Having problems with your Ford E-350 ?
How i can fix leaky diffrential in ford e350 - E-350 Ford Cars & Trucks
Where is it leaking? If it is the back cover, all you need to do is take the bolts out of the cover (with a drain pan underneath) clean it, and reinstall it with a new gasket or RTV sealant and fill with fresh gear oil. If it is a pinion seal (where the drive shaft goes in) remove the drive shaft, marking its position relative to the yoke on the rear. Wrap the rear universal joint in tape if necessary to prevent the u-joint from coming apart (trust me, you don't want that!) Mark the position of the pinion nut to the yoke and remove it. Pull the yoke and the seal. Install a new seal, coating the outside edge with RTV to seal it to the housing. Reassemble, making sure your marks are lined up when finished and top off with fresh gear oil as necessary. If it is an axle seal (leak is at a wheel) the process varies depending on if it is a floating or semi-floating rear. Most E-350's should be floating, but I can't be sure. A floating axle protrudes through the wheel several inches in the center and has a circle of 6-10 bolts around it. A semi-floating does not protrude through the wheel at all and has no bolts. Message me back with which type you have and I'll give you more specific directions if it is an axle seal. If you need more detailed directions for either of the others, message me as well. Good luck.
Repair Help & Product Troubleshooting for Ford E-350
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