Spray Boom Folding / Unfolding - Hydraulic control

Boom folding/unfolding (for sprayers with hydraulic control)

Both hydraulic hoses must be connected to a double-acting selective control valve on the tractor. Proceed as follows to unfold the spray booms:

1. Place the spray boom in its highest position by operating the single-acting selective control valve of the tractor. The boom will get out of the boom supports. The pendulum system stays locked as long as the boom is folded in. The pendulum lock is operated by means of a hydraulic locking cylinder (A).

2. Unfold the left and right hand spray boom segments by operating the relevant double-acting selective control valve of the tractor.

3. If the spray boom arms are folded out completely, the pendulum lock cylinder will be activated to unlock the pendulum system. This will take approximately 3 seconds. Therefore keep the double-acting control valve of the tractor operating for about another 5 seconds after the boom is folded out, so the pendulum lock is free.

4. Lower the spray boom to the required spray boom height using the hydraulic height adjuster.

IMPORTANT: Be sure that after unfolding the spray boom, the pendulum lock is completely unlocked, since otherwise serious damage to the spray boom and suspension could be caused.

Folding of the spray boom takes place in reverse order:

1. Place the unfolded spray boom in its highest position by operating the appropriate single-acting selective control valve of the tractor.

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A-Pendulum Lock Cylinder

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2. Set the boom tilt correction in the neutral position by operating the appropriate double-acting selective control valve of the tractor, before folding of the spray boom.

3. Fold the left and right hand spray boom arms by operating the appropriate double-acting selective control valve of the tractor. The pendulum lock will first be engaged and then both boom segments will fold in. If the boom is completely folded in, the transport hook for the parallelogram height adjustment will move forward.

4. Lower the folded spray boom until it rests on the transport support rolls and the electrical switch lock the height adjustment. The height adjustment can then not be lowered any further.

NOTE: If the boom folding sequence is not as described, then the sequence valves of the hydraulic system on the sprayer should be adjusted. See your John Deere dealer.

Boom folding/unfolding (for sprayers with hydraulic selector)

Proceed as follows to unfold the spray booms:

1. Place the spray boom in its highest position by operating the single-acting selective control valve of the tractor. The boom will move out of the boom supports. The pendulum system should be locked as long as the boom is not folded out. The pendulum lock is operated by means of a hydraulic locking cylinder (A).

2. Unfold the left and right hand inner spray boom segments by setting boom fold switch 2 on the hydraulic selector (EHS-1) in the upper position (with all other switches in the lower position) and operating the appropriate double-acting selective control valve of the tractor. The inner boom segments will fold out.

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3. Unfold the left and right hand outer boom segments by setting boom tip fold switches 3 and 4 on the hydraulic selector (EHS-1) in the upper position (with all other switches in the lower position) and operating the double-acting selective control valve of the tractor. The outer left and right hand boom segments will fold out.

4. If the outer boom segments are folded out completely, the pendulum lock cylinder has to be unlocked. Set pendulum lock switch 5 on the hydraulic selector (EHS-1) in the upper position (with all other switches in the lower position) and activate the appropriate double-acting selective control valve of the tractor for about 10 seconds until the pendulum lock is completely unlocked.

IMPORTANT: Be sure that after unfolding the spray boom, the pendulum lock is completely unlocked, since otherwise serious damage to the spray boom and suspension could be caused.

5. Lower the spray boom to the required boom height by operating the appropriate single-acting selective control valve of the tractor.

Folding of the spray boom takes place in reverse order:

1. Place the unfolded spray boom in its highest position by operating the appropriate single-acting selective control valve of the tractor.

2. Set the boom tilt correction in the neutral position, before folding of the spray boom. Therefore boom tilt switch 6 on the hydraulic selector needs to be set in the upper position (with all other switches set to the lower position) and operating the appropriate double-acting selective control valve.

3. Lock the pendulum system by setting switch 5 of the hydraulic selector in the upper position (with all other switches in the lower position) and operating the appropriate double-acting selective control valve of the tractor for about 10 seconds.

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4. Fold the left and right hand outer spray boom segments by setting boom tip fold switches 3 and 4 on the hydraulic selector (EHS-1) in the upper position (with all other switches set to the lower position) and operating the appropriate double-acting selective control valve of the tractor. The outer left and right hand boom segments will fold in.

5. Fold the left and right hand inner spray boom segments by setting boom fold switch 2 on the hydraulic selector (EHS-1) in the upper position (with all other switches set in the lower position) and operating the appropriate double-acting selective control valve of the tractor. The inner boom segments will fold in simultaneously.

6. Lower the folded spray boom by operating the appropriate single-acting selective control valve of the tractor, until the boom rests on the transport support rolls and the electric switch for transport lock locks the height adjustment. The height adjustment can then not be lowered any further.

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