Wiring and Electronics

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This is not an adjustment that should be performed often. Once every 500 hours of operation is recommended or if the backlash adjustments do not eliminate the backlash.

  1. To determine if this adjustment is needed, place the stylus of an indicator on the end of nut No. 11, place a rod in one of the T-slots, and push and pull the rod moving the table clockwise and counter- clockwise, and also forcing the wormshaft in and out. There should be no more than .0005” end play in the wormshaft assembly. If the end play of wormshaft No. 3 exceeds .0005”, then continue. (Be sure that the movement is not due to movement in bracket cartridge No. 5. Tighten socket set screw No. 64).
  2. Remove (3) button head screws No. 70 from pulley cover No. 9.
  3. Remove Pulley cover No. 9.
  4. Loosen (2) socket set screws No. 65 in nut No. 11.
  5. Snug up not No. 11 by turning it slightly clockwise for take up. Prevent wormshaft No. 3 from rotating while adjusting nut No. 11 by placing a rod in the hole in the O.D. of pulley bushing No. 43.
  6. Securely tighten (2) socket set screws No. 65 in nut No. 11.
  7. Recheck the end play per the above instructions step 1.
  8. Replace pulley cover No. 9 and button head screws No. 70.
NOTE: Due to condensation in the air, the pulleys may be rusty. If excessive rust is present, the pulleys can be removed and sandblasted, cleaned or replaced. The pulleys have been electroless nickel plated to help prevent this problem. Be sure to drain and vent hole in pulley cover No. 9.