Torque Wrenches Are Important

[ExplorerDMB]

This thread is to cover most just Wheel Torque, but any nut/bolt that has a torque specification should be followed and used.

Torque - The moment of a force; the measure of a force's tendency to produce torsion and rotation about an axis, equal to the vector product of the radius vector from the axis of rotation to the point of application of the force and the force vector.

Isn't that a lot of fun? Anyhow, Torque is basically the force that is put onto, say a Lug Nut - it's a measurement more-or-less.

How To Measure Torque:


Torque is most frequently measured in the automotive field by a "Torque Wrench". This wrench is just like a normal 1/2" (or other sizes) rachet wrench - except usually longer (especially 1/2"). Most torque wrenches have settings on them (usually in Ft. Lbs.) which can be used to change the torque setting from lightly snugged to extreme tension. That is why they make specifications.

For the Explorers, 100 Foot Pounds is the specification for Wheel Lug Nuts. This specification is tight enough to keep the wheels where they are suppose to, keep the wheels straight on an axis, and also decrease tension on the rotor which may result in warpage or mis-shaping. It is extremely important to follow mechanical specifications from the manufacturers - if you don't problems may occur later and cost you more money!


Newton Meter - what the ____ is that?


Newton Meter(s) is another measurement for torque (obviously metric), but can be converted to Ft. Lbs. To convert any calculation of torque that you may have click here: Online Conversion Calculator

That chart will allow you to change from Nm's to Ft. Lbs to In. Lbs! More than likely those three will be the more frequent ones you'll see on an automobile.



So What Do I Need?

To do work properly, especially on wheels, you will need a 1/2" Torque Wrench. They come in many different types - most popular is a "click-type" torque wrench which gives a "click" sound once it reaches the torque spec. Other types involve torque indicators which can most likely give a faulty reading.

Here is a picture of a normal torque wrench (Ft. Lbs):




New torque wrenches have electronics on them. They have a few buttons to push and allow you to change the setting via push buttons. These are somewhat more accurate because there is no internal parts (i.e. springs) like in the other ones. These give a vibration when the torque spec is reached.

Here is a picture of an Electronic Torque wrench:




Sequence?


Torque Sequence is the way (an order) of which bolts/nuts you do first. These are found mostly on heads, intakes, wheels, and a few other various things (mostly found on engine components). A good rule of thumb for wheel torque sequence is STAR! A start pattern will push the wheel evenly onto the hub/mounting surface! See chart below:





Please be careful when messing with wheels. You can cause a lot of damage by not tightening the wheel enough and cause just as much damage to the vehicle by tightening too much. Be careful, read your users manual, and also look for specifications!

-Drew


Disclaimer: This is in no way affiliated with Explorer Forum. This informational thread/post is strictly the opinion of the origional writter. Explorer Forum, the writer, the members of this board, will not be accountable for anyones actions regarding this thread/post. Any accidents, mishaps, dangerous event occuring while acting out this thread/post is of no responsibilty of Explorer Forum and it's members. Please be careful when working around vehicles and always have supervision and or others working with you.

[spindlecone]

Care for your TQ wrenches
Keep them in the orig box if possible, ALWAYS run the spring loaded type down to zero after using and putting them back in your toolbox