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How do you check the viscous coupler? V70-XC70 98AWD

This one is for John O or Rich K. I read in a post yesterday that there is supposed to be a way to check viscous coupler functions with a floor jack and a torque wrench. Any truth to this, and if so, how?

I have over 55,000 miles on my AWD, and I am curious.

Also, thought I would mention my experience with PBR deluxe dustless front brake pads. In only a year, I destroyed a set of rotors by overheating them with these pads. The symptom was a delay in braking action when the pads/rotors were wet from a slight drizzle, until the pads/rotors dried off. I would have to exercise the brakes every 5 miles or so or expect a much longer time to stop.

The problem went away with new factory pads, and stopping seems to require much less petal pressure, and the stopping distance seems 20% shorter. I guess I will live with the dust.

Regards,

Mike Harris in Sandy Eggo








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Re: How do you check the viscous coupler? V70-XC70 98AWD

Easy, if you're not hearing any unusual noises or vibrations when making turns (other than than usual steering stops in front that is), then you have nothing at all to worry about. Do nothing.

The test that the latest SB previosly mentioned here is to test a part of the viscous coupler only and so far I havent seen where that test has been of any benefit to us techs ("so far......."), at least in our shop.








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Re: How do you check the viscous coupler? V70-XC70 98AWD

Thanks John, that's a load off.

Any comment on aftermarket brake pads? I am of the opinion now that stock is best. I had to replace rotors prematurely because I installed PBR Deluxe pads from IPD, and they seem to have burnt out the rotors (numerous hot spots on the front ones) Back to stock and the car seems to stop with much less petal pressure, and seems to stop much quicker.

Regards,

Mike Harris in Sandy Eggo








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Re: How do you check the viscous coupler? V70-XC70 98AWD

I'd agree. I use OEM brake pads in my Volvo and it stops on dime when needed. They're dusty, no doubt, but if you wash the car and wheels occasionally, it's not really all that bad.







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