Adjust PTO and Drive Roll Slip Clutch Alert Sensors (MegaWide™ Plus Pickup)

  1. The following procedure is not used on a 450M and 550M Baler with a Regular pickup.

    E83338
    E83338-UN-06JUN17

    PTO Sensor (540 rpm) Shown

    E83339
    E83339-UN-06JUN17

    A - PTO Sensor

    B - PTO Clutch Bolts

    Clearance between sensor (A) and clutch bolts (B) must be within specification. A feeler gauge or washer of the same thickness can be useful in adjusting setting.


  2. E83340
    E83340-UN-06JUN17

    Lower Drive Roll Sprocket (Pickup) Shown

    E83341
    E83341-UN-06JUN17

    A - Sensor

    B - Lower Roll Drive Sprocket

    C - Carriage Bolt and Nut (3 each used)

    Clearance between sensor (A) and sprocket (B) must be within specification. Adjust the face of the sensor to the sprocket distance by loosening the three carriage bolts (C) in the slotted holes.
SensorClearance3—8 mm (0.118—0.315 in)


Verify Operation of Sensors

E83401
E83401-UN-06JUN17

PTO Sensor (540 rpm) Shown

E83402
E83402-UN-06JUN17

Lower Drive Roll Sensor (Pickup) Shown

A - Sensor

Use a speed readout to verify operation and adjustment of sensors (A). Access channel 016 on monitor-controller for PTO speed and channel 017 for lower drive roll speed.

  1. Start tractor and operate tractor engine at a low idle. Engage PTO.

  2. Press and hold COUNTER key while turning monitor-controller ON.

  3. Continue to hold COUNTER key and press PLUS key until CH016 appears in digital display.

  4. Release COUNTER key and PTO speed are displayed. Speed readout must be stable and not vary by ± 5 rpm.

  5. Press and hold COUNTER key and press PLUS key until CH017 appears in digital display.

  6. Release COUNTER key and pickup drive speed are displayed. Speed must be stable and not vary by ± 5 rpm.

  7. If speed variation exceeds ± 5 rpm, shut off tractor and remove key.

When the tractor is operated at rated PTO speed, channel 016 must display 540 rpm for a 540 PTO option or 1000 rpm for a 1000 PTO option. Channel 017 must display approximately 310 rpm for non-precutter machines and 170 rpm for precutter machines. Slip clutch alert system must be activated within the monitor-controller for proper operation. (See Net Wrap, Slip Clutch Alert, and Variable Core Features [Turn On and Off] in this section.)

Turning PTO Speed Sensor ON and OFF:

  • PTO speed sensor can be turned OFF or ON by accessing channel 204.
  • Feature can be turned ON by changing value to 540 rpm for a 540 PTO option and 1000 rpm for a 1000 PTO option machine.
  • Entire slip clutch alert feature can be turned OFF by changing value to 0.

Turning Lower Drive Roll Speed Sensor ON and OFF:

  • Pickup rpm sensor can be turned OFF and ON by accessing channel 205.
  • Feature can be turned ON by changing value to 310 rpm for a non-precutter machine and 170 rpm for a precutter machine.
  • Pickup rpm sensor can be turned OFF by changing value to 0.
  • Turning OFF pickup sensor on channel 205 and turning ON PTO sensor on channel 204 still allows automatic speed compensation during the net or twine application cycle.

Adjusting PTO Sensor

E83403
E83403-UN-06JUN17

A - Sensor

B - Clutch Bolt

C - Bracket

Adjust the face of the sensor (A) to the clutch bolt (B) distance specified by bending the bracket (C) accordingly.


Adjusting Lower Drive (Pickup) Roll Sensor

E83404
E83404-UN-06JUN17

A - Lower Drive Roll Sensor

B - Sprocket

C - Carriage Bolt and Nut (3 each used)

Adjust the face of the sensor (A) to the sprocket (B) distance by loosening the three carriage bolts (C) in the slotted holes.

SF04007,0000E66-19-20170913