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How do I connect the hydraulics for the JOHN DEERE QRG 2680H?
The hydraulic connections for the JOHN DEERE QRG 2680H are as follows:
| SCV | Function |
|---|---|
| I | Front Wheel Lift |
| II | Rear Roller Lift |
| III | Main Frame Lift |
| IV | Wings |
| V | Hitch Jack Lift |
| VI | Optional Scraper |
What are the engine horsepower requirements for the JOHN DEERE QRG 2680H?
The engine horsepower requirements for the JOHN DEERE QRG 2680H are based on machine size and may vary depending on soil conditions and digging depth:
| Machine Size | Tractor Power |
|---|---|
| 16 ft | 220 hp Minimum |
| 18 ft | 250 hp Minimum |
| 21 ft | 290 hp Minimum |
| 24 ft | 340 hp Minimum |
How do I perform the unfolding sequence for the JOHN DEERE QRG 2680H?
To unfold the JOHN DEERE QRG 2680H, follow these steps:
1. Remove transport lock pins (A) from the cradles and place in storage location.
2. Extend SCV III until wings clear the cradles.
3. Extend SCV IV to unfold the wings.
4. Place both SCV III and SCV IV into the FLOAT position to lower the machine.
How do I perform the folding sequence for the JOHN DEERE QRG 2680H?
To fold the JOHN DEERE QRG 2680H, follow these steps:
A. Take SCV III and SCV IV out of the FLOAT position and retract SCV III until wing is perpendicular to the ground.
B. Retract SCV IV to fold wings inward until touching inner edge of cradles.
C. Retract SCV III until resting in cradles.
D. Insert and lock transport pins in place.
How do I adjust the operating depth for the JOHN DEERE QRG 2680H?
To adjust the operating depth of the JOHN DEERE QRG 2680H, follow these guidelines:
To adjust depth, raise wheel cylinders (A) and basket cylinders (B). Add cylinder stops for shallower depth. Remove stops for deeper depth. Refer to the following table for the number of stops required:
| Depth | Number of Stops |
|---|---|
| 2.0 in | 9 |
| 2.5 in | 8 |
| 3.0 in | 7 |
| 3.5 in | 6 |
| 4.0 in | 5 |
| 4.5 in | 4 |
| 5.0 in | 3 |
| 5.5 in | 2 |
| 6.0 in | 1 |
What are the in-field operation guidelines for the JOHN DEERE QRG 2680H?
Follow these instructions for operating the JOHN DEERE QRG 2680H in the field:
Ensure SCV III (Main Frame Lift) and SCV IV (Wings) are in the FLOAT position.
Adjust operating speed between 10 to 14 mph.
For headland turns, make skip row passes at the desired operating depth.
Ensure a minimum of 6 to 8 inches overlap.
When backing up, raise the machine using SCV I and SCV II. If the JOHN DEERE QRG 2680H is equipped with the rubber roller attachment, raise the scraper using SCV VI.
IMPORTANT: Do not reverse the JOHN DEERE QRG 2680H in ground or damage may occur. Do not use SCV III (Main Lift) during reversals and turns. Do not make sharp turns causing tires to contact the hitch.
What are the recommended machine settings for the JOHN DEERE QRG 2680H?
The JOHN DEERE QRG 2680H settings vary by application:
| Machine Setting | Fall Tillage | Spring Tillage |
|---|---|---|
| Depth | 3.5 to 4.5 in | 2 to 3 in |
| Soil Deflector | Storage Position (High Residue) | Engaged Position (Low Residue) |
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