Posted by Vaughn [172.70.211.70] on Tuesday, August 16, 2022 at 08:53:51 :
In Reply to: Re: Wheel bearings? posted by Jim Lee [172.71.150.177] on Monday, August 15, 2022 at 21:31:25 :
Of all the Military and Civilian manuals covering the WC 1/2, 3/4, 1.5 tons and the FFPW I have read, none refer to a 100 ft-lbs of torque on those nuts, so I don't know where they are getting that information.
Use a 12 inch rod or screw driver, and rotate the tire as you turn the nut. Once the nut stops, check your play. You don't have to muscle the nut, the spinning of the wheel does the job. If you have some play, spin the wheel and tighten some more until no side play. That's how it's done according to the manuals.
I will say torquing to 100 ft-lbs is a lot of friction on the bearings and will generate more heat which is not good. This may have caused the hub to warp and now binds. I know MSeries works on larger trucks that may call for 100 ft-lbs and they may be applying that to the Dodge vehicles as well. Here is one of the manual's instructions.
TM 9-1808B
56-57
ORDNANCE MAINTENANCE-POWER TRAIN, CHASSIS AND BODY
FOR BASIC VEHICLES, 3/4 TON 4 x 4, AND 1-1/2 TON 6 x 6 (DODGE)
d. Adjust Wheel Bearings. Turn the inner adjusting nut up tight and then back it off about 1/6 of a turn. Install the adjusting nut lock, making sure that the dowel pin in the inner adjusting nut enters a hole in the lock. It may be necessary to turn the lock over or even turn the inner adjusting nut slightly to permit the dowel pin to enter
one of the holes in the lock. With the lock over the dowel pin, install the outer adjusting nut and tighten it securely.
As you can see, it does indicate 100 ft-lbs. nor refer you to a table for torque specs. All you want to do is make sure you don't have side play in the bearings, while not over tightening the bearings, that's why you mount the tire/rim on the hub. This is the procedure I follow to avoid over heating parts.
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