Rice Lake Lift Truck/Pallet Jack Scales - CLS-Series - Manual (Page 15)

Load Cell Replacement 11
Figure 2-15. Tightening the Lower Hex Nut
28. Use the special modified box wrench to tighten the jam nut (#13) on the lower block.
29. Remove the flat bladed screwdriver as used in Step 25 and inspect the flexure rod. The flexure rod needs
to be in the center of the hole. If it is not, use a hammer and an angled diamond chisel to hit the bottom
mounting plate spherical washer set to adjust it to center.
30. Install the spherical washer set (#3) and hex nut (#2) on the top of the upper block.
31. Wire up the load cell cable to the junction box at this time.
32. Make sure that ZTRKBN is set to Off on the indicator.
33. Torque the hex nut (#2) on the upper mounting block until you see 100 lb on the indicator display.
Tighten the lower hex nut (#6) below the upper mounting block using the modified box wrench and try
to get the display as close to zero as possible.
34. Torque the top hex nut (#1) with a torque wrench to 110 ft/lbs. Use a pry bar or chisel to ensure the load
cell stays centered while tightening and doesn’t touch the sides of front or back plate
35. Install the final hex nut on the top mounting plate and torque to 110 ft/lbs. Use a pry bar or chisel to keep
the load cell centered.
36. Tighten the jam nut on the lower mounting block assembly.
37. Zero out the indicator display.
38. Exercise the scale heel to toe by placing a weight (1000 lbs) on the heel then the toe to check if the
assembly was installed correctly. Do this for both sides. If the weight is off, check assemblies.
39. Place a weight in the center of the fork and check side to side values. If they are equal, you are done.
40. Tighten the overload stops when complete.
41. Make sure to turn ZTRKBN to On on the indicator.