Rubber motorcycle oil seals.Excessive movement in the shaft, especially in belt driven units, is a warning that more serious damage may be occurring inside the airend. It is always better to discover this before it is too late.
Installation Tips, Mechanical Seals
The seal manufactures instructions should be followed when replacing a mechanical seal. Make sure you lube up the inside of the rubber boot before assembly.Rubber motorcycle oil seals.
Some seal manufacturers recommend using petroleum jelly while others suggest using the compressor oil or light mineral oil. The lubricant allows the rubber sealing boot to slide on the shaft during assembly and bond to the shaft shortly afterward.
A final note about mechanical seals. When replacing the seal housing, always make sure the housing and gasket line up properly with the scavenge line porting on the airend.Rubber motorcycle oil seals.
Installation Tips, Teflon (trademark) Lip Seals.It is recommended that the seal sleeve be replaced every time the Teflon (trademark) seal is replaced. Also, the sleeve may have an o-ring behind it which must be replaced.Rubber motorcycle oil seals.
A Loctite (trademark) sealant should be used to seal the sleeve to the shaft because, pressured and heated oil can weep under the sleeve even if the Teflon seal has seated perfectly.Rubber motorcycle oil seals.
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