Volvo Owners Club Forum - View Single Post

JDRubin · Dec 13th, 2012, 01:02

If you don't use the proper tool, one way or the other, the crankshaft resists the torque necessary to remove the nut. So locking the engine will cause the torque to be resisted by the entire crankshaft, and using an impact driver will cause the front of the crankshaft to take the load. Incidentally, I have an old Gravely tractor and they recommend allowing the crankshaft to resist the torque. They actually recommend removing the spark plug, rotating the engine so the piston is down, then filling the cylinder with a length of rope! The Gravely engine is really beefy and can probably handle this abuse without damage. In my opinion, the only safe way to remove the Volvo nut is to use the tool as intended. I'm sure the people who built the car were aware of the existence of impact drivers and probably the rope trick as well.

Dec 13th, 2012, 01:02	#15
JDRubin New Member Last Online: Dec 29th, 2012 19:30 Join Date: Dec 2012 Location: Rochester, NY	Crank Lock If you don't use the proper tool, one way or the other, the crankshaft resists the torque necessary to remove the nut. So locking the engine will cause the torque to be resisted by the entire crankshaft, and using an impact driver will cause the front of the crankshaft to take the load. Incidentally, I have an old Gravely tractor and they recommend allowing the crankshaft to resist the torque. They actually recommend removing the spark plug, rotating the engine so the piston is down, then filling the cylinder with a length of rope! The Gravely engine is really beefy and can probably handle this abuse without damage. In my opinion, the only safe way to remove the Volvo nut is to use the tool as intended. I'm sure the people who built the car were aware of the existence of impact drivers and probably the rope trick as well.