Check Pickup Slip Clutch Torque (MegaWide™ HC2 Feed System)

For beginning of season service, ensure that slip clutch is free to slip. Do not need to check slip clutch torque values.

Improper pickup height, gauge wheel, or float spring adjustments can result in excessive slip clutch slipping.

Clutch must slip within specifications when slipped at the gear case output hex shaft. As the clutch wears, it can gradually transmit less power due to slipping, and feeding performance can be unsatisfactory.

Clutch Slip		290—420 N·m (214—310 lb·ft)

TS698-UN-21SEP89

The slip clutch should slip at 420 N·m (310 lb·ft). To avoid possible damage to the pickup, replace the slip clutch.

To check slip clutch torque:

1. Raise gate fully and the lock gate.

2. Raise the pickup.

3. Disconnect the PTO from the tractor.

4. 
   E83336-UN-06JUN17

   A - Pickup Stripper

   Remove the two left-hand side pickup strippers (A).

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5. 
   E83337-UN-06JUN17

   A - Pry Bar

   B - Tooth Bar

   C - Center Shaft

   To prevent the pickup from rotating, position the pry bar (A) between the tooth bar (B) and the center shaft (C).

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6. To prevent the chain from jumping the sprocket while trying to slip the clutch:

   • Tighten the chain.
   • Make sure idler arm pivots freely and is spring loaded.
   • Add alignment marks (or tape) on the clutch sprocket and on the hex shaft going through the clutch. These marks can determine whether the clutch slipped or the chain jumped during each slip test.
   
   

7. Rotate output shaft and slip clutch a minimum of four ratchets before recording measurements.

   
   E61193-UN-22MAR12

   A - Hex Output Shaft

   To identify clutch specifications:
   • Set click-type torque wrench to 290 N·m (214 lb·ft)
   • Install torque wrench, with extension, on the hex output shaft (A) at the left-hand side of the baler.
   • Turn wrench clockwise. Wrench must click before clutch slips. Repeat procedure three times.
   • Set torque wrench to 420 N·m (310 lb·ft)
   • Turn wrench clockwise. Clutch must slip before wrench clicks. Repeat procedure three times.
   
   

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8. If clutch slips below the following specifications, replace outer housing and ratchets with springs or replace complete clutch.

   Pickup Clutch (Smooth Housing)	Slip (Minimum)	290 N·m (214 lb·ft)

9. Never use any type of tool or wrench on shafts while the tractor engine is operating. Always remove tools from the shaft as soon as the procedure is finished.

   Remove tools from shafts.

10. 
    E83336-UN-06JUN17

    A - Stripper (as required)

    Remove tools from the pickup and reinstall the strippers (A).

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11. Install the shields.

12. Unlock and close the gate and close the doors.