Reconditioning of MOOG main stage & servo valve

Product information "Reconditioning of MOOG main stage & servo valve"

The valves received for repair are subjected to an initial inspection to determine the extent of repair required.

Incoming inspection 

MOOG-HYDROLUX main stage
  • condition of the piston (piston friction)
  • electronics output
  • position of the displacement transducer
  • electronics with displacement transducer
  • O-rings and seal rings
MOOG pilot stage
  • condition of the filters
  • beam splitter
  • oil quality
  • clearance between piston and bushings
  • electronics with displacement transducer
  • O-rings
  • control behaviour in the small-signal range
  • zero setting
  • condition of the nozzles
isolation valve
  • O-ring

After approval of the repair order, the required services are carried out and documented. Finally, a functional test is carried out with diagram creation and evaluation.