Ford 8N Rear Axle Leakage

DBentley · Sep 10, 2014

I have my grandfather's '47 8N for restoration. The right rear wheel has all the signs of major leakage, including no braking action. I read all the great forum notes, ordered manuals, and have replacement seals and brake pad assemblies. Initially, the hub did not move on the axle, but loosening the axle nut and rocking the wheel allowed me to remove the hub without a puller. The hub must have been replaced sometime; it has only two flat head screw locations to hold the drum to the hub. Everything is soaked with oil, but I'm guessing the oil leak is coming down the shaft splines. Any way to inspect/measure the hubs and axle shaft splines for excessive wear before I put it back together with new seals?

JMOR · Sep 10, 2014

If axle will stick out beyond face of hub as in photo, it will not tighten to axle & will leak.

DBentley · Sep 11, 2014

Thanks for the picture. My hub / shaft splines are nearly flat to each other, and well within the outer surface where the washers fits.

DBentley · Sep 11, 2014

JMOR · Sep 11, 2014

Looks good there. In my sketch, in addition to the outer seal-to-hub joint, the violet lines indicate the other leak paths. abundant use of oil resistant sealer here and the 450 ft-lbs torque are important. Be sure hub seal surface is good/smooth.

DBentley · Sep 11, 2014

Thanks for the help! I really appreciate it.

Ford 8N Rear Axle Leakage

DBentley

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JMOR

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DBentley

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DBentley

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JMOR

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DBentley

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