Nissan 31375-41X06 Seal Oil Rear Extension (11.0 Mm)

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Oil leaks frequently occur due to wear of the extension housing oil seal, which is located at the extreme rear of the transmission. To replace the seal, raise the vehicle and support it securely on jackstands, then remove the driveshaft. Using a seal removal tool or a large screwdriver, carefully pry the old seal out of the extension housing, then using a seal driver, a large section of pipe or a very large deep socket as a drift, install the new oil seal. Lubricate the splines of the transmission output shaft and the outside of the driveshaft yoke with lightweight grease, then install the driveshaft. Be careful not to damage the lip of the new seal.

To successfully replace the driveshaft entails lifting of the vehicle to a position where the installment and removal of the shaft will could be done easily. Match the driveshaft and differential companion flanges to eliminate the problem of vibration. Perform the following: unwind the screw of the companion flange and reduce the droplight of the driveshaft from the differential, removing it from the transmission case, and, to prevent loss of its liquid, close the hole at the extension end of theshaft. It is advised that proper tool has to be used in order to remove the oil seal from the extension. For installation, clean all seal contact surfaces and put some amount of clean transmission fluid on the lip of the new seal. Insert the new seal into the extension housing of the machine and drive it with the correct drift tool. Place the shaft of the drive into the housing of the extension and align the splines of the two properly. Lift the driveshaft vertical with the companion flange marking, after that, you can install the flange and tighten the bolts with the torque of 29-33 ft. lbs. Last, briefly jacked up the car and check the fluid level, if required then pour some more into it.

Raise the vehicle and support it securely on jackstands. A flange holding tool or chain wrench will be required to keep the companion flange from moving while the nut is loosened.

It is important to match mark them to prevent vibration from incorrect positioning.

Pry out the old seal and discard it. Lubricate the lips of the new seal and the seal case with multi-purpose grease. Tap the new seal evenly into position with a seal installation tool or a large socket. Install the driveshaft and check the lubricant level, adding the recommended type of lubricant to reach the bottom of the filler hole if necessary.

Before installing the driveshaft, lubricate the splines of the transmission output shaft and the outside of the driveshaft yoke with lightweight grease.

Finally, install the driveshaft, being careful not to damage the lip of the new seal during the installation.

Remove the flange nut, withdraw the flange, pry out the old seal and discard it. Lubricate the lips of the new seal and the seal case with multi-purpose grease. Tap the new seal evenly into position with a seal installation tool or a large socket. Install the companion flange and apply a bead of RTV sealant to the ends of the splines visible in the center of the flange. Install the nut and tighten it to the specified torque. Finally, install the driveshaft and check the lubricant level, adding the recommended type of lubricant to reach the bottom of the filler hole if necessary.