Question 1

How to replace the crankshaft seal when servicing timing belt for 4-cylinder engines on Volkswagen Jetta?

Accepted Answer

The timing belt engines require service, and to start with, remove timing belt and crankshaft sprocket. Record the depth of the seal in the bore and carefully pick it out with a screwdriver or seal removal tool without making a scratch on the housing or damaging the crankshaft. In case, there is no seal removal tool, the seal can be removed using self-tapping screws. Wipe the bore and apply engine oil or multi purpose grease to the outer edge of the new seal including the lip of the seal. A seal driver should be used or a socket with an insignificantly less outside diameter than that of the seal used so that the new seal can be driven in place with a hammer, taking care to install it in place squarely and to the same depth as the previous one. When required, the front oil seal housing may be removed, taking the location of the fasteners. When the oil pan gasket is damaged, one can cut it completely to the level with the cylinder block and cover it with RTV sealant during the cover installation. Before attaching the oil seal housing gasket, making sure that all mating surfaces are clean is important and then apply a 3/16-inch bead of RTV sealant on the oil pan flange and apply. To avoid dry starts, lubricate the oil seal lip and then fix the front cover. Gradually screw the front oil seal housing bolts to the recommended torque and the crankshaft sprocket and timing belt should be reassembled. Lastly, start the engine and look at the front seal to determine whether it is leaking oil. In the case of timing chain engines, you are to take the crankshaft pulley out and repeat the procedure of changing the seals using the right tools and go around the tensioning pin. Install the crankshaft pulley once again.

Question 2

How to effectively remove and install the timing belt and crankshaft sprocket while ensuring the front crankshaft seal is properly replaced on Volkswagen Passat?

Accepted Answer

The timing belt and sprocket of the crankshaft are removed. Record the depth of the seal sinking in the bore, and then open the front cover, taking care not to scratch the housing bore or the crankshaft itself, since this will cause the new seal to leak. In the case of the lack of a seal removal tool, screw two self-tapping screws into the front seal and use them to loosen it. Wipe the bore in the housing and grease the outer edge of the new seal with engineering oil or multi-purpose grease and grease the seal lip. Install the new seal with a socket of slightly smaller outside diameter to the same depth as the original can be pushed in with a hammer taking care to ensure that the seal is in place and squarely seated; a short length of large diameter pipe also may be employed in case of a lack of a socket. Once installed, look at the seal and make sure that the spring has not sprung out. In case of the need to access other engine parts, loosen the housing mounting bolts and take the housing out of the engine, recording the installed position(s) of the fasteners; one may remove the housing or may not remove the front oil seal, and removing the housing may be simpler than removing the front oil seal. In case the front of the oil pan gasket had been damaged in the process of housing removal, it should be cut off at the front edge of the cylinder block with a razor blade or utility knife because it will be used later to apply RTV sealant when the cover is installed. Be sure the mating surfaces of the cover, cylinder block, and oil pan rail are clean before both cover and oil pan rail are fitted and for this reason, care is taken with the aluminum alloy front cover, cleaning it completely with a hard plastic scraper or a piece of wood. Place a 3/16-inch bead of RTV sealant on the oil pan flange, position the oil seal housing gasket over the dowels on the engine block and apply the oil seal housing, making sure to lubricate the oil seal lip prior to the front cover installation so as not to cause dry starts that can possibly destroy the seal. Installing the crankshaft sprocket and timing belt involves several processes in tightening the front oil seal housing bolts to a given torque. Lastly, start the engine and look at the front seal whether it is leaking with oil or not.

Genuine Volkswagen Crankshaft Seal

16 Crankshaft Seals found

Volkswagen Crank Seal Part Number: 068-103-085-E

Volkswagen Front Crank Seal Part Number: 022-103-085

Volkswagen Rear Main Seal Part Number: 054-115-147-B

Volkswagen Crank Seal Part Number: 07Z-103-051

Volkswagen Rear Main Seal Part Number: 079-103-051-F

Volkswagen Front Crank Seal Part Number: 070-103-051-A

Volkswagen Crank Seal Part Number: 07Z-103-085-A

Volkswagen Rear Main Seal Part Number: 021-103-051-C

Volkswagen Front Crank Seal Part Number: 7B0-103-085-A

Volkswagen Flange Part Number: 077-103-151-J

Volkswagen Front Crank Seal Part Number: 04E-103-085-AM

Volkswagen Rear Main Seal Part Number: 026-103-181-B

Volkswagen Rear Main Seal Part Number: 068-198-171

Volkswagen Crank Seal Part Number: 078-103-151-B

Volkswagen Front Crank Seal Part Number: 7B0-103-085

Volkswagen Seal Ring Part Number: 029-105-245

Volkswagen Crankshaft Seal

Volkswagen Crankshaft Seal Parts and Q&A

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