Check Pickup Slip Clutch Torque (MegaWide™ Plus)

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

Excessive slip clutch slipping can be caused by improper pickup height, gauge wheel, or float spring adjustments.

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

If slip clutch does not slip at 420 N·m (310 lb.-ft.), clutch is not working correctly. Replace slip clutch to avoid possible damage to pickup.

To check slip clutch torque:

1. Raise gate fully and lock gate.

2. To reduce torque reading variations, tighten lower drive roll chain. (See ADJUST LOWER DRIVE ROLL CHAIN in this section.)

3. Raise pickup.

4. Disconnect PTO from tractor.

5. 
   E70463-UN-22JUL13

   A - Right-Hand Shield

   Remove right-hand shield (A).

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6. 
   E61192-UN-22MAR12

   Auger or Rotor Shaft

   A - Quick-Lock or Cap Screw

   MegaWide™ Plus Pickup; Remove cap screw (A) and washers from auger or rotor shaft.

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7. Use a 1 in. drive breaker bar or weld a heavy 1-1/4 in. socket to a 10 x 76 x 914 mm bar to hold shaft in place. Smaller breaker bar or wrench can break or bend.

   Install a tool on reel or auger or rotor shaft to prevent the shaft from rotating counterclockwise.

8. To avoid 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.
   
   

9. 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 hex output shaft (A) at left-hand side of 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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10. 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.)

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

    Remove tools from shafts.

12. Install right-hand shields.

13. Unlock and close gate.