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John Deere 3520 Attachments

John Deere 3520 Front End Loader

300X Loader Specifications

Type of Attachment - Front End Loader
Compatibility - John Deere 3520
Lift capacity at pivot pin (max. ht.) - 1,360 lb. (617 kg)
Lift capacity at 500 mm ahead of pivot pin - 999 lb. (453 kg)
Lift capacity to 59 in. at pivot pin - 1,700 lb. (771 kg)
Lift capacity to 59 in. at 500 mm ahead - 1,312 lb. (595 kg)
Max. lift height at pivot pin - 86 in. (2289 mm)
Reach at max. height - 30.4 in. (773 mm)
Breakout force at pivot pin - 2,855 lbf. (12 700 N)
Dump angle - 43 deg.
Rollback angle - 25 deg.
Loader raising/lowering time - 2.76/1.69 sec.
Bucket dump time/regen - 2.81/1.17 sec.
Bucket rollback time - 1.78 sec.

Attaching Ballast Box to JD 3520 Tractor with Quick Coupler Hitch - Slowly push hitch control lever to lower hitch until quick coupler hooks are lower than ballast box hitch pins. Back up tractor to ballast box. Make sure latch control levers are down. Slowly pull hitch control lever to engage ballast box hitch pins in quick coupler hooks. Raise ballast box and check for interference. Lower ballast box to ground and adjust if necessary.

300CX Loader Specifications

Type of Attachment - Front End Loader
Compatibility - John Deere 3520
Lifting capacity at pivot pin (maximum height) - 1598 lb. (725 kg)
Lifting capacity at 0.5 m ahead of pivot pin - 1122 lb. (509 kg)
Lifting capacity to 59 in. at pivot pin - 2125 lb. (964 kg)
Lifting capacity to 59 in. at 0.5 m ahead - 1649 lb. (748 kg)
Maximum Lifting height at pivot pin - 102 in. (2,59 m)
Reach at maximum height - 22,1 in. (0,56 m)
Breakout force at pivot pin - 3327 lbf. (14799N)
Dump angle - 41,4 degrees
Rollback angle - 31 degrees
Loader raising/lowering time - 3,57/2,1 sec.
Bucket dump time/regen - 2,96/1,24 sec.
Bucket rollback time - 1,75 sec.

H165 Loader Specifications

Type of Attachment - Front End Loader
Compatibility - John Deere 3520
Lifting capacity at pivot pin (maximum height) - 1,598 lb. (725 kg)
Lifting capacity at 0,5 m ahead of pivot pin - 1,122 lb. (509 kg)
Lifting capacity to 59 in. at pivot pin - 2,125 lb. (964 kg)
Lifting capacity to 59 in. at 0,5 m ahead - 1,649 lb. (748 kg)
Maximum Lifting height at pivot pin - 102 in. (2600 mm)
Reach at maximum height - 22.1 in. (560 mm)
Breakout force at pivot pin - 3327 lb. (1509 kg)
Breakout force at 0,5 m - 2418 lb. (1097 kg)
Dump angle - 41,4 deg.
Rollback angle - 31 deg.
Loader raising/lowering time - 3,57/2,1 sec.
Bucket dump time/regen - 2,96/1,24 sec.
Bucket rollback time - 1,75 sec.

Attach H165 Loader - Drive JD 3520 tractor slowly, straight into H165 loader. Align masts with mounting frames. Engage tractor parking brake and/or place transmission in PARK. Shut off tractor engine and remove key. It may be necessary to drive tractor forward slowly to keep masts/frames in line while performing the following procedures. Be sure end plates on each mounting frame are aligned with inside guide of each mast. Start tractor engine. Release parking brake and/or place transmission in NEUTRAL. Make sure masts are fully seated on frame tubes. Slowly retract lift cylinders. Masts will lower onto mounting frames and parking stand will raise to front weight bracket. Dump bucket 10-20 degrees. Retract lift cylinders raising front wheels 25-50 mm (1-2 in.) off ground. Make sure there is no dirt or debris between bottom of front weight bracket and bottom bar of parking stand.

