b'Safety Steering ColumnsSCA880 TWO-PIECEJOINTEDSAFETYCOLUMNforinstallationanywhereanSCAone-piecetypewillnotfit.Hasfullneedlebearingsupport.Requiresfabricatedsandwich-stylemountfittedtothemountingholes(seeorderinginstructions).SuppliedstandardwithQRA697-2SCA880.1125.75How to fit and order an SCA880 safety columnUpper(fixed)column:1. Establishalocationfortheupperuniversaljoint.2. Havethedriversitinthecar,holdingthewheelindrivingposition.3. MeasurefromthebackormountingsurfaceofthewheeltothecenteroftheU-joint.ThisvalueislengthAoftheupper(fixed)column.Thisdimensionisusedtocreatethepartnumber(e.g.SCA880-1875for18.75inches).Lower(collapsible)column:3. DeterminethecenterdistancefromtheupperU-jointtothelowerU-joint.ThisdistanceislengthBofthelower(col-lapsible)column.Thisdimensionisusedinthepartnumber(e.g.SCA580-2350for23.50inches).For universal joint dimensions, refer to the drawing at right. Note that the set screws engage a locking groove on the splined shaft. The screws are located 3/8 from the end of the joint and 1/2 from the end of ANY Woodward splined shaft. An equivalent feature is found on most OEM input shafts, usually a half-round slot or groove that the screws can lock into (if that feature is lacking, make a suitable groove in the shaft; never tighten set screws directly against spline teeth).208'