If the machine is not level within ±5 mm, this could cause the belt to cant to the front or rear and negate these adjustment procedures..

  1. Re-install the ITB. (Field Service Manual > ITB Unit > Belt Replacement > Belt Re-installation)
  2. Open SP2-310-002 (Force Apply Lubricant Operation Time Setting), and then change the setting from 300 to 100 sec.

  3. Open SP2-920-013 (Steering Control Roller Timeout of Belt Ready), and then change the setting from 400 to 105 sec.

    • The timing settings for these SP codes must be shortened from their normal operation settings in order to allow diligent operation checks.
    • Reducing SP2-310-002 to 100 sec. allows the machine to apply lubricant at 100 sec. intervals, confirm that the position of the belt is stable, and then adjust the belt to the positions of the left and right scale plates.
    • Depending on the conditions of the machine, after application of the lubricant ends the belt may not be adjusted to its correct position within the target range within 100 sec. This can occur if the belt has been re-installed out of position. In this case after the SP executes lubricant application for 10 sec. and stops, the machine is not able to do the correction quickly enough, so beforehand the belt ready SP2-920-013 timeout setting is set to 105 sec. If the machine cannot correct the belt position within 105 sec. the machine issues SC471-01 (Belt Position Ready Timeout), and SP2-310-002 (applying the lubricant) stops, and then starts the process again after the belt has been steered to the correct position.

  4. Set the following steering control SP codes to “0”.
    • SP 2-920-002 (Steering Control Roller Stable Position of Steering Roller)
    • SP 2-920-004 (Steering Control Roller Last Time Ai Value)
  5. SP 2-310-001 (Force Apply Lubricant Belt Cleaning) – 1st Execution
    • SP2-310-001 executes (100 sec.) After the SP executes, check the value of SP2-920-002 (Steering Control Roller Stable Position of Steering Roller).
    • If the value is -20 ≤ SP Value ≤ +20, do the next 2nd SP execution. At this time the SP value in Step 4 is not set to “0”.
    • If the SP value is <-20 or >+20, then the “Steering Plate Adjustment” described below is required. After this adjustment, set the value for the Step 4 SP to “0”, and then do the 2nd SP execution.
  6. Do SP2-310-001 – 2nd Execution
    • Do SP2-310-001 (100 sec.). After this SP executes, check the value of SP2-920-002 (Steering Control Roller Stable Position of Steering Roller)
    • If the value is -20 ≤ SP Value ≤ +20, do the next 3rd SP execution. At this time the SP value in Step 4 is not set to “0”.
    • If the SP value is <-20 or >+20, then the “Steering Plate Adjustment” described below is required. After this adjustment, set the value for the Step 4 SP to “0”, and then do the 3rd SP execution.
  7. Do SP2-310-001 – 3rd Execution
    • Do SP2-310-001 (100 sec.). After this SP executes, check the value of SP2-920-002 (Steering Control Roller Stable Position of Steering Roller)
    • If the value is -20 ≤ SP Value ≤ +20, do the next 4th SP execution. At this time the SP value in Step 4 is not set to “0”.
    • If the SP value is <-20 or >+20, then the “Steering Plate Adjustment” described below is required. After this adjustment, set the value for the Step 4 SP to “0”, and then do the 4th SP execution.
  8. Do SP2-310-001 – 4th Execution
    • Do SP2-310-001 (100 sec.). After this SP executes, record the value of SP2-920-002 (Steering Control Roller Stable Position of Steering Roller)
  9. After doing the 4th execution of SP2-310-001, do one of the following, using the value of the setting for SP2-920-002 (Steering Control Roller Stable Position of Steering Roller).
    • If SP value <-20 or +20<SP value: Check the ITB unit, and then reset the ITB belt unit, and then repeat lubricant application in Step 4.
    • If -20 ≤ SP Value ≤ +20: Reset the following SP codes to their default settings:
      For SP2-310-002 change the "100" setting to "300" to restore the default.
      For SP2-920-013 change the "105" setting to "400" to restore the default.
    • Next, do Steps 10 and 11. If you did not do the adjustment for the right control plate, skip Steps 10 and 11, and then go to Step 12.
  10. Open the controller box. (Field Service Manual > Replacement and Adjustment > Common Procedures > Controller Box, Controller Box Cover > Opening the Controller Box)
  11. Loosen the three screws of the ITB/PTR motor bracket, and then tighten them.


  • This step is required the correct the positions of these screws [A] and [B] because adjustment of the right steering plate can cause these screws to slip out of position between the ITB unit and the ITB/PTR motor.

  • Recommended torque for screw [A]: 0.9±0.1Nm
  • Recommended torque for screws[B: 0.7±0.1Nm
  • Screws [B] are made of resin-based material, so do not apply to much force when loosening and tightening them.

12.Do these procedures, and check the re-installation. This completes the procedure.

    • Close the controller box.
    • Re-install the drum cleaning unit.
    • Raise the ITB lever so that the ITB is in contact with the drum.
    • Re-install the PTR unit.
    • Raise the levers on the front of the ITB cleaning unit so that the blades are up in the operating position.