Wheel bearing torque spec - Vintage Mustang Forums

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post #1 of 6 (permalink) Old 03-25-2005, 01:12 PM Thread Starter
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I am reinstalling wheel bearings on a 65 with disc brakes and have come across 2 greatly different torque specs. Both say to tighten to 17-25ft/lbs then back off half a turn. Then one source says to retorque at 10-15ft/lbs, the other source says 10-15lb/inch(2 sources say this spec). Anybody have the correct answer?? Thanks.
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post #2 of 6 (permalink) Old 03-25-2005, 02:17 PM
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On a 1973 that came from the factory with disk brakes. The factory manual states 17-25 ft lbs with wheel rotating, back off 1/2 turn,tighten adjusting nut to 10-15 inch lbs and install cotter pin.

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post #3 of 6 (permalink) Old 03-25-2005, 03:01 PM
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I think that's a misprint. You can tighten to that by hand ... with a broken hand!

I do like the first one said:
tighten to 17-25ft/lbs then back off half a turn. Then one source says to retorque at 10-15ft/lbs

I've never had a problem doing it that way.

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post #4 of 6 (permalink) Old 03-25-2005, 04:03 PM
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The 10-15 in/lbs is correct per the Chiltons manual. It actually says in my Chiltons manual "10-15 in/lbs or hand tight". If you do this, you'll have loose wheel bearings. Re-torqueing to 10 ft/lbs will eliminate any wobble without overtorqueing the nut and bearings. I just retightened mine to this last week. Just be sure your wheel bearings are packed with grease.

The Buick section of the same manual actually was completely different than the Ford procedure and Buick's used the same type of tapered wheel bearings ( I just choose another section of the manual randomly to check how other car makers recommended wheel bearing nut adjustment). The Buick section said to re-torque to 11 ft/lbs. I don't know why Ford had them so loose...they would wobble quite a bit with hand tight nuts.

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post #5 of 6 (permalink) Old 03-25-2005, 11:08 PM Thread Starter
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The 67 Mustang shop manual also says 10-15inch/lb. I did use this spec and it seems to be more than hand tight.
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post #6 of 6 (permalink) Old 03-26-2005, 09:44 AM
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Here's how the ol timers do it.....Spin the hub while tightening the axle nut until it is very firm, stop spinning the hub. With the wrench on the nut, loosen about 1/2 turn, gently sling the wrench rotating the nut in a tightening direction allowing gravity to stop the rotation. Take a screwdriver and make sure the axle nut washer will move with only a little effort.

The bearings are set, torque is correct.
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