Car Vibrating

[PKRWUD]

Originally posted by 7000rpmisheaven
PKRWUD- how many ft/lbs do you put on driveshaft. Also I have a question about torque wrenches. I heard that you should get your torque wrench calibrated. How would I do this. Is there a way to test whether it is calibrated correctly? Should I even worry about it? About how much does it cost to have the driveshaft balanced.

I don't use a torque wrench on those bolts, I do it by "feel", but I would guess between 80 and 100 ft.lbs. of torque.

Torque wrenches need to be recalibrated to ensure accuracy. Testing the accuracy of yours requires a calibrated torque tester. Usually the manufacturer offers recalibration as a free or inexpensive service. I try to have mine done once a year, but I use them every week. One thing you can do that will help maintain your torque wrenches accuracy is to make sure it's not "loaded" when you put it away. That means reversing the tension until the adjuster feels almost loose. Loose isn't good, but almost loose. Then tighten it a few pounds. For example, on my 1/2" drive Mac torque wrench, I like 25 ft.lbs. I back my wrench down to 15 ft.lbs., and then go up to 25 ft.lbs. before puting it in it's case. Every time. Also, FWIW, the best way to set your wrench at the desired setting for torquing is to surpass that amount by 10 pounds, and then go back to the desired setting.

Having your driveshaft balanced should be fairly cheap. Look up a Drive Line Service or Repair facility in the Yellow Pages, usually under Drive Shafts, and give them a call for an estimate.

Take care,
-Chris