Torque setting for clutch bolts

[Mohawk]

Just putting the clutch back together on the 1980 MHR. Can anyone help with the torque setting for the 6 bolts in the clutch drum and also for the side engine casing.

Searched the other threads but couldn't find this info anywhere.

Many Thanks

[Craig in France]

Just putting the clutch back together on the 1980 MHR. Can anyone help with the torque setting for the 6 bolts in the clutch drum and also for the side engine casing.

Hi Mark,

Ducrappi weren't very good at specifying torque values, especially for 'less-stressed' fasteners like these. That said, the Dramah owner's manual lists these values for engine casings bolts (1 Kgm = 9.806 Nm = 7.23 lb/ft).

6mm, 0.8-1 Kgm
8mm, 1.5 - 2.0 Kgm
10mm, 2 -2.5 Kgm.

These values are pretty conservative (around 75%) in comparison to the theoretical max torque values of 8.8 grade mild steel bolts, but I suspect this is probably a reflection of the fact that they're threading into a soft material.

For the clutch bolts, do them up to something similar - and if you're still worried, use some thread lock.

HTH

Craig

[Mohawk]

Thanks for the info, really appreciate your help