Top bar of parking stand should rest on top of front weight bracket with at least 25 mm (1.0 in.) of engagement. Check that bottom bar of parking stand is securely hooked against bottom of front weight bracket and top bar rests on top of front weight bracket with engagement within specification. Top Bar-to-Front Weight Bracket Engagement - 25 mm (1.0 in.). On both sides, make sure latch is fully seated against brace pad and latch pin is engaged with leaf spring. Place latch on both sides of loader in "Locked" position by pulling rearward on handle to engage latch pin with leaf spring. Cap screw should contact mast pad. Make sure hose bundle is routed to avoid contact with tractor. If hose support (if equipped) was previously detached from parking stand, reinstall it using spring locking pin. Extend lift cylinders and lift bucket from ground to ensure loader is properly mounted. Install ballast box. Engage tractor parking brake and/or place transmission in PARK. Shut off tractor engine and remove key.

Identifying Hose Connections

Plug/Cap Color - Black. Hydraulic Function: Bucket Cylinder-Rod End
Plug/Cap Color - Yellow. Hydraulic Function: Bucket Cylinder-Head End
Plug/Cap Color - Blue. Hydraulic Function: Lift Cylinder-Head End
Plug/Cap Color - Red. Hydraulic Function: Lift Cylinder-Rod End

John Deere 3520 Backhoe

485 Backhoe Specifications

Type of Attachment - Backhoe
Compatibility - John Deere 3520
Digging Depth - 2.67 m (105 in.)
Digging Depth (flat bottom) - 61 cm (24 in.)
Weight, With Large Frame Adapter and 24” Bucket - 662 kg (1460 lb)
Weight, With Medium Frame Adapter and 24” Bucket - 644 kg (1420 lb)
Swing Arc - 180 degrees
Loading Height (bucket at 60°) - 2.24 m (88 in.)
Reach From Center Line of Swing Pivot - 3.61 m (142 in.)
485 Backhoe Transport Height - 2.29 m (90 in.)
Bucket Rotation - 180 degrees
Loading Reach (bucket at 60°) - 1.17 m (46 in.)
Transport Overhang - 1.32 m (52 in.)
Undercut - 56 cm (22 in.)
Stabilizers Spread Width (Raised) - 1.37 m (54 in.)
Stabilizers Spread Width (Lowered) - 2.51 m (99 in.)
Boom Lift Capacity - 372 kg (820 lb)
Dipperstick Digging Force - 10,83 kN (2435 lb)
Bucket Digging Force - 16,59 kN (3730 lb)
Bucket Control Main Relief Valve Pressure - 17,58 MPa (2550 psi)

John Deere 3520 Mower

72" 7-Iron Mower Specifications

Model - 72-Inch 7-Iron Mid-Mount Mower
Mower Type - Mulch or Side Discharge
Compatibility - JD 3520
Cutting Blades - 3
Overall Width - 1050 mm (41.5 in.)
Overall Length - 2190 mm (86 in.)
Cutting Height - 25-230 mm (1-9 in.)
Cutting Width - 1800 mm (72.8 in.)
Mower Weight (Large Chassis Mower) - 150 kg (331 lb)
Mower Weight (Mid Chassis Mower) - 156 kg (345 lb)
Blade Bolt Torque - 122 Nm (90 lb-ft)
Gearbox Oil Capacity - 136 ml (4.6 oz)

Install Rear Wheels - 72" Mower ships from factory with rear wheels installed upside down in wheel shaft supports. Remove locking ring and drilled pin from both rear wheel shafts. Install rear wheels in operating position. Install drilled pins and locking rings.

