Replacing the crankshaft rear oil seal on an LS-type engine isn't overly difficult. In fact, it takes only minutes to complete. Nevertheless, getting to it requires removing the transmission, ...

Main Crankshaft Seal Replacement - Tricks Of The Trade. ... the rear main crank seal can become dry and crack or tear, and if left unattended, it will leak oil and eventually foul the clutch.

To learn how, follow along as Dunks Performance (in Springfield, Oregon) techs replace the RMS on a customer’s 2006 LJ. The 4.0L had just turned 57,000 miles and it had been seeping oil for six ...

How to replace your transfer box rear oil seal Oil dripping from the transmission brake can be a simple fix, so don’t delay fitting a new seal.

Rear Main Seal. 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 ...