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Torque for castlenut

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I HAVE A 2001 SUBARU LEGACY OUTBACK H6-3.0 AND I WAS WONDERING WHAT IS THE TORQUE OF THE CASTLENUT ON THE CV JOINT? THANX:rolleyes:

You talking about the axle nut? I think it's around 140 ft-lbs.
140 ft lbs it is. It's really hard to over tighten them; just be sure they are tight enough. Even tighter doesn't matter.

do not torque with the wheel on the ground, or that axle having car weight on it. need car off ground and brake the caliper with a prybar/punch either bracing the stubs, or the vents. If you torque it with weight on the car, it will have a tendency to warp the rotor, and or bearings and hub.

 

Tighter can warp the rotors and cause bearing failure. Torque it to SPEC please.

do not torque with the wheel on the ground, or that axle having car weight on it. need car off ground and brake the caliper with a prybar/punch either bracing the stubs, or the vents. If you torque it with weight on the car, it will have a tendency to warp the rotor, and or bearings and hub.

 

Tighter can warp the rotors and cause bearing failure. Torque it to SPEC please.

 

 

Too loose and the inner bearing races could separate under load, that'd be BAD.

Too tight, and you could distort the bearing races, that'd be BAD.

 

Too tight but not tight enough to distort anything would be just fine, as you cannot over-preload by torquing the nut too tight.

 

My gut feel is a little loose would be worse than a little tight, but at those torque specs that's not something you can tell by hand, so- Torque it to SPEC since you need a torque wrench anyway.

 

 

 

Dave

How exactly can over torquing the axle nut warp the rotor?

 

140 ft lbs is a lot, unless you have a 4 foot bar on it, you don't really have to worry much about getting it too tight.

How exactly can over torquing the axle nut warp the rotor?

 

140 ft lbs is a lot, unless you have a 4 foot bar on it, you don't really have to worry much about getting it too tight.

 

If you over-torque it you can distort the hub face, and if that distorts the lug nuts will clamp the rotor to the distorted hub face.

 

 

Dave

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