Genuine Audi A3 Crankshaft Seal

Audi A3 Crankshaft Seal Parts and Q&A

• Timing Cover Seal
  06L-103-085-B
  Q: How to replace the Camshaft Seal and Crankshaft Seal at the timing belt end for 2.0 litre DOHC petrol engines on Audi A3?

  A:

  To replace the timing belt end oil seal, first remove the timing belt and crankshaft sprocket. The seal can be renewed without removing the housing by drilling two small holes diagonally opposite each other, inserting self-tapping screws, and pulling on the heads with pliers. Alternatively, if applicable, remove the auxiliary belt idler pulley, unbolt and remove the housing along with the relevant sump bolts, then lever out the oil seal on a bench. If the seal housing remains in place, position the new seal over the crankshaft end with the closed side facing outwards, easing the seal lip over the shoulder to avoid damage, and drive it into place using a suitable tubular spacer until flush with the housing. If the housing has been removed, clean all sealant from the mating faces, drive the new seal into place, and apply a thin bead of suitable sealant to the housing mating faces, ensuring it is routed inside the bolt holes. Refit the housing, easing the seal over the crankshaft end, and tighten the bolts to the specified torque, ensuring the housing is secured within 5 minutes of applying the sealant. Finally, refit the timing belt and crankshaft sprocket. For the flywheel/driveplate end oil seal, remove the flywheel/driveplate and, if necessary, the sump, which may require renewing the sump-to-block intermediate plate on some models. Pull the adapter plate from the locating dowels and unbolt the housing, which is only available complete with the seal. Carefully clean any sealant residue from the mating surfaces, apply sealant where applicable, and position the new housing and seal over the crankshaft, tightening the bolts in a diagonal sequence to the specified torque. Refit the adapter plate over the oil seal housing and, if applicable, the sump, followed by the flywheel/driveplate.
• Front Crank Seal
  038-103-085-E
  Q: How to remove and fit Crankshaft Seal PTFE oil seals for Diesel engines on Audi A3?

  A:

  The oil seals are of the PTFE type and are fitted dry, without grease or oil, featuring a wider sealing lip and replacing the coil spring type. If the oil seal housing is removed, a suitable sealant will be required for resealing. To remove the Timing Belt end oil seal, first take off the timing belt and crankshaft sprocket. The seal can be extracted without removing the housing by drilling two small holes diagonally, inserting self-tapping screws, and pulling with pliers. Alternatively, to remove the oil seal with its housing, the sump must be removed first to ensure a proper seal upon refitting. After unbolting the oil seal housing, the seal can be levered out carefully to avoid damaging the seating. The oil seal seating should be thoroughly cleaned, and a protective tape should be wound around the crankshaft end before fitting a new oil seal into the housing, ensuring it is pressed in correctly with the closed end facing outwards. If the housing was removed, all old sealant must be cleaned off, and a new bead of sealant applied to the mating faces, ensuring the housing is refitted within 5 minutes. Excessive sealant should be avoided to prevent blockage of the oil pick-up pipe. The oil seal housing should be refitted and tightened progressively to the specified torque, followed by the sump, crankshaft sprocket, and timing belt. For the flywheel/driveplate end oil seal, the flywheel/driveplate and sump must be removed first, followed by the unbolting of the oil seal housing with the oil seal. New oil seal/housing assemblies come ready-fitted with a tool to prevent damage during installation. If sealant was used originally, a thin bead should be applied to the mating face before carefully fitting the assembly over the crankshaft and securing it with bolts tightened in a diagonal sequence. Finally, the oil seal protector tool should be removed, and the sump and flywheel/driveplate refitted.