Model: 1640
Brand: Gehl
This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of the Gehl Model 1640 Rear Unload Forage Box. Adherence to the instructions herein will ensure optimal performance and longevity of your equipment. Please read this manual thoroughly before operating the machine.

Image: Cover of the Gehl 1640 Rear Unload Forage Box Operator's Manual. The cover displays "1640 Rear Unload Forage Box" prominently, along with an illustration of the forage box itself. The manual title "OPERATOR'S MANUAL" is at the bottom, and "GEHL AGRICULTURE" is vertically aligned on the right side.
Always prioritize safety when operating or maintaining the Gehl 1640 Forage Box. Read and understand all safety decals on the forage box and in this manual before operation. Failure to follow safety instructions can result in serious injury or death.
Proper setup is crucial for the safe and efficient operation of your Gehl 1640 Forage Box. Follow these guidelines for initial preparation and connection to the tractor.
Verify that all tires are inflated to the recommended pressure as specified in the tire manufacturer's guidelines or on the forage box's data plate. Correct tire pressure is essential for stability and load capacity.
This section details the procedures for operating the Gehl 1640 Forage Box, including pre-operation checks, loading, and unloading.
Regular maintenance is essential for the longevity and reliable operation of your Gehl 1640 Forage Box. Follow the recommended schedule and procedures.
| Component | Lubricant Type | Frequency |
|---|---|---|
| PTO Shaft Universal Joints | Multi-purpose Grease | Daily / Every 8 hours |
| Wheel Bearings | Wheel Bearing Grease | Annually / 200 hours |
| Conveyor Chains | Chain Lubricant | Weekly / 50 hours |
This guide provides solutions for common operational issues encountered with the Gehl 1640 Forage Box. For complex problems, consult an authorized service technician.
| Problem | Possible Cause | Solution |
|---|---|---|
| Forage not unloading evenly | Uneven loading; conveyor chain tension incorrect; obstruction in discharge area. | Load forage uniformly; check and adjust chain tension; clear any obstructions. |
| Excessive vibration | Loose fasteners; worn bearings; unbalanced load. | Tighten all fasteners; inspect and replace bearings; ensure even loading. |
| PTO shaft disengages | Improperly latched; worn universal joint; incorrect PTO length. | Ensure PTO is fully latched; inspect universal joints; verify PTO shaft length is correct for tractor. |
Key technical specifications for the Gehl Model 1640 Rear Unload Forage Box.
Note: Exact specifications may vary slightly based on manufacturing revisions. Always consult the physical manual for precise details.
For detailed warranty information, parts ordering, or technical assistance regarding your Gehl 1640 Rear Unload Forage Box, please contact your authorized Gehl dealer. They are equipped to provide expert service and genuine Gehl parts.
You can locate your nearest authorized dealer by visiting the official Gehl website or by contacting Gehl customer service directly.
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