Genuine Volkswagen Passat Differential Seal

Volkswagen Passat Differential Seal Parts and Q&A

• Pinion Seal
  857-525-275
  Q: How to replace the Differential Seal along with the drive flange seals and pinion seal on Volkswagen Passat?

  A:

  In order to replace the drive flange seals, one should first prop the rear portion of the car up in the air and place it on jackstands by ensuring that the front wheels are blocked. Un bolt the driveaxle of the drive flange and hold it with wire. Put a drain pan underneath the differential, hold the flange with a screwdriver, and screw out the center bolt to remove the drive flange. Use a seal removal tool to pop the oil seal out and stuff the new seal with grease and load it into the bore until it snaps. Where the drive flange is worn out it should be replaced. Change circlip on the drive flange, grease the contact surface and refit the drive flange, screwing the bolt to the required torque. Connect the driveaxle again and examine the level of lubricant in the differential. In the case of the pinion seal on a VW Passat, one should lift the rear, hold the driveshaft up, and the differential down. Calculate the distances between the flange mating surface and the pinion shaft and nut, and unscrew the pinion nut and take out the flange with the help of a puller. Remove the old seal and change O-ring on the pinion shaft. Apply oil to the new seal and carefully press it in and re-fit the pinion flange and nut with the distances being the same as before. Install the nut collar, clean the driveshaft CV joint, and lower it and tighten the bolts. Measure the level of lubricant in the differentials. In the case of the Audi A4, repeat the same process of unbolting the driveshaft, support the differential and de-bolt the torque tube. Take the sleeve and the shaft out using a puller and then pry out the old seal. Lubricate the new seal, reinstate the shaft and torque tube and reconnect everything, making sure to tighten all bolts to the stipulated torque and checking the level of the differential lubricant.