John Deere 520M Loader
Front End Loaders for Tractors
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Features
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Lift Capacity: NSL: 2292-2367 lbs (1039-1073 kg) MSL: 2821-3115 lbs (1280-1413 kg)
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Lift Height: NSL: 127-132 in. (3.234-3.370 m) MSL: 127-132 in. (3.234-3.370 m)
Specifications
Key Specs - Boom breakout force: |
Measured at pivot 2105 kgf 4640.7 lbf |
Key Specs - Bucket rollback force capacity: |
At ground-level line 2191 kgf 4830.3 lbf |
Key Specs - Clearance at full height - bucket dumped: |
2520 mm 99.2 in. |
Key Specs - Dump angle, degrees: |
-55 degree (angle) |
Key Specs - Lift capacity at full height: |
Measured at pivot 1598 kg 3523 lb |
Key Specs - Maximum lift height: |
3352 mm 132 in. |
Key Specs - Rollback angle, degrees: |
44 degree (angle) |
Loader - Base weight: |
906.29 kg |
Loader - Boom breakout force: |
Measured at pivot 2105 kgf 4640.7 lbf Measured at 800 mm ahead of pivot 1437 kgf 3168 lbf |
Loader - Bucket angle: |
Dump angle, degrees -55 degree (angle) Rollback angle, degrees 44 degree (angle) Dump angle, ground -144 degree (angle) |
Loader - Bucket rollback force capacity: |
At maximum height 1209 kgf 2665.4 lbf At 59-in. (1500-mm) lift height 2151 kgf 4742.1 lbf At ground-level line 2191 kgf 4830.3 lbf |
Loader - Bucket used: |
General Purpose 1850 mm 73 in. |
Loader - Bucket weight: |
178 kg 392 lb |
Loader - Cycle times: |
Loader raise, seconds 5.1 seconds Loader lower, seconds 3.4 seconds Bucket dump, seconds 4.3 seconds Bucket rollback, seconds 2.6 seconds |
Loader - Digging depth: |
73 mm 2.9 in. |
Loader - Dimensions: |
Maximum lift height 3352 mm 132 in. At full height - bucket level 3157 mm 124.3 in. At full height - bucket dumped 2520 mm 99.2 in. |
Loader - Leveling configuration: |
Non-Self Leveling (NSL) |
Loader - Lift capacity at 59 in. (1500 mm): |
Measured at pivot 1828 kg 4030 lb Measured at 800 mm ahead of pivot 1349 kg 2974 lb |
Loader - Lift capacity at full height: |
Measured at pivot 1598 kg 3523 lb Measured at 800 mm ahead of pivot 1040 kg 2292.8 lb |
Loader - Overall length: |
4.3 m 14.1 ft |
Loader - Reach: |
At maximum height 1038.2 mm 40.9 in. At ground level - bucket level 2248 mm 88.5 in. |
Tractor - Front tire: |
320/85 R24 BKT (12.4 R24) |
Tractor - Model: |
5E Final Tier 4 (FT4) 3-Cyl (5045E, 5055E, 5065E, 5075E) |
Tractor - Pump capacity: |
11 gpm |
Tractor - Rated pressure: |
2828 psi |
Tractor - Rear tire: |
420/85 R30 BTK (16.9) |
Tractor - Wheelbase: |
81 in. |
Loader suspension system (LSS) to enhance the ride
Nitrogen-charged accumulator and electric valve
Operator on/off switch
LSS on H180
LSS on 5E and 5M
An enhancement to the loader is the suspension system. A great level of loader productivity is achieved with the LSS.
- An accumulator charged with nitrogen and connected to the head-end lift cylinder hose through a T-fitting provides shock absorption
- The cylinders move in and out to allow the boom to float
Performance
- Bales can be transported more efficiently from one end of the field to the other over frozen, hard-packed, or rutted terrain.
NOTE: Check bale-handling capability of tractor before use.
- Pallets can be moved easily without sustaining cargo damage
- Pallets of seed or fertilizer can be carried across a yard without a bag spilling and creating a costly mess
- Properly ballasted tractor with LSS has increased stability, creating a smoother ride for the operator
Cost of ownership
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Extended life of loader pins and bushings
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Less stress on tractor axle
Reasons for turning LSS off include:
- Digging applications - with LSS on, the cylinders retract slightly, losing lifting power
- Holding a grade when blading - with LSS on, it is difficult to hold a constant grade
- Precise pallet and bale handling - with LSS on, the load moves up and down slightly while being positioned
- Parking a loader - with LSS on, when down pressure is applied, the lift cylinders retract slightly, making it more difficult to park
The switch is conveniently located in the operator station to avoid having to exit the operator station to manually move the handle on the LSS.
LSS can also be ordered with a manual shutoff. Depending on the tractor/loader model, the accumulator is located in different places. On the H180, the accumulator is mounted outside the bottom of the mounting frame. On the 5 Series Tractors, the accumulator is mounted near the inside of the rear right wheel. On 6 Series Tractors and larger, it is mounted in between the hydraulic connection and the mounting frame.
False rod bucket cylinders improve productivity
False rod cylinder
Fast bucket cycle times are important to dump the load from the bucket as quickly as possible, (quite often) in order to be as productive as possible, while completing loading operations. The bucket cylinder design can have a major impact on this cycle time, especially for the mechanical self-leveling (MSL) loaders.
Therefore, all MSL 520M and H-Series Loaders utilize false rod bucket cylinders. A false rod cylinder has a smaller displacement of oil requirement on the head end of the cylinder, which allows this cylinder to dump much faster than a normal cylinder.
Single-point hydraulic connection saves time
Single-point hydraulic connection on row-crop tractor (closed)
Single-point hydraulic connection on utility tractor (closed)
The 520M, H240, 540M, H260, and H310 Loaders can be configured with a single-point hydraulic connection that also incorporates the connection point for any electrical needs. To disconnect the hydraulic connection between the loader and the tractor, it is necessary to relieve the hydraulic system oil pressure on the tractor.
Loader removal (parking) made easy
Parking stands
John Deere loaders are easily removed and reinstalled on tractors without tools. The parking system allows removing or attaching the loader to the tractor in minutes without the need for tools.
To remove or park the loader, apply slight down pressure to the loader boom with the bucket dumped at approximately a 30-degree angle. With the tractor in park, lower the parking stands and place the mast pins in the open position.
Removing or parking the loader
Parking stand in stored position
Removing parking stand
Mast pin in the closed position
Rotating mast pin to the open position
Utilizing the boom circuit with the tractor in neutral, rotate the mast forward until the mast has rotated past the pin location on the mounting frame by extending the lift cylinder. Using the bucket circuit, roll back the bucket until the mast is removed from the pocket and will clear the tires.
Mast pin in the open position
Masts rotate forward, then bucket rolled back
With the tractor in park, shut the engine off and relieve the hydraulic pressure as indicated for the tractor (rotating the joystick). Disconnect or open the single-point hydraulic connector (or remove couplers if no single point is installed).
Disconnect/open single-point hydraulic connection
Disconnect/open single-point hydraulic connections
Store the loader half of the single-point connector or hoses, and back away from the loader.
Single-point hydraulics disconnected
Parked loader
Boom lockout for easy service
Hydraulic shut-off valve (open position)
Hydraulic shut-off valve (closed position)
A hydraulic shut-off valve is included with the M- and H-Series Ag Loaders to ensure the loader does not lower suddenly. For example, this allows the boom to be locked out when someone is required to be located under the loader boom for service work on the tractor. It should not be used for extended periods of time unless an appropriate support stand is also utilized.