Oldsmobile 15969051 Seal,Transfer Case Adapter

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To remove and replace a transfer case seal on a vehicle, first raise the vehicle and support it securely on jackstands. Remove the skid plate and, depending on which seal you're replacing, remove either the front or rear driveshaft. To remove the seal, pry it out with a screwdriver or seal removal tool, being careful not to damage the seal bore.

Oil leaks frequently occur due to wear of the extension housing oil seal, but fortunately, replacing this seal is relatively easy and can be done without removing the transmission from the vehicle. The extension housing oil seal is located at the rear of the transmission where the driveshaft is attached. If there is leakage at the seal, raise the vehicle should and support it securely on jackstands. If the seal is indeed leaking, transmission lubricant will be built up on the front of the driveshaft and may be dripping from the rear of the transmission.

A seal driver or large deep socket can be used to drive the new oil seal into the bore squarely and ensure it is completely seated.

The extension housing oil seal is located at the extreme rear of the transmission, where the driveshaft is attached. If leakage at the seal is suspected, raise the vehicle and support it securely on jack stands. If the seal is leaking, transmission lubricant will be built up on the front of the driveshaft and may be dripping from the rear of the transmission.

The old oil seal should be carefully pried out of the rear of the transmission using a seal removal tool or a large screwdriver, taking care not to damage the splines on the transmission output shaft.

The driveshaft must be removed.

A seal driver or large deep socket can be used to drive the new oil seal into the bore squarely and ensure it is completely seated.

The oil seal can be carefully pried out of the rear of the transmission using a seal removal tool or large screwdriver.

To remove the oil seal and bushing, remove the driveshaft and carefully tap the dust shield (if equipped) to the rear and remove it from the transmission.

Reinstall the U-joint flange and nut (if equipped) and tighten the nut to the torque specifications. Reinstall the dust shield (if equipped) by carefully tapping it into place.

The new seal should be driven into place with a seal driver or large socket, making sure that the outside diameter of the socket is slightly smaller than the outside diameter of the seal.

The oil seal can be carefully pried out of the rear of the transmission using a seal removal tool or large screwdriver.

The final step is to reassemble the vehicle in the reverse order of removal.

The new seal should be driven into place with a seal driver or large socket, making sure that the outside diameter of the socket is slightly smaller than the outside diameter of the seal.

Depending on which seal you're replacing, either the front or rear driveshaft needs to be removed.

The new seal should be driven into place with a seal driver or large socket, making sure that the outside diameter of the socket is slightly smaller than the outside diameter of the seal.

If the oil seal and bushing cannot be removed with a screwdriver or pry bar, a special oil seal removal tool will be required.

If the seal is leaking, transmission lubricant will be built up on the front of the driveshaft and may be dripping from the rear of the transmission.