Not all vane pump repairs are created equal. We consistently see vane pump failures returned from other repair companies due to inferior parts being used, as well as a lack of proper testing procedures.
Paragon repair technicians are certified and professionally trained to use only OEM specifications, or better. Our extreme stress testing of these units to 100% rated load and pressures fails all but the best performing pumps. Only then can a pump leave our facility as a Paragon Pump.
Repair Procedures:
- Each vane slot is inspected to ensure vanes will be stable and free moving in the slot.
- Every vane set is checked with a micrometer for proper thickness.
- Each set is refinished and inspected as a matched set. These tolerances are as tight as 0.0003 inches!
- Vane tip surfaces are restored to original condition in order to provide a proper vane tip-to-ring contact.
- 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.
- The inside contour of the ring is brought to within 16 RMS finish.
- Every plate is precision lapped with a production machining line that uses different grits of lapping compound to remove imperfections. This process leaves every plate within 12 millionths of an inch of flatness.
- All depth of metering, timing notches and lubrication grooves are checked and recut to tolerance.
- Every plate is surface treated to allow the microscopic film of oil that must be present between the plate and the rotor.
- All units are 100% load tested on specific test stands up to 5000 PSI
Brands We Repair:
- Bosch
- Parker
- Nachi
- Denison
- Moog
- Racine
- Rexroth
- Vickers
