Testing a sure grip out of the car

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ike61

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Just bought a 489 case cone type sure grip. How can I test this and make sure the sure grip is good?
 
In order to really know, you should disassemble the SureGrip and check the condition of the cone, check the clearance between the bottom of the cone and the bottom of the housing, and rebuild the unit as necessary
 
You cannot accurately do it. In order to measure breakaway torque, it needs to be assembled and axles installed. There is an adapter that mounts to the wheel studs to accept a 3/4" torque wrench. With the opposite wheel on the ground, keep increasing the torque setting until you force the cones to slip. Wherever the torque wrench is set, is what the breakaway torque is.

I know some of the clutch style units approach 1000 LB FT, but I don't know any specs for the cone style.
 
I was going to say you needed BIG ol arms to actually test it out of the car. LOL
 
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