Start by removing the crankshaft vibration damper so that you can replace the front oil seal. You should also remove the
Flywheel/driveplate, then take out the crankshaft position sensor (CKP) and magnet wheel in order to install a new rear oil seal on your vehicle's engine. While the flywheel is removed is a perfect moment to inspect the clutch in manual transmission cars. You may use any flat-bladed screwdriver or similar tool to carefully pry off the oil seal from cylinder black. It is vital not to affect sealing face of either crankshaft or block of cylinders while trying that. Alternatively, two small holes could be drilled into the hard outer face of seal opposite each other and two self-tapping screws inserted, after which pliers will be used to withdraw it. After thoroughly cleaning up surfaces for sealing around crankshaft and on cylinder block apply a little fresh engine oil present on sealing surface of shaft itself. Drive it into place as squarely as possible using an appropriate socket, suitable piece of pipe or seal driver whose diameter equals that of outer edge of such until its exterior becomes flush with inside one. Fasten down either vibration damper or flywheel/driveplate plus CKP which are all parts making up this system with that one mentioned before.