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  • 7. Reassemble the engine, making sure to torque the cylinder head bolts to the correct specifications.
  • In conclusion, the front hub oil seal plays a crucial role in the proper functioning of a vehicle's suspension system. Regular inspection and maintenance of the seal are essential to prevent oil leaks and potential damage to the wheel bearings. If you notice any issues with your front hub oil seal, it is important to address them promptly to avoid further damage and ensure the safety of your vehicle.
  • Purpose of an Oil Seal

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  • Resistant to various chemicals such as transmission fluid, petroleum oils, and gasoline 
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  • As shown in Figure 1, sealing devices come in two types: contact and non-contact.
    Oil seals are among the major contact type sealing devices.

  • The edge of the metal is finely ground after seal manufacture in a centerless grinder to enable an interference fit in the oil seal housing. A slight chamfer on the outer diameter (OD) of the seal is desirable for easy assembly. The sealing lip is prepared by buffing, grinding or cutting away the rubber flash which occurs at the sealing edge. A fine sealing edge creates sufficient pressure on the shaft to minimise spring load, leading to lower friction whilst maintaining effective seal performance. The garter spring plays an important role in the efficiency of the oil seal. If its tension is too high, heat will be generated between the sealing lip and the shaft, and result in rapid wear of the lip. If too low, the spring will be ineffective and the sealing lip will be worn away leading to leakage of the fluid.