First, it could be the malfunction of the crankshaft. How to replace a rear main seal without removing the transmission (Source: Chevy HHR Network) What Makes a Rear Main Seal to Be Ruined?īesides the rear main seal lifespan itself, there are some other factors that cause the rear main seal to go out. Then the oil will dry up and stay there will stains, destroy the system. If the rear main seal is malfunctioned, the oil will leak fast. Therefore, the crankshaft can finish its work and let the engine coordinate well. It prevents the oil from leaking into the crankshaft. Just like its name, the rear main seal is installed at the rear of your car’s engine. If you want to know how to replace rear main seal, you will need to know what it actually is. But you may ask how to replace a rear main seal without removing the transmission? In this post we will show you how to replace rear main seal without removing engine. Usually, you will need to remove the transmission to do this process. When it comes to rear main seal replacement, it takes a lot of time. The rear main seal can last for a long time, maybe for the rest of your car’s lifespan. Its main function in your car is to prevent the oil from leaking between the block and the crankshaft. A rear main seal is an important part of the engine system.
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