Specifications, Service and Repair of Farm and Lawn Tractors

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John Deere 4720 Attachments

John Deere 4720 Front End Loader

400CX Loader Specifications

Type of Attachment - Front End Loader
Compatibility - John Deere 4720
Lift capacity at pivot pin (max. ht.) - 2,194 lb. (997 kg)
Lift capacity at 500 mm ahead of pivot pin - 2,339 lb. (1063 kg)
Lift capacity to 59 in. at pivot pin - 2,627 lb. (1194 kg)
Lift capacity to 59 in. at 500 mm ahead - 2,576 lb. (1171 kg)
Max. lift height at pivot pin - 110.9 in. (2817 mm)
Reach at max. height - 27.5 in. (699 mm)
Breakout force at pivot pin - 3,512 lbf. (15 622 N)
Dump angle - 45 deg.
Rollback angle - 41 deg.
Loader raising/lowering time - 3.68/2.48 sec.
Bucket dump time/regen - 1.6/.90 sec.
Bucket rollback time - 1.1 sec.

H180 Mechanical Self-Leveling Loader Specifications

Type of Attachment - Front End Loader
Compatibility - John Deere 4720
Loader Type - Mechanical Self-Leveling (MSL)
Bucket Width - 1850 mm (73 in.)
Bucket Length - 585 mm (23 in.)
Bucket Mass - 146 kg (321 lb.)
Hydraulic System Rated Flow - 60 L/min. (16 gpm)
Hydraulic Maximum Pressure - 17238 kPa (172 bar) (2500 psi)
Lift Height (Maximum) To Pivot Pin - 2767 mm (109 in.)
Bucket Level Clearance - 2562 mm (101 in.)
Bucket Dumped Clearance - 2220 mm (87 in.)
Overall Length - 3585 mm (141 in.)
Digging Depth - 164 mm (6 in.)
Reach At Maximum Lift Height with Bucket Dumped - 762 mm (30 in.)
Bucket Reach on Ground with Bucket Leveled - 1739 mm (68 in.)
Dump Bucket Angle - 47°
Dump Bucket Angle at Ground - 130°
Rollback Bucket Angle - 42°
Overall Height In Carry Position - 1535 mm (60 in.)
Lift Capacity To Maximum Height at Pivot Point - 1126 kg (2477 lb.)
Lift Capacity To Maximum Height - 990 kg (2178 lb.)
Lift Capacity To 1500 mm (59 in.) at pivot pin - 1338 kg (2944 lb.)
Lift Capacity To 1500 mm (59 in.) - 1284 kg (2825 lb.)
Breakout Force At Pivot Point - 17423 N
Breakout Force At 500 mm forward of pivot point - 15941 N
Bucket Rollback Force At maximum height - 11605 N
Bucket Rollback Force At 1500 mm (59 in) lift height - 18619 N
Bucket Rollback Force At Ground Level Line - 22249 N
Loader Raise Time - 2.42 sec.
Loader Lower Time - 1.63 sec.
Bucket Dump Time - 2.29 sec.
Bucket Rollback Time - 1.54 sec.

Skid-Steer Attachment Carrier - Make sure both latch handles are completely up and lock pins are fully retracted. Raise both latch handles into the UP (unlatched) position. Start tractor engine and raise H180 loader off ground. Extend bucket cylinders to tilt carrier forward. Slowly drive forward and raise H180 loader, until carrier plates are positioned under lip on bucket/attachment, then roll back bucket/attachment (retract bucket cylinders). Bucket/attachment should rest against carrier plates. Lower loader completely to the ground and shut off tractor engine. Lower latch handles to engage pins with latches on bucket/attachment. Start tractor engine. Tilt bucket/attachment forward (extent bucket cylinders) and apply down pressure on bucket/attachment against ground to verify that pins are fully engaged in latches. Lower loader to the ground and shut off tractor engine.

If equipped with hydraulic operated attachment (grapple bucket): Connect hydraulic hoses as follows: Shut off tractor engine and remove key. Move control lever(s) back and forth and side-to-side (if applicable) several times to relieve system pressure. Push and hold collar on female coupler. Insert male coupler. Release collar on female coupler. Connect cap and plug together.

