setting bearing preload...what is a spring scale?

[THenningsen]

I am replacing the front wheel bearings on a 2wd 1999 honda passport. the manual says that it is necessary to set the bearing preload by tightening the axle nut to 22 ft/lbs, then fully loosen the hub nut. tighten the hub nut using a "spring scale" on the wheel pin to 4 lb. What is a spring scale and where do I get one?

 

[Hoefler]

A fish scale would be the best example I can think of. If you can't find one or don't want to use one, good rule of thumb that I was taught long ago was; torque to the specified amount spin hub clockwise, re-torque, back nut off with out touching the hub, tighten finger tight and back off just enough to align the pin hole. I have used this method on the smallest hubs to the over the road trucks and never had a problem in 25+ years.

 

[rbattelle]

Sounds like Hoefler's description is right-on. Search on "spring scale" at McMaster-Carr.

Ryan

 

[THenningsen]

I went to walmart and bought a cheap fish scale. My understanding on this is that I put the hook on one of the lug nuts and pull, exerting enough force to start the rotor turning right? Once it is within the required 2. 6-4. 0 lbs to make the rotor turn, then I set the lock ring. Right?

 

[bmoeller]

Better to use string. Will give you a little more time and a better reading. Tie the string on one lug nut, and wrap the string around the outside of the rest of the lugs once or twice, like you would to wrap it around a box.

 

[rbattelle]

If I were doing this, I'd probably get a 4-lb weight and hang it from the string. WAY easier than trying to read a scale in an instant.

Ryan

 

[JesseJ]

Hoefler is right on, I was taught the exact same thing. A lot easier than trying to screw with a spring scale. Don't even own one.