CHAPTER 3 REPAIR PROCEDURES3.2.4. Load Cell AssemblyThe first several steps of Load Cell assembly are critical. Check at each step that parts arecorrectly aligned in order to ensure the balance will function properly.1. Set the Ratio Beam assembly in place and loosely install the 2 screws on left andright sides of the yoke. Check that both front sides of the yoke align with the frameof the Load Cell. If they do not, Ratio Beam Flexures may need to be replaced, asexplained next page in Section 3.2.5.1: Ratio Beam Flexure Replacement.Align each front sideof Ratio Beam yokewith Load Cell frame.Screw on sideof yokeScrew on sideof yokeRatio BeamFlexureRatio BeamFlexureFigure 3-63. Yoke of Ratio Beam mustalign with frame of Load Cell.2. Insert Brass Rod on back side under the Ratio Beam. Be sure Threaded Rod is onfront. See Figures 3-45, 3-46, and 3-47, page 3-26.Magnet TemperatureSensor TubeBrass RodGap between Coiland MagnetCoil insideMagnetFigure 3-64. Installing Ratio Beam with holecentered over the Temperature Sensor Tube.3. Ensure that the hole in the Ratio Beam is centered over the Temperature SensorTube, and that the gap between the Coil and the Magnet is even. Move the RatioBeam assembly only by the yoke, until it is perfectly centered.Discovery Balance Service Manual 3-31 Ohaus Corporation www.ohaus.com