440R Non Self-Leveling Loader Specifications

Type of Attachment - Front End Loader
Compatibility - John Deere 4720
Loader Type - Non Self-Leveling (NSL)
Bucket Width - 1850 mm (73 in)
Length - 585 mm (23 in)
Mass - 146 kg (321 lb)
Hydraulic System Rated Flow - 60 L/min (16 gal/min)
Maximum Pressure - 17 237 kPa (172 bar) (2495 psi)
440R Loader Raise Time - 2.42 sec.
440R Loader Lower Time - 1.63 sec.
Bucket Dump Time - 1.82 sec.
Bucket Rollback Time - 1.08 sec.
Lift Height (Maximum) To Pivot Pin - 2767 mm (109 in)
Bucket Level Clearance - 2562 mm (101 in)
Bucket Dumped Clearance - 2164 mm (85 in)
Overall Length - 3585 mm (141 in)
Digging Depth - 164 mm (6 in)
Reach At Maximum Lift Height with Bucket Dumped - 762 mm (30 in)
Bucket Reach on Ground with Bucket Leveled - 1739 mm (68 in)
Dump Angle - 47°
Dump Angle at Ground - 128°
Rollback Angle - 44°
Overall Height - 1535 mm (60 in)
Lift Capacity To Maximum Height at Pivot Point - 1130 kg (2486 lb)
Lift Capacity To Maximum Height - 839 kg (1846 lb)
Lift Capacity To 1500 mm (59 in) at the Pivot pin - 1344 kg (2957 lb)
Lift Capacity To 1500 mm (59 in) - 1072 kg (2358 lb)
Breakout Force At Pivot Point - 17 501 N
Breakout Force At 500 mm forward of the Pivot point - 13 253 N
Bucket Rollback Force At Maximum Height - 9015 N
Bucket Rollback Force At 1500 mm (59 in) Lift Height - 14 225 N
Bucket Rollback Force At Ground Level Line - 15 029 N

400X Loader Specifications

Type of Attachment - Front End Loader
Compatibility - John Deere 4720
Lift capacity at pivot pin (max. ht.) - 2,368 lb. (1074 kg)
Lift capacity at 500 mm ahead of pivot pin - 1,742 lb. (790 kg)
Lift capacity to 59 in. at pivot pin - 2,634 lb. (1240 kg)
Lift capacity to 59 in. at 500 mm ahead - 2,181 lb. (981 kg)
Max. lift height at pivot pin - 112.8 in. (2864 mm)
Reach at max. height - 24.7 in. (628 mm)
Breakout force at pivot pin - 3,506 lbf. (15 595 N)
Dump angle - 46 deg.
Rollback angle - 31 deg.
400X Loader raising/lowering time - 3.68/2.48 sec.
Bucket dump time/regen - 2.44/1 sec.
Bucket rollback time - 1.44 sec.

John Deere 4720 Backhoe

448 Backhoe Specifications

Type of Attachment - Backhoe
Compatibility - John Deere 4720
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.)
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.)
448 Backhoe Boom Lift Capacity - 372 kg (820 lb)
SAE Dipperstick Digging Force - 10,83 kN (2435 lb)
SAE Bucket Digging Force - 16,59 kN (3730 lb)
Bucket Control Main Relief Valve Pressure - 17,58 MPa (2550 psi)
Digging Depth - 61cm (24 in.) flat bottom
Bucket Width - 61 cm (24 in.)
SAE Struck Capacity - 0.072 m3 (2.53 ft3)
Heaped Capacity - 0.099 m3 (3.48 ft3)
Bucket Width - 91 cm (36 in.)
SAE Struck Capacity - 0.111 m3 (3.92 ft3)
Heaped Capacity - 0.043 m3 (1.53 ft3)

Install Rockshaft Assist (RSA) Mounting Plates - Support the mower deck if installed. Remove the mower deck pivot plates: Tractor RH side only: Loosen ROPS bolt and move spring bracket out of the way. Remove M16x40 cap screws and pivot plate from both sides of tractor. Retain cap screws for use with mower deck if RSA mounting plates are removed. Install both mount weldments and pivot plates in bottom of rear axle with two M16x60 cap screws, and 5/8 in. washers. Tighten to 40 Nm (30 lb-ft). Install RSA mounting plates onto mount weldments from rear of tractor. Avoid pinching electrical wires. Loosely install two M16x45 cap screws and 5/8 in. washers in both RSA mounting plates. Loosely install M16x45 cap screw and 5/8 in. washer in RSA mounting plate and hex spacer on both sides of tractor.

Loosely install two M16x60 cap screws and washers in top two holes in both RSA mounting plates. Remove two M16x60 cap screws and washers securing mount weldments and pivot plates to bottom of left and right rear axle. Retain hardware for installation later. Remove and retain each pivot plate using a hammer and a punch. Install two M16x60 cap screws and 5/8 in. washers in bottom two holes in both RSA mounting plates. Tighten to 217 Nm (160 lb-ft). Install original M16x155 carriage bolt in square hole of pivot plate. Install pivot plate between mount weldment and bottom of tractor rear axle. Loosely install two M16x60 cap screws and 5/8 in. washers removed earlier.

Tighten hardware. Install mower deck pivot plates on lift arms with original hardware. Tractor RH side only: Move spring bracket back to its original position and tighten ROPS bolt (CC) to 138 Nm (102 lb-ft). Tighten the two M16x45 cap screws installed into the threaded hex spacers to 163 Nm (120 lb-ft). Install fenders if removed. Mount rear wheels in widest tread width position. Inflate tires to maximum pressure recommended by tire manufacturer. Install Tall Folding Roll Over Protection System (ROPS). Install Front Loader. Install Power Beyond kit. Follow machine operator’s manual instructions to check hydraulic fluid level.

John Deere 4720 Snowblower

76-inch Snowblower Specifications

Model - Frontier SB2176
Type - Loader-Mount
Compatibility - JD 4720
Working Width - 76 in.
Transport Width - 88 in.
Working Height - 27 in.
Length - 39 in.
Single/Dual Auger - Single
Auger Diameter - 15 in.
Auger Flighting Thickness - 5/16 in.
Impeller Diameter - 24 in.
Impeller Width - 8,5 in.
Impeller Shaft Diameter - 1,25 in.
Number of Impeller blades - 4
Impeller RPM - 580
Auger RPM - 185
Skid Shoe - Adjustable 6 positions
Skid Shoe Material - High carbon steel
End Plate Thickness 3/16 in.
Back Plate Thickness - 11ga
Impeller Housing Thickness - 11ga
Impeller Blade Thickness - 1/4 in.
Side Panel Bottom Thickness 1/2 in.
Cutting Edge - Replaceable
Cutting Edge Dimension - 3/8x2 in.
Chute Base - Standard
Parking Stand - Standard
Loader Compatibility - JD 400 Series Loader
Flow / Pressure - 18 to 23 gpm @ 3000 psi
Oil Cooler - Standard
Fan Drive - 127 cc/rev. Hydraulic Motor
Auger Drive - 409 cc/rev. Hydraulic Motor
Chute Deflector Adjustment (standard) - Manual
Chute Rotation (standard) - Hydraulic motor with electro-hydraulic valve
Chute - Two-part

74" Snow blower Specifications

Model - Frontier SB1174
Type - Rear Mount
Compatibility - JD 4720
Hitch - Cat. 1 and Cat. 2 iMatch
Steel skid shoes - Adjustable and replaceable
Cutting edge - Welded
Park Stand - Standard
Chute type - Two part
Chute deflector - Manual standard
Optional deflector adjustment - 3000 psi. (14,647 kPa)
Chute rotation - Manual or hydraulic 265 degrees
Working height - 26 in. (66.0 cm)
Transport width - 74 in. (188.0 m)
Working width - 74 in. (188.0 m)
Length - 47.75 in. (121.3 cm)
Roller chain - #60
Chain idler adjustment - Manual
Chute diameter - 12 in. (30.5 cm)
Auger diameter - 15 in. (38.1 cm)
Auger speed - 200 RPM
Impeller speed - 540 RPM
Impeller blades - 4
Impeller diameter - 24 in. (61.0 cm)
Tractor PTO speed - 540 RPM
Minimum tractor HP - 35 PTO HP
Maximum tractor HP - 50 PTO HP
Auger overload protection - Shearbolt
PTO overload protection - Shearbolt
Operating weight - 664 lb. (301.2 kg)
Shipping weight - 666 lb. (302.1 kg)

John Deere 4720 Blade

84-inch Rear Blade Specifications

Model - Frontier RB5084
Blade Type - Rear Mount
Compatibility - JD 4720
Width in working position, ft.(m) - 7 (2.13)
Moldboard length, in.(cm) - 84 (213.36)
Moldboard height, in. (cm) - 14.5 (36.83)
Moldboard thickness, in. (cm) - 0.250 (0.635)
Weight Machine, lb (kg) - 348 (157.85)
PTO hp - 20-60 Max
Pivot angle degrees - 360
Angle forward, number of positions - 5 Positions
Angle reverse, number of positions - 5 Positions
Tilt positions/degrees - 7 degrees either direction
Offset position left or right, in. (cm) - 12 (30.48)
Hitch Type - Cat. 1
Quick-Hitch Compatibility - Yes
Reversible cutting edge, thickness, in. (cm) - 0.375 (0.9525)
Reversible cutting edge, height, in. (cm) - 6 (15.24)

John Deere 4720 Mower and Rotary Cutter

25A Flail Mower Specifications

Model - 25A Flail Mower
Hitch Type - Three-point hitch category 1,2
Compatibility - JD 4720
Cutting Width - 198 cm (78 in.)
Cutting Height - 1,3-12,7 cm (0.5 in. to 5.0 in.)
Overall Width - 222 cm (87.5 in.)
Overall Length - 91,4 cm (36 in.)
Overall Height - 99 cm (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 - 0.9L (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 - 11,5 cm (4.50 in.)
Rotor Diameter (Flail Tips) - 44 cm (17.25 in.)
Rotor Speed - 1850 rpm
Rotation - Forward
Bearing Diameter - 35 mm (1.375 in.)
Gauge Roller Tube Outer Diameter - 14 cm (5.50 in.)
Bearing Diameter - 2,9 cm (1.125 in.)
Weight (approx.) - 286 kg (630 lb)

Detaching 