© 2015 General Electric Company. All right s reserved. Masoneilan 37-38 Series Actuators Instruction Manual | 7Parts ReferenceRef.No. Part Name ComputerAbbrev.Ref.No. Part Name ComputerAbbrev.Ref.No. Part Name ComputerAbbrev.**151718** 1920212222A263031Gasket (packing box)YokeCap Screw (L case to yoke)Gasket (L case to yoke)Packing NutSnap RingActuator SpringActuator SpringActuator StemNut (actuator stem)Packing BoxGASKETYOKECAP SCRGASKETPKG NUTSNP RNGACT SPRACT SPRACT STMNUTPKG BOX**323334353637**3940414344PackingSpring Seat (upper)Spring Seat (lower)Pipe PlugSpring AdjustorBushing (spring adjuster)DiaphragmDiaphragm PlateDiaphragm WasherUpper Diaphragm CaseLower Diaphragm CasePACKINGUSPR STLSPR STPIP PLGSPR ADJBUSHINGDIAPHRMDPH PLTPDH WSHU D CSEL D CSE454656577071727374Cap Screw (diaph. case)Nut (diaph. case)Travel Indicator ScaleMachine ScrewBall and RetainerSpring BarrelSpring Barrel CapBall Bearing RaceCap Screw (SBL to U D CSE)CAP SCRNUTT I SCL MCNSCR BALL &RTN SPRBRLSBL CAPBBG RCECAP SCR**Recommended spare parts