unplug the stop solenoid, get the bar wedged under the offside chassis rail, then touch the starter.
it'll bang like a gun when it goes!
i,m a bit interested in this thread,with a camshaft job on the way i,ll be tackling the dreaded crankshaft nut myself but what about tightening the nut up afterwards i believe it has to be about about the 240nm mark(is it a good socket and lump hammer job)
Remember, the actual TORQUE is not what you are trying to achieve here. Torque is only a method of setting the TENSION of the bolt or stud LONGWAYS, like trying to stretch it. If the threads are greased with molygrease, the same torque will produce nearly TWICE the tension as dry threads. This is almost always good.
CharlesY.
well now you,ve lost me,all i want to know is a good simple method of re-tightening the crankshaft pulley bolt,anyone out there with a good non-scientific answer please reply.cheers
Incorrect.
A torque setting (ie: 240 nm) is the rotational force applied to the bolt, the bolts longitudinal force is controled by the pitch of the thread and the rotational force of torque applied to it .
If the threads are lubricated before assembly, when they should in fact be assembled/tightened in a dry state, the frictional force between the threads (crankshaft/pulley bolt) will be greatly reduce allowing the bolt to rotate further, allowing the bolt to apply a much higher longitundinal force.
And in't that EXACTLY what In just said?
Some manuals will state two torque setting for the same bolt, a dry torque figure and a lubricated figure, the dry figure is always higher due to no lubrication...
The torque setting plus thread pitch allows the designer to control the longitundinal stretch of the bolt, if a bolt passes it mechanical optimum stretch point, it looses it ability to apply the longitundinal force required. Hence stretch bolts that are a one use item..
DRY threaded bolts COME LOOSE SOONER, because there always is a risk that between the threaded end and the head there remains TORSION in an UNLOOSENING direction. The longer they are the WORSE the risk is.
PLEASE BE TOLD. This can be very dangerous indeed.
In general principle, ALWAYS apply copper-grease or similar AND do NOT exceed the stated torque settings unless you have a good reason to do so.
CharlesY
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