Metal motorcycle oil seals.Failure to check the position of the seal on the shaft, to ensure that the seal faces are loaded correctly, will cause seal leakage.
The specifications for shaft radial runout and axial movement should be obtained from the compressor service manual before installing a shaft seal. The shaft radial runout should be checked with a dial indicator to ensure the
total indicator reading does not exceed the OEM specification. Also, the axial movement should not exceed the OEM specification.Metal motorcycle oil seals
Seal housings must be concentric and perpendicular to the rotating member. The compressor bearings should be checked or adjusted, if possible, because the seal will leak if the above mentioned tolerances are not met.
The seal must be filled with cool, clean and filtered lubricant for proper performance.Metal motorcycle oil seals
The rotating member of the shaft seal is in constant axial motion varying from .001 to .002 inch. This movement can be induced by normal runout, vibration, cavitation, coupling misalignment and bearing tolerances.
The seal uses springs and elastomers to compensate for the axial movement. If this compensation stops for any reason, solid contaminates can become trapped between the seal faces.Metal motorcycle oil seals
The trapped contamination will imbed in the soft face causing it to act as a grinding wheel and destroy the hard face. Also, contamination in the seal area can clog springs and bellows and may erode the sliding components of the mechanical seal.
The seal will not require any special consideration if the fluid is free of contamination and relatively cool. However, some fluids under varying conditions can cause damage to a seal.Metal motorcycle oil seals
The fluid should be analyzed if installation errors are eliminated as the source of seal leakage. A visual inspection is not enough because even new oil can be very dirty.
Subtle problems in this area can easily be overlooked or taken for granted which will result in a leaky seal.Metal motorcycle oil seals
No comments:
Post a Comment