I managed to pick up a Haynes manual for a Sierra on E-Bay for 1p plus postage.
It defines the torque settings to be as follows:
Diff side bolts: 60nm plus locktite
Diff long bolts: 80nm
Propshaft to diff bolts: 60nm plus locktite
I have also tightened the diff stabilisation bolt to 50nm
So I know where I have been with the torque wrench I have added a spot of red paint on each tightened bolt