Install PTO Driveline on Gearbox - Install key in slot in gearbox shaft. Coat shaft with MPG-2 anti-seize lubricant or equivalent. Install PTO driveline on gearbox shaft. Install M10x50 bolt. Tighten to 75 Nm (55 lb-ft).

Servicing Gearbox: Checking Oil Level - Remove plug from one side of gearbox. Oil level should be even with bottom edge of plug hole. If oil is low, add recommended oil. Install plug. Changing Oil - Remove gearbox bracket with gearbox. Remove plug on both sides of gearbox. Lift and turn gearbox bracket on side to drain oil from gearbox. Route belt around gearbox sheave as you install gearbox bracket on five bolts. Add recommended oil to bottom edge of plug hole in gearbox. Install plugs.

25A Flail Mower Specifications

Model - 25A Flail Mower
Compatibility - JD 3520
Hitch Type - Three-point hitch category 1,2
Cutting Width - 1981 mm (78 in.)
Cutting Height - 13-127 mm (0.5 in. to 5.0 in.)
Overall Width - 2223 mm (87.5 in.)
Overall Length - 914 mm (36 in.)
Overall Height - 991 mm (39 in.)
Deck Thickness - 3.17 mm (0.125 in.)
Side Plate Thickness - 6.35 mm (0.250 in.)
Minimum Horsepower (PTO) - 22 kW (30 hp)
Maximum Horsepower (PTO) - 56 kW (75 hp)
Power Take-Off - 540 rpm
Maximum Gear Case Power Rating - 56 kW (75 hp)
Continuous Gear Case Power Rating - 34 kW (45 hp)
Oil Capacity - 0.9 L (1.0 U.S. qt)
Belt Type - Section HC, Single
Knifes Type - Smooth-cut
Number of Smooth-cut knives - 36
Knife tip speed - 153 km/h (95 mph)
Rotor Tube Outer Diameter - 114 mm (4.50 in.)
Rotor Diameter (Flail Tips) - 438 mm (17.25 in.)
Rotor Speed - 1850 rpm
Rotation - Forward
Bearing Diameter - 35 mm (1.375 in.)
Gauge Roller Tube Outer Diameter - 140 mm (5.50 in.)
Bearing Diameter - 28.6 mm (1.125 in.)
Weight (approx.) - 286 kg (630 lb)

Attaching PTO Driveline - Shut off tractor engine. Raise tractor PTO shield, if equipped. Support driveline, cradling it in your hand. Align splines by rotating mower driveline. Pull locking collar and simultaneously push driveline onto tractor PTO shaft until locking device engages. Pull back on shield to make sure driveline is locked. Lower tractor PTO shield, if equipped. Attach PTO driveline shield chain to a fixed point on mower.

Attaching 25A Flail Mower to John Deere 3520 Tractor - Set load/depth control on tractor for no sensitivity to "position" control. Extend tractor telescoping draft link ends (if equipped). Back up tractor to mower with hitch points approximately in alignment. Engage tractor parking brake and place transmission in "Park". Shut off tractor engine and remove key. Remove center and lateral hitch pins. Align draft links with hitch masts and install side hitch pin assemblies according to tractor hitch category. Start tractor engine. Carefully back up tractor making sure both left and right telescoping draft link ends lock (if tractor equipped). Engage tractor parking brake and/or place transmission in "Park". Shut off tractor engine and remove key. Align center link with mower center hitch mast and install center link pin. Attach PTO driveline. Start tractor engine. Slowly pull hitch control lever to raise mower. Check for interference. Lower mower to ground and adjust if necessary.

360 Flail Mower Specifications

Model - 360 Flail Mower
Compatibility - JD 3520
Cutting Width - 4 ft. 10 in. (1.5 m)
Cutting Height - 0.5 to 5 in. (13 to 127 mm)
Hood Thickness - 0.188 in. (4.8 mm)
Blades Number - 54
Blades Type - Heat-treated, reversible, side-slicer knives mounted in pairs
Blades Tip Speed - 95 mph (153 km/h)
Rotor Speed - 1,850 rpm
Rotor Diameter - 4.5 in. (114 mm)
PTO Drive - 540 rpm
Gearcase (Continuous Rating) - 65 hp (34 kW)
Belts - Heavy-duty HC section
Gauge Roller - 5.5-in. (140 mm) dia.
Tractor hp Required (Minimum) - 30 hp (22 kW)
Tractor hp Required (Maximum) - 75 hp (56 kW)
3-Point Hitch - Category 1 or 2
Overall Width - 5 ft. 9 in. (1.76 m)
Overall Height - 3 ft. 3 in. (0.99 m)
Overall Length - 3 ft. 4 in. (1.00 m)
Weight - 794 lb. (360 kg)

John Deere 3520 Snowblower and Blade

59-inch Snowblower Specifications

Snowblower Type - Two-stage
Compatibility - JD 3520
Cutting Width - 59 in. (150 cm)
Overall Cutting Height - 23 in. (58,4 cm)
Auger Diameter - 16 in. (40,6 cm)
Rotor Fan Diameter - 16 in. (40,6 cm)
Chute Rotation - Hydraulic
Drive - Mid PTO
Weight (Approx.) - 450 Ibs (204 kg)
Hydraulic spout rotation - 200 degrees
Worm-gear drive - With durable cast-iron housing
Skid shoes - Three-position skid shoes
Snow-deflector spout - Adjustable

64-inch Snow blower Specifications

Model - Frontier SB2164
Type - Loader-Mount
Working Width - 64"
Transport Width - 70"
Working Height - 27"
Length - 39"
Single/Dual Auger - Single
Auger Diameter - 15"
Auger Flighting Thickness - 5/16"
Impeller Diameter - 24"
Impeller Width - 7"
Impeller Shaft Diameter - 1 1/4
Number of Impeller blades - 4
Impeller RPM - 680
Auger RPM - 200
Skid Shoe - Adjustable 6 positions
Skid Shoe Material - High carbon steel
End Plate Thickness 3/16"
Back Plate Thickness 11ga
Impeller Housing Thickness 11ga
Impeller Blade Thickness 1/4"
Side Panel Bottom Thickness 1/2"
Cutting Edge - Replaceable
Cutting Edge Dimension - 3/8" x 2"
Chute Base - Standard
Parking Stand - Standard
Loader Compatibility - JD 300 Series Loader
Flow / Pressure - 12 to 18 gpm @ 2700 psi
Oil Cooler - Standard
Fan Drive - 89 cc/rev. Hydraulic Motor
Auger Drive - 293 cc/rev. Hydraulic Motor
Chute Deflector Adjustment (standard) - Manual
Chute Rotation (standard) - Hydraulic
Chute - Two-part

Removing the 64" Frontier SB2164 Snowblower - Disconnect the harnesses snow blower side from the harnesses tractor side. Disconnect the male coupler of snow blower hose from female coupler of the hydraulic pump hose. Disconnect female coupler of snowblower hose from the male coupler of hydraulic pump hose. Install the dust caps on each coupler. Remove the hydraulic hoses and the electrical harness from the front support of the loader. Roll up the hoses around the chute so they don't drag on the ground. Remove the two linchpins. Disengage two universal hitch pins from the holes of front loader. Disengage the two universal hitch hooks from the loader brackets. Back away slowly.

60-inch Rear Blade Specifications

Type - Rear Blade
Model - Frontier RB1060
Compatibility - JD 3520
Working Width - 60" (152 cm)
Operating Weight (Mass) - 262 lbs (119 kg)
Tractor Size - 12 to 30 hp (9 to 22 kW)
3-Point Hitch - Category 1
Implement Code for Tractor Ballast - 15.0
Angle 360° - Locks at 0°, 15°, 30° forward right or left
Blade Tilt - 0°, 15° either side
Pitch Adjustment - In top link of tractor 3-point hitch