When factory specs just don’t cut it
Q: Should I be concerned about exposed ABS tone rings?
No, it is not better to have the tone ring enclosed. This is a commonly misunderstood issue.
ABS ring seals aren’t great and frequently do a poor job of keeping debris out. If debris gets in and can’t easily get out, damage could occur. We believe that exposed ABS rings can easily shed water and debris that a seal might retain.
In fact, the tone rings on the rear of many Dodge trucks and millions of other vehicles equipped with 4-wheel ABS, are completely exposed to the elements. Vehicles with older 3-channel and single-channel ABS systems have a single rear sensor that plugs into the rear diff. Newer vehicles with 4-channel, 4-wheel ABS usually have a sensor at each rear wheel, near the brakes, that is completely exposed to the outside world.
The stock tone ring on the front of Dodge, Ford and GM trucks is enclosed inside the front Unit Bearing because that is the least expensive way to package and deliver it to the assembly line. This is true whenever a Unit Bearing is employed on the front axle by the OEM.
Q: How do I know if I have coarse on fine thread studs?
Usually there is a marking on the lug nut. 14x2 is coarse, 14x1.5 is fine.
Q: My truck doesn’t have locking hubs. Why would I want them?
Locking hubs, in the unlocked position, create far less drag on the system. This drag results in poor fuel mileage and accelerated wear on your drive shaft.
Q: Will I see an increase in fuel mileage?
Our hard testing has shown improvements of ½ to 1½ MPG. However, many customers are reporting gains of 2 to 3 MPG. Mileage will vary with overall truck condition, geographical area and vehicle modifications.
Q: You state that my truck will handle better and ride smoother. Why?
With the locking hubs in the unlocked position your inner axle will no longer turn. With no axle u-joint bind your steering is improved. Additionally, your front drive shaft will no longer turn, preventing in-cab vibration and creating far less wear and tear on your drive shaft u-joints.
Q: Where can I find replacement parts?
Your local parts store should have everything you’ll need. You’ll find a full listing of part numbers with your installation instructions. We also have them posted here (link to instruction page).
Q: Can I install this kit myself?
A good ‘backyard mechanic’ can do the job in about a day. A competent shop time can usually get the job done in 5-6 hours.
Q: Will I need any special tools?
A good set of hand tools and a few specialty tools are required.
You’ll also need:
Q: I’ve heard that Dodge unit bearings can be difficult to remove. Do you have any advice on removing them?
We recommend 2 pry bars on the back side of the axle yoke and pry the axle outwards. This will force the unit bearing out.
Q: If I have a unit bearing failure, what other damage can occur?
If the unit bearing failure is caught very early it is possible that you may see no other damaged parts. Complete unit bearing failure may cause the tire and wheel assembly to fall off of the vehicle. Damage to the brake pads and rotors are very common with any type of unit bearing failure.
Q: Is there a Free-Spin™ kit for Dually applications?
For F250 and F350 dually applications you’ll need special wheel adapter. This adapter can be found at http://www.arrowcraft.com/products.php or by calling them at 248-280-0210.
Q: How frequently should I service my Free-Spin™ kit?
40K or sooner if it’s severe duty and in cold environments. When you service the Free-Spin™ kit you should repack the bearings, fill the hub with fresh axle grease, and inspect for wear.
