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Actuator Repair

actuator repair services

Actuator Repair Program

Hydra-Lube Inc. offers a repair program that will allow the customer to track the history and condition of all the actuators on the EHC system. This program will give the customer detailed information of each actuator and help to make decisions in replacing major components during a scheduled outage.

Receiving Actuators:

  • Upon receiving the actuators at Hydra-Lube repair shop, the actuators are inspected from shipping.
  • Once shipping inspection is completed the actuators are stamped the location they were removed from.
  • Actuators are then disassembled and cleaned.
  • All major components are measured and documented. (Rod, piston,barrel ECT.)
  • Once complete inspection is done, pictures are taken and the customer is notified of any major issues.
  • Once approved by costumer the repair proceeds.

Rebuilding Actuators:

  • Actuators are reassembled using Brown Viton seals.
  • All Torque valves are documented.
  • Any components that were replaced are documented and measurements of each component are documented.

Testing Actuators:

  • Once actuator rebuild is complete, testing is done.
  • Leakage rates are measured across piston seals and documented.
  • Actuators are tested 20% above system pressure.
  • Temperature of test fluid is at normal working temperature, 115-125F.
  • Test Fluid is sampled and a ISO 4406 count is documented 14/13/11
  • Actuators are then exercised multiple times to verify operation.
  • Actuator stroke is then measured and documented.

Manifold Inspection:

  • Manifolds are removed from the actuator and disassembled.
  • Once manifolds are disassembled and documented they are cleaned and flushed.
  • Once Manifolds are clean and inspected the sub-assemblies are done.
  • Sub-assemblies (dump valves, servo valves, solenoid valves, check valves and all elastomers are removed.
  • All sub-assemblies are disassembled and inspected.
  • Servo Valves are cleaned and calibrated. They are then plotted to determine proper operation. Servos are tested for leakage anddocumented.
  • Solenoid valves are disassembled and inspected. Solenoid valves arethen cleaned and tested for operation.
  • Dump valves are disassembled and inspected. Pilot sections on dumpvalves are checked for wear on dart and spring. The dump valvespool and body is also inspected for wear and documented.
  • All seals are replaced with brown viton seals.

Final Testing:

  • After the control pack is assembled completely they are then tested as a complete assembly.
  • The control pack is then exercised to verify operation.
  • Test fluid ISO count is documented.
  • Control pack is flushed to assure no contamination exist in the assembles.
  • Fluid used to perform all testing is Fyrquel fluid, unless other is specified.
  • Once testing is complete FME is installed on Control pack and the control pack is then painted with Epoxy paint.
  • Complete control pack is then shipped back to customer.
  • A report is then produced that shows before and after pictures and what was found and what was serviced.