Brake Info
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Elder User
Joined: Oct 1999
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From: Kelseyville USA
Brake Info
On a 1972 F-250 12"x2.5" drum brakes (rear)...
The best Info I can find says to `Torque` the Inner (first) locking nut on the axle housing to 50-70 ft lbs then back it off to .001-.010 thousands clearance( Is this end play? )... then add the lock ring and then the last lock nut and tighten..
I this correct? Is the Preload that high?
Thanks for any help...
__JOHN__Õ¿ö
72 F-250
The best Info I can find says to `Torque` the Inner (first) locking nut on the axle housing to 50-70 ft lbs then back it off to .001-.010 thousands clearance( Is this end play? )... then add the lock ring and then the last lock nut and tighten..
I this correct? Is the Preload that high?
Thanks for any help...
__JOHN__Õ¿ö
72 F-250
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Joined: Aug 1999
Posts: 1,485
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Brake Info
Im not exactly sure just where your at. If you are talking about the bearing retainer nut, 50-70 lbs sounds way too much to me. I think that much torque wold damage the bearing or the race. I could be wrong, though. I have always tightened the nut while turning the drum. when the bearing starts to drag, I back it off a little and lock it down. Maybe someone else can be of more help.
Nathan
Nathan
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Elder User
Joined: Oct 1999
Posts: 917
Likes: 3
From: Kelseyville USA
Brake Info
Yes, On the Axle tube there are 2 lock nuts that hold the Drum/bearings on ... the first nut Loads up against the bearing race. I agree with you that 50-70 ft lbs is Way toooo much.. I did what you suggested by applying torque as I turned the brake drum till things snuged up/no slop then stoped there.
then I added the `Lock` retainer then the last lock nut and tightened things up.
__JOHN__Õ¿ö
72 F-250
then I added the `Lock` retainer then the last lock nut and tightened things up.
__JOHN__Õ¿ö
72 F-250
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