pinion nut torque

[eds66bronco]

got the new chunk from mike in the axle and the tag said to torque the pinion yoke nut to 210 ftlbs.( it came with the solid preload spacer so i could reuse my yoke) i got to about 150 ftlbs and noticed the pinion was getting harder to turn. how much resistance should there be turning the yoke. don't want to over torque and roach my new gears.

 

[broncnaz]

you wont hurt the gears pinion bearings maybe but not gears anyways the preload on the pinion should be between 12 -32 in lbs. Also the torque for the pinion nut can be set between 180-220 Ft LBS.

 

[eds66bronco]

i may not be using the right term but is the preload how much force it takes to turn the pinion once the pinion nut is torqed? the old third member i removed, i was able to spin it with little to no resistance. the new one has more resistance than i expected. the old setup felt like a properly setup front axle hub in terms of force to turn.

 

[welndmn]

i may not be using the right term but is the preload how much force it takes to turn the pinion once the pinion nut is torqed? the old third member i removed, i was able to spin it with little to no resistance. the new one has more resistance than i expected. the old setup felt like a properly setup front axle hub in terms of force to turn.

Your correct on your preload terms.
That solid spacer should of come with a shim pack, you need to add some shims until you have the correct preload, or rolling restince.

 

[eds66bronco]

got it already setup from mike at complete offroad. he said all i have to do is put my yoke on and torque the nut to 210. am i missing something? he never mentioned needing to shim anything!?? ?:?

so if i've met the preload amount before reaching the 210, i should not torque any further?

 

[broncnaz]

Your preload wont change with more torque but you still need to check it as there could be a differance between yokes causing more or less preload but as long as your between 12-32 in lbs preload your good.

 

[eds66bronco]

guess i need an inch lb torque wrench unless there is another way to do it

would 12 inch lb=1 ft lb? don't know if my torque wrench will set that low

the pinion moves with no effort until the last little crank of the nut then it starts to have resistance

 

[broncnaz]

inch lb beam type torque wrenches are usually pretty cheap. There needs to be some resistance thats so the bearings have the proper tightness once the seat in thats why there is a preload requirement. if you dont have enough preload the bearing will be too loose if you have too much they will be to tight and burn up.

 

[eds66bronco]

cool, thanks for the info.