are my viscous diffs boned?

[kronus]

I've picked up an iX touring recently that's had a lot of questionable things done to it. All the iX stuff in unknown condition and I've been trying to shape it up.

I'm trying to figure out if I need to prioritize a differential swap since I have most of the driveline out right now.

Both my front and rear viscous 4.10 diffs behave like open diffs up in the air - absolutely no resistance. Is this normal? How can I measure the health of the viscous couplings? I'm not super familiar with viscous differentials.

Thanks

[kronus]

ah. maybe the front one is open?

[spdracrm3]

ah. maybe the front one is open?

Front is an open diff ,rear lock one wheel and it should be hard to turn other rear wheel in neutral

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[kronus]

Front is an open diff ,rear lock one wheel and it should be hard to turn other rear wheel in neutral

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great, thank you.

[The Dark Side of Will]

Alternatively, put it in park or 1st, jack the rear end up and try to turn one with both off the ground. A good VC will be stiff.