BMW 11142249533 Shaft Seal

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With the engine fully cooled off, remove the viscous clutch cooling fan, engine accessory belts, and crankshaft vibration damper and pulley, ensuring to mark the belts with their direction of rotation. Install the cap using the BMW special tool 11 2 383 on the end of the crankshaft, followed by the seal guide with the BMW special tool 11 2 385, making sure to align the groove with the keyway on the crankshaft. Use the oil seal puller (BMW special tool 11 2 380) by screwing in the body of the puller until it contacts the seal, then tighten the bolt in the center of the tool to draw the seal out of the cover. Coat the new seal with oil and position it in the timing chain cover, utilizing the BMW special tool 11 3 280 and the crankshaft center bolt to draw the seal in flush with the timing case cover. Reinstall the crankshaft vibration damper and pulley, and complete the installation by reversing the removal process, taking care to install the engine accessory belts and the cooling fan.

To replace the crankshaft front oil seal, follow the timing chain cover removal and installation procedure. For the crankshaft rear oil seal, begin by removing the flywheel/driveplate. At the bottom of the oil seal housing, unscrew the bolts securing the rear of the oil pan to the housing, then unscrew the bolts securing the oil seal housing to the engine block. If the housing is stuck to the oil pan gasket, use a sharp, thin blade to separate them without damaging the gasket. Withdraw the housing from the engine block, gently tapping it with a soft-faced mallet if necessary, and remove the gasket. Clean all traces of old gasket and sealant from the mating faces, taking care not to damage the oil pan gasket; if it is damaged, install a new one. Support the oil seal housing on blocks of wood and drive out the seal from the rear using a hammer and drift, then clean the seal mating surfaces. Install the new seal using the seal protector, ensuring not to touch the sealing lip, and drive it into position with a seal driver. Ensure the locating dowels are in place, then position a new oil seal housing gasket over them. Carefully install the housing to the engine block, sliding the oil seal protector over the crankshaft flange, and push the seal and housing into place without damaging the oil seal lips. Reinstall and lightly tighten the housing-to-engine block and oil pan-to-housing bolts, then tighten them to the specified torque. Finally, reinstall the flywheel/driveplate. For camshaft oil seals, note that in a timing chain engine, sealing is provided by the valve cover gasket and timing chain cover gaskets.

First, remove the crankshaft pulley and damper assembly as outlined for lower timing case cover removal.

The rear oil seal becomes accessible once the clutch and flywheel or drive plate for automatic transmission have been removed.

Use the seal removal tool to make firm contact with the seal and tighten the center screw to draw out the seal.

BMW special tool 119 232 is used to attach to the hub and hold the crankshaft seal and installation sleeve.

Before installing the new seal, the seal seating surface should be cleaned, and the crankcase seams should be degreased. A light coat of engine oil should be applied to the seal lip running surface on the crankshaft flange.

Install the seal carrier bolts and torque them to specifications, using new bolts at the base of the seal carrier and coating the threads with sealing compound.

Before installing the new oil seal, you should inspect the outer edge of the seal housing for nicks or sharp edges.

The engine should be fully cooled off.

Install and torque the seal carrier bolts to specifications, using new bolts at the base and coating the threads with sealing compound.

Use BMW special tool 11 2 390 to guide the installation of the seal over the end of the crankshaft, ensuring the seal carrier and support bushing are pressed straight without tilting, and then carefully remove the installation guide.

After starting the engine, you should check that oil pressure is present. If the oil pressure lamp does not extinguish within 5-7 seconds of starting the engine, you should turn the engine off.