Is the rear main seal connected to the transmission?
The rear main seal keeps oil sealed inside the rear of the engine, where the crankshaft connects with the transmission. It can be expensive to repair, often $600 or more, because it typically involves removing the transmission and, in some cases, all or part of the engine.
Does a rear main seal leak oil or transmission fluid?
The rear main seal prevents oil from leaking past the spinning crankshaft flange. This leak is a common problem as an engine wears. If either of these seals is leaking, the engine and the transmission must be separated, and a new seal installed to repair this leak.
Can transmission fluid leak from rear main seal?
Seals and Other Gaskets
There are various seals and gaskets throughout the transmission system. This might include the rear main engine seal and the front input seal. The rubber may deteriorate or something could come out of alignment and cause a transmission fluid leak.
Can you replace a rear main seal without removing the transmission?
It is certainly possible to replace your rear main seal yourself, without removing the transmission, if you have some knowledge of cars, understand your engine, and have the tools. It is usually professional to perform this type of procedure.
Is rear main seal and crankshaft seal the same?
There are two crankshaft seals, one in the front and one in the back, which are known as the front main and rear main seals respectively. Since the crankshaft needs to be lubricated, there are seals on both ends of the crankshaft that keep the oil from escaping.
What happens if rear main seal is leaking?
If the seal tears or cracks at all your crankshaft rotation can cause the seal to get torn up very quickly causing a very fast leak. A fast leak can lower your engine oil level to dangerous levels very quickly and dangerously low oil levels can lead to permanent engine damage.
How much does it cost to fix a rear main seal?
Even though the parts won’t cost more than $100, the cost of labor is what makes the rear main seal repair very expensive. Mechanics will charge between $500 and $1800 for the labor alone, with the average total cost of repair being $1100.
How long does a rear main seal last?
How Long Do Seals And Gaskets Last? Usually rubber gasketes can last between 3-5 years, depending on the type they are. By protecting your rubber gasket from the sun, you can ensure a longer lifespan. As rubber is exposed to a high temperature for extended periods of time, it may be cracked and broke.
What causes a rear main seal to fail?
It is also crucial to check your oil and change it as needed, as low oil levels can cause issues with the rear main seal. Excessive heat, old age, high mileage, infrequent use, and worn bearings can also be factors contributing to rear main seal failure.
How many hours does it take to replace a rear main seal?
Replacing a Rear Main Seal
However, the process to get to the rear main seal to replace it often requires removal of the entire engine and transmission from the vehicle, a job that can only be done by very skilled mechanics and even then can take 6-10 hours!