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I am getting ready for my first tire rotation at 9,000 miles and have been told that I should use a torque wrench to tighten the lug nuts. This is suppose to prevent warping of the brake rotors. Is this true, or am I the target of the old knuder valve trick?
It's true. But more importantly, you need to tighten them down in cycles. Do not tighten one lug nut all the way before starting the next. Maybe tighten all of them half way, then go back and tighten them all further.
Last edited by Hoowasat; Jan 15, 2005 at 06:05 PM.
Thank you for the quick reply! One more question though. How many pounds of torque do you recommend for the lugnuts. I was thinking of setting the wrench about ten pounds light and then re-torquing to spec, or is that a waste of time? Hmmm, that turned into two questions
I torque them to about 90 lbs.....then go around again at 140 lbs.......a light coat of 30 weight oil on the studs will help you get a proper torque and prevent rust on the studs........a light coat though so it does not fling itself all over the rims.
The rotors on these trucks are susceptible to torque warp. Ford came out with a method of torquing to address this. They have a specific pattern for tightening, don't have it in front of me but its on the net somewhere. The torque is 165 foot lbs in 3 increments, each increment following that pattern. They also state to use a small drop of oil in between the nut and the built in washer thats on the nut.
Do NOT put oil on the threads of any fastener that requires a specific torque unless the manual or instructions call for it. What is torque? A resistance to turning. If you lube the threads you just reduced that resistance. Your torque wrench will still click at 165 but you just put a lot more pressure on your wheels. The opposite would be true if your threads were dirty or rusty. If they were very rusty your torque wrench could click at 165 with the lug nut not even touching the wheel.