Baler Component Overload Protections

Before approaching machine:

1. Turn off PTO.
2. Stop tractor engine and remove ignition key.
3. Apply flywheel brake.

Do not start up baler again until cause of problem has been identified and solved.

E75975-UN-21MAY14

A - Friction Clutch

Only restart machine once the cause of the failure has been identified and solved. Working with a defective or unsafe machine results in serious personal injuries or heavy material damage.

To avoid machine damage, check and adjust the friction clutch (A). (See Adjust Friction Clutch in Service section.)

The friction clutch (A) protects secondary driveline.

The following can cause the friction clutch to activate:

• An active flywheel brake.
• A too high plungerhead load during starting.
• A too high PTO rpm during starting.

Solutions:

1. Release flywheel brake.
2. Decrease tension system pressure.
3. Start at a low PTO rpm and slowly increase PTO rpm.

E75995-UN-22MAY14

E75997-UN-12NOV14

A - Shear Bolt

B - Shear Bolt

The shear bolt clutch (A) protects main gear case.

If main drive has stopped due to an overload and shear bolt is broken:

1. Stop PTO.
2. Replace shear bolt (B) with a genuine replacement shear bolt.

   Do not use a substitute bolt higher than a grade 10.9 strength or damage to machine occurs. Only use genuine shear bolt (contact your John Deere dealer).

3. Clear pickup, rotor, and precompression chamber of any crop plug or foreign objects.
4. If necessary, dump tension system pressure using ISOBUS monitor.
5. Start machine.
6. Continue baling.

E75996-UN-22MAY14

A - Cam-Type Clutch

The cam-type clutch (A) protects the main gear case from overload. Cam clutch disengages when crop load becomes too high or a foreign object blocks plunger.

To reengage the automatic cam-type clutch decrease the PTO rpm.

• Reengage PTO as soon as the cam clutch engages to avoid a hard start-up of the machine.
• If the cam clutch does not engage, dump tension system pressure and attempt a restart.
• If necessary, clear crop from precompression chamber and front of plunger.

E75976-UN-21MAY14

A - Cam-Type Clutch

Only restart machine once the cause of failure has been identified and solved. Working with a defective or unsafe machine results in serious personal injuries or heavy material damage.

The cam-type clutch (A) protects the intake rotor.

To reengage the cam-type clutch decrease the PTO rpm.

Move 1—2 m (3—6 ft) backwards to stop crop flow.

Slowly increase PTO rpm.

E75977-UN-21MAY14

E75978-UN-21MAY14

A - Cam-Type Clutch

B - Service Cover

Overload is the result of excessive load on feeder fork (for example driving speed too high, presence of foreign objects, and others).

Stay clear of service cover during opening. Compressed material can cause the cover to spring open suddenly and cause injury.

Only restart machine once the cause of failure has been identified and solved. Working with a defective or unsafe machine results in serious personal injuries or heavy material damage.

The phased cam-type clutch (A) protects the packer.

To reengage the automatic cam-type clutch decrease the PTO rpm.

If the feeder fork clutch does not reengage:

1. Stop machine.
2. Stop PTO.
3. Open service cover (B) underneath precompression chamber and clear crop or foreign objects.

E75979-UN-21MAY14

A - Radial Pin Clutch

Only restart machine once the cause of failure has been identified and solved. Working with a defective or unsafe machine results in serious personal injuries or heavy material damage.

The radial pin clutch (A) protects the pickup drive.

The following can cause the automatic clutch to activate:

• An excessive load on pickup.
• Pickup too low to ground.
• Foreign objects in the pickup reel.

Stop tractor, shut off engine, engage flywheel brake, and wait for all motion to stop. Clear plug from pickup and restart baler.

E77745-UN-18DEC14

A - Shear Bolt (2 used)

Only restart machine once the cause of failure has been identified and solved. Working with a defective or unsafe machine results in serious personal injuries or heavy material damage.

If there is an overload, the two shear bolts (A) protect the needles.

Shear bolts are designed to fail under a predetermined load. Always replace shear bolts with identical grade:

• Shear bolts 1/4 x 3-1/4 in, Grade 8
• Lock nuts, Grade 9

Only use genuine shear bolts (contact your John Deere dealer).

Replace shear bolts (A) with genuine parts. Tighten nuts to specification.

Shear Bolt	Torque	5.4 N·m (48 lb·in + 1/2 turn)