Oil Seals

NOTE: Ensure that the seal running track is free from pits, scores, corrosion and general damage prior to installing replacement seal.

1. Always install new oil seals when rebuilding an assembly.
2. Carefully examine seal before installing to ensure that it is clean and undamaged.
3. Coat the sealing lips with clean grease; pack dust excluder seals with grease, and heavily grease duplex seals in cavity between sealing lips.
4. Ensure that seal spring, if provided, is correctly installed.





5. Place lip of seal towards fluid to be sealed and slide into position on shaft, using installing sleeve when possible to protect sealing lip from damage by sharp corners, threads or splines. If installing sleeve is not available, use plastic tube or tape to prevent damage to sealing lip.





6. Grease outside diameter of seal, place square to housing recess and press into position, using great care and if possible a 'bell piece' to ensure that seal is not tilted. (In some cases it may be preferable to install seal to housing before installing to shaft). Never let weight of unsupported shaft rest in seal.
7. If correct service tool is not available, use a suitable drift approximately 0.4 mm (0.015 inch) smaller than outside diameter of seal. Use a hammer VERY GENTLY on drift if a press is not suitable.
8. Press or drift seal in to depth of housing if housing is shouldered, or flush with face of housing where no shoulder is provided. Ensure that the seal does not enter the housing in a tilted position.

NOTE: Most cases of failure or leakage of oil seals are due to careless installing, and resulting damage to both seals and sealing surfaces. Care in installing is essential if good results are to be obtained. NEVER use a seal which has been improperly stored or handled, such as hung on a hook or nail.