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Where does the pinion seal go on a car differential?

Where does the pinion seal go on a car differential?

The driveshaft connects to the differential via the pinion shaft – a short shaft that extends from the front of the differential. Your vehicle’s differential is filled with fluid – like engine oil but thicker.

What to do if front diff pinion seal leaks?

If you only replace the seal, lightly lube the pre-installed seal, then try to equally (push) install that seal into the pinion opening as not to warp the seal. After that’s done, clean down the whole oil saturated area. Then top off with the same synthetic 75-90 rear end dope. NEVER mix synthetic with any organic oil ever.

When to know if your pinion seal is about to fail?

Because the pinion seal prevents differential fluid from leaking out and damaging the gears inside, it’s important to know the signs that indicate the seal is beginning to fail. These include: If you are experiencing any of these problems or suspect that the seal is about to fail, a certified mechanic can help.

Why does my differential have a low fluid level?

Differential has low fluid If you notice your differential has low fluid, chances are it is leaking from the pinion seal. This needs to be fixed in a timely manner because as the fluid levels drop, the gears will wear down as the friction increases. Without a proper working differential, your vehicle will not be able to be driven.

How does a pinion seal on a differential work?

This seal is combined with an ‘oil slinger’ to prevent the oil from the differential from running out of the differential housing as the pinion shaft is turned by the drive shaft. It is round, and uses a rubberized seal in the shape of a continuous circle to surround the pinion shaft.

When do you need a new pinion seal?

You may need a new pinion seal if you hear a whining noise while driving, or if you notice leaks or low fluid in your differential. Replacing the differential seal can assure that your differential has plenty of fluid, which can help it last the life of your vehicle.

Are there different types of differential pinion flanges?

There are lots of different Pinion flanges fitted to the different differentials and axles of Land Rovers. Some of the pinion flanges are compatible with different oil seals and some aren’t. Flanges usually have mudshields fitted and this is mostly what dictates the type of oil seal.

What causes oil to return to the differential case?

This causes the oil to return to the differential case instead of flowing between the seal and pinion shaft. It should be noted that these seals are not 100% effective against stopping oil, and in many vehicles seepage is considered normal after several thousand miles. What are the symptoms of a bad Differential Pinion Seal?

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Ruth Doyle