John Deere 660R
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  • Boom lockout for easy service
    Hydraulic shut-off valve (open position)Hydraulic shut-off valve (open position)
    Hydraulic shut-off valve (closed position)Hydraulic shut-off valve (closed position)

    A hydraulic shut-off valve is included with the R-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.

  • Loader options to improve productivity
    RTP screen shownRTP screen shown
    Hydraulic remote latch shownHydraulic remote latch shown

    The R-Series Loaders come with a number of options to enhance an operator’s experience and to allow more productivity in the field. These options include lighting, hydraulic remote implement latch, loader suspension system, and industry-exclusive return-to-position (RTP) Gen2 technology with electronic self-leveling.


    Loader lights for enhanced visibility in low-light conditions

    Hydraulic remote implement latch

    Return-to-Position (RTP) Gen2 with electronic self-leveling (ESL)

    Loader suspension system for a smoother ride


    All of these options are powered using a common electrical harness. Features can be added or subtracted to get the job done right.

  • Single-point hydraulic connection saves time
    Single-point hydraulic connection (open)Single-point hydraulic connection (open)
    Single-point hydraulic connection (closed)Single-point hydraulic connection (closed)

    The 620R, 640R, 660R, and 680R Loaders can be ordered 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.

  • Concealed oil lines improve appearance and reduce damage
    Concealed oil lines through boom arm (H-Series Loader is representative only)Concealed oil lines through boom arm (H-Series Loader is representative only)
    Oil lines routed through the boom armOil lines routed through the boom arm
    Oil lines routed through the torque tubeOil lines routed through the torque tube

    Through time, increased width in tractor hoods have caused issues with available space for running traditional oil lines of a loader along the boom, making them more susceptible to damage.


    To improve this situation, the oil lines have been routed through the boom arm and the torque tube, improving line protection and the appearance of the loader.

  • False rod bucket cylinders improve productivity mechanical self-leveling (MSL) only
    False rod cylinderFalse 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 MSL loaders. 


    All MSL R-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.

  • Loader removal (parking) made easy
    Automatic mast latch systemAutomatic mast latch system

    R-Series Loaders are now even easier to remove and reinstall due to an automatic mast latch system. Simply exit the tractor once for removal and once for reinstall to reduce the amount of downtime associated with loader parking.


    For a more detailed look at the steps, please refer to the operator’s manual.

    To remove the loader, follow these simple steps:

    • Set the bucket flat on ground, release the hydraulic pressure, and exit the tractor.
    • Set the adjustable parking stands on the ground. 
    • Flip the lock handles located on either mast to unlock the loader from the frames.

    • Disengage the hydraulic couplers and return to the tractor seat.
    • Back away from the loader.

    To reinstall the loader follow these simple steps:

    • Drive the tractor into the loader, resulting in mechanical connection (no more maneuvering the loader to fit into the frames).
    • Exit the tractor.
    • Fold up the parking stands.
    • Attach the hydraulic connection.
    • Enter the tractor and have full control of the loader.



Leveling configuration Non-Self Leveling (NSL)
Bucket used Heavy-duty grapple 2150 mm
Heavy-duty grapple 85 in.
Bucket weight 327 kg
721 lb
Lift capacity at full height Measured at pivot (U)
2564 kg
5663 lbMeasured at 800 mm ahead of pivot (V)
1861 kg
4103 lb
Lift capacity at 59 in. (1500 mm) Measured at pivot (W)
2800 kg
6173 lbMeasured at 800 mm ahead of pivot (X)
2222 kg
4899 lb
Boom breakout force Measured at pivot (Y)
2958 kgf
6521 lbfMeasured at 800 mm ahead of pivot (Z)
2237 kgf
4932 lbf
Bucket rollback force capacity At maximum height (VV)
2916 kgf
6429 lbfAt 59-in. (1500-mm) lift height (XX)
4601 kgf
10143 lbfAt ground-level line (ZZ)
4505 kgf
9932 lbf
Dimensions Maximum lift height (A)
4495 mm
177 in.At full height - bucket level(B)
4255 mm
168 in.At full height - bucket dumped (C)
3481 mm
137 in.
Overall length (I+F), ft (m) 5.6 m
18.4 ft
Digging depth (H) 81 mm
3 in.
Reach At maximum height (D)
1038 mm
41 in.At ground level - bucket level (F)
2848 mm
112 in.
Bucket angle Dump angle, degrees (E)
60 degree (angle)Rollback angle, degrees (G)
48 degree (angle)Dump angle, ground
146 degree (angle)
Cycle times Loader raise, seconds
3.98 secondsLoader lower, seconds
2.75 secondsBucket dump, seconds
2.65 secondsBucket rollback, seconds
1.81 seconds