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Hydraulic Vane Pump Remanufacturing
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Each slot is checked so that the vanes will be stable in the slot
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Every vane set is checked with a micrometer for proper thickness |
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Each set is refinished and checked as a set to ensure that they are all the same length
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Vane tip surfaces are restored to condition in order to provide a proper vane tip-to-ring pattern |
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Every cam ring inside contour is refinished using a series of polishing wheels that follow the contour to smooth out slight irregularities on the surface without changing the slope and dwell angles |
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The inside contour of the ring is brought to within 16 RMS finish |
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Every plate is lapped with a production machining line that uses different grits of lapping compound to remove imperfections |
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This also leaves every plate within 12 millionths of an inch of flatness |
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All depth of metering, timing notches and lubrication grooves are checked and recut to tolerance |
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Every plate is surface treated to allow the microscopic film of oil that must be present between the plate and the rotor |
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This ensures that the pump performance will be equal to new |
