CHAPTER 3 MAINTENANCE PROCEDURESPioneer Balances Service Manual 3-23 Ohaus Corporation www.ohaus.com3.3.16 Disassembling Analytical Load Cells3. To protect the Flexures, secure the Hanger to the Load Cell with two screws and theshims supplied with the Service Fixture. Use two screws that were removed from theBottom Mounting Plate earlier. Insert them finger-tight in the holes of the Hanger.(See Figure 3-58.)4. Insert the shims (from the Service Kit) between the Hanger and the Load Cell on theright and left of the Hanger. (See Figure 3-59.) Keep the screws finger-tight whileinserting the shims, to avoid risk of damaging the Flexures.Figure 3-58. Screws removed fromBottom Mounting Plate insertedfinger-tight into the Hanger. Figure 3-59. Shims are inserted betweenthe Hanger and the Load Cell on the leftand right of the Hanger.5. Tighten the two screws thatstabilize the Hanger.6. Remove the two screws andwashers that secure the TopBracket, and lift it off.(See Figure 3-60.)NOTE:Do not touch the two rear-most screwswith nuts on top. These are adjustmentscrews.Figure 3-60. Analytical balance Load Cellwith Top Bracket visible.7. Remove the Vertical Flexure, which is located in the center of the Hanger. Loosenthe two screws that secure the Vertical Flexure to the Hanger. Carefully remove theLock Plate, washers and bushings, keeping track of their order (for later reassembly),as illustrated in Figure 3-61.Note: Be sure to lay the Flexure on a flat surface, to avoid bending it.Screwsinserted in Hanger to secure itLock Plate protectingVertical Flexure ShimsAdjustment screws(Don’t touch.)Top Bracket
