I couldn't find an exact call for the torque value but here are some general spec's on other parts of the engine, related to bolt size:

6mm 9-11Nm 7-8Ft-lbs
8mm 20-25Nm 15-18Ft-lbs
10mm 40Nm 30Ft-lbs
12mm 70Nm 52Ft-lbs

__________________
Sam

84 300SD 350K+ miles ( Blue Belle )