Rear Axle CV Pilot Seal Replacement at your home or office.

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Rear Axle CV Pilot Seal Replacement Service

What is the Rear Axle CV Pilot Seal all about?

In a rear-wheel drive vehicle, motive power from the transmission needs to be transferred to the wheels. It’s a bit more complicated than in a front-wheel drive setup, where CV axles connect the wheels to the transmission itself. In this situation, a drive shaft is connected to the transmission and the rear differential. It rotates with the transmission, and then turns the gears inside the differential. Rear CV axles connect from the differential to each rear wheel, allowing them to turn and move the vehicle.

Because the differential is subject to heat and friction damage to gears, fluid must be used to lubricate the moving parts. The axles have to fit into the differential, so there must be a way to allow this to happen without letting the fluid leak out. That job is handled by the rear axle CV pilot seal, and there is one on each side of the differential (one for each axle).

Over time and through normal wear and tear, these seals can begin to leak. Minor seeps are generally not a problem as long as you keep an eye on the fluid level inside the differential, but if it develops into a more serious leak, fluid loss and then differential damage can result.

Keep in mind:

  • It can be difficult to notice a leak from a rear axle CV pilot seal.
  • Seals should be inspected during basic maintenance (oil changes, for instance).
  • Replacing these seals requires considerable teardown.
  • Even minor seal leaks can develop into major problems in a short time.

Our recommendation:

If your rear axle CV pilot seal is leaking, it’s only a matter of time before the leak becomes problematic. Loss of fluid in the differential can cause major damage, and can make your vehicle unusable. We recommend having the problem diagnosed and repaired by one of our expert mechanics as quickly as possible if you notice any signs of fluid leaks.

What common symptoms indicate you may need to replace the Rear Axle CV Pilot Seal?

  • Moisture on the differential around or under where the axle meets
  • Drips of fluid on the ground under your rear differential

How important is this service?

Maintaining rear axle CV pilot seals is critical to the health and operation of your differential. As the fluid level drops, so does the lubrication for the gears inside the differential. This results in increased heat and friction, which can destroy those gears. When that happens, your vehicle is immobile. We recommend having the problem immediately diagnosed and repaired by a professional mechanic.

Fast and easy Rear Axle CV Pilot Seal Replacement service at your home or office.


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