Diff Dana 30 leaking at the pinion nut, should there be an oring or a gasket on the yoke?

[kingerbinger]

Dana 30 leaking at the pinion nut, should there be an oring or a gasket on the yoke?

 

[CJ]

It's a seal. You have to pull the pinion. Most auto parts stores should have it in stock. Just be sure to torque the pinion nut back down to 200-220 ft lbs.

 

[Patrick]

Couldn’t the leak be coming from the splines? In which case, remove yoke, clean splines with solvent, and reassemble using some sealer?

 

[Heavychevy]

Usually the pinion seal blows for a reason. Mostly the breathing tube this is attached to the top of the housing, will be stopped up. Everytime i have had to replace the seal the vent tube was plugged up.

 

[caveman]

Also check pinion bearing for wear.