BMW 11117587168 Shaft Seal

Raise the vehicle and support it safely, then remove the splash shield underneath the engine and the engine accessory belt, followed by the vibration damper (front pulley). It is important not to loosen or remove the vibration damper hub bolt, as doing so may allow the timing chain drive sprocket to rotate freely, potentially causing valve damage. Next, screw the BMW special tool 11 O 371 into the crankshaft seal with approximately 50 Nm (37 ft-lb) of torque and rotate the tool clockwise to pull out the seal, repeating the process if necessary. Carefully saw the seal at the dashed line and peel it off. Using special tool 2 212 822, attach the supporting sleeve and position the crankshaft seal onto it, noting that a plastic supporting sleeve is supplied with the seal. With the supporting sleeve as a guide, slide the crankshaft seal onto the special tool and remove the supporting sleeve. Finally, install the crankshaft seal with BMW special tool 119231 in conjunction with special tool 11 9 233 until it is flush with the crankcase, then reinstall the crankshaft vibration damper, completing the assembly in reverse order of disassembly.