Having problems with your 2004 Ford F250 ?
Pinion seal leaking
\015 After making a 2000 mile trip pulling 11000lb.travel trailer I saw oil leaking from rear pinion seal.I can install the new seal but need toknow how tight to replace the pinion nut.\015
Check your rear diff vent if pluged clean it out and clean up the pinion seal.sometimes if the leak is caused by pluged vent and has not been leaking long once vent is clean sometimes the leak will stop.there is not a specific torque amount because it is rotational torque(how hard to turn pinion).there is a crush sleve on the pinion and if torqued too tight or too loose brg preload will be wrong and brg damage could result.mark and remove drive shaft.remove rear wheels,brakes,axles.so when turning pinion you dont have any drag from brakes or axles.mark the position of the yoke on the pinion.remove yoke,replace seal,reinstall yoke be sure to replace pinion nut.tighten nut until it takes the exact same amount of force to turn pinion as before taking original pinion nut off.hope this helps.
Repair Help & Product Troubleshooting for 2004 Ford F250
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