Symptoms of a Bad or Failing Pinion Shaft Oil Seal

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The pinion shaft oil seal is located in the differential. The purpose of the seal is to keep fluid in the differential, so it can stay lubricated and run properly. The pinion shaft oil seal is located behind the pinion flange, which is what attaches to the driveshaft flange. Pinion shaft oil seals only last a certain amount of time as heat, wear, and tear break down the seal and require it to be replaced by a mechanic. There are a few things to watch out for when your pinion shaft oil seal starts to go bad.

1. Leaks around the differential

Due to normal wear and tear, it is not uncommon for pinion shaft oil seals to leak. Once it starts leaking, you will notice the leak around the differential. This can be a small wet spot, or actual drops of oil. Either way, you should contact the professionals at YourMechanic to have your pinion shaft oil seal replaced so the problem does not get worse.

2. Low differential fluid

If there is a small leak in your pinion shaft oil seal, another symptom you will notice is low fluid in your differential. Make sure to keep this fluid full while operating your vehicle, and make an appointment with YourMechanic to check your differential fluid. If the differential runs low on fluid, or completely runs out of fluid, then the differential can become destroyed, causing much bigger problems.

2. Grinding noises

A grinding noise while your vehicle is running is a sign that your differential fluid is low or it has run out of fluid. This is important to note because the cause could be the pinion shaft oil seal. Do not drive your vehicle if it does not have fluid in it as this will cause the differential to fail, and you will no longer be able to operate your vehicle.

Best left to the professionals

Replacing a pinion shaft oil seal is best left to the professionals because of the equipment involved. The mechanics will have to crawl under the vehicle and diagnose any problems with the differential. It is important to have not only the pinion shaft oil seal looked at, but the parts connected to it to ensure they are working properly as well.

If you notice leaking, low differential fluid, or grinding noises while you drive, you may have a leaking pinion oil seal. Book a service online 24/7 to have the seal replaced and to prevent further damage to your vehicle.YourMechanic technicians are available for any questions you may have.


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Rigoberto

9 years of experience
706 reviews
Rigoberto
9 years of experience
Chevrolet Equinox - Brake Pads Replacement (Rear) - Niles, Illinois
Rigo was great! He got there early, finished the job early, left everything clean. He changed my rear pads and rotors. The original quoted time was 90 minutes, he was done in about 60. He knows what he is doing and I am recommending him to all my friends and coworkers.
Mercedes-Benz C250 - Brake Pads Replacement (Front, Rear) - Chicago, Illinois
Rigo is a maverick hands down. Don’t take your car for work elsewhere. Especially great at Mercedes—this guy knows his profession! I will be using him for everything related to my car going forward.

Arturo

25 years of experience
35 reviews
Arturo
25 years of experience
Kia Forte - Brake Pads Replacement (Front) - San Diego, California
ARTURO is great! very professional , fast, replaced my front brake pads and oil an filter change. everything now works and works well. Brakes have much improved stopping power and engine is smooth and quiet.Arturo is also kind and thoughtful. "Your mechanic" is very fortunate to have Arturo Lopez represent your company. I enthusiastically recommend him and "Your mechanic> as a fine operation Best regards to the Team Peter Marto
Nissan Maxima - Brake Pads Replacement (Front, Rear) - San Diego, California
Arturo was prompt and completed my brake repair, including new rotors in a very efficient manner. I am very pleased with the quality of the work and the parts and will definitely look to have him service our other car in the near future.

Scott

32 years of experience
345 reviews
Scott
32 years of experience
Lexus IS250 - Brake Pads Replacement (Rear) - Denver, Colorado
Always on time, speedy, professional, and pleasant to interact with. The work is always consistent and we'll done. I can't reccomend Scott highly enough!

Michael

10 years of experience
15 reviews
Michael
10 years of experience
Nissan Sentra - Brake Pads Replacement (Front) - Conyers, Georgia
He was promptly on time and got the job done efficiently in a timely manner. I really appreciate the rapid respone on getting the job done! I would most definitely use this service again.

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