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torque setting

Submitted by roy_masterman on Mon, 02/07/2018
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Commando

Hello all , can anybody confirm the torque setting for the gearbox mainshaft nut on a 1972 commando ?

I have just fitted a new one and tried to torque it up to 70 LBS as per my manual . The thread on the nut has stripped . My torque wrench is good quality and I haven't had a problem before .

Any advice appreciated !

Submitted by christopher_winsby on Mon, 02/07/2018

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Check out Old Brits Norton Technical articals. They say 40 Ft/Lb and Loctite in Gearbox assemble.

My Factory MK3 manual says 40/50 FT/LB. Remember Torque settings are dry and not with grease on.

Submitted by roy_masterman on Mon, 02/07/2018

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thanks for info Christopher , just looked at that and the recent Real Classic item , both quote 40-50 lbs .

Wish I had seen them before I did the job . My manual quotes 70lbs for main shaft nut at right hand end !

I think it must refer to the clutch , left hand , end nut .

I think the shaft thread is ok so I will try again with another new nut , RGM must think I have gone mad !

 


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