)
Cylinder head
Material
Special-alloy cast iron
Intake valves
Disc diameter
Stem diameter
Valve seat angle
Cylinder head seat angle
Width of seat in cylinder head
Clearance, hot engine
28.8—29.0 mm (1.1338—1.1417”)
7.938—7.960 mm (0.3125—0.3134”)
29.25—29.50°
30°
approx. 1 mm (0.040”)
0.30 mm (0.012”)
Exhaust valves
Disc diameter
Stem diameter
Valve seat angle
Cylinder head seat angle
Width of seat in cylinder head
Clearance, hot engine
26.3—26.5 mm (1.0354—1.0433”)
7.938—7.960 mm (0.3125—0.3133”)
29.25—29.50°
30°
approx. 1 mm (0.040”)
0.30 mm (0.012”)
Valve guides
43 mm (1.6930”)
Length, intake valve
Length, exhaust valve
Bore
Height above cylinder head spring face
Clearance, valve stemguide
49 mm (1 .9291”)
8.000—8.022 mm (0.3150—0.3158”)
10.7—11.0 mm (0.4212—0.4331”)
0.040—0.084 mm (0.0016—0.0033”)
36
| Categories | Volvo Penta Manuals |
|---|---|
| Tags | Volvo Penta MD6A, Volvo Penta MD7A |
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| Document File Type | |
| Copyright | Attribution Non-commercial |
(2 votes, average: 3.5 out of 4)
Marine readers have rated Volvo Penta MD6A MD7A Workshop Manual 3.5 out of 4.0 based on 2 product reviews. good manual just what I needed
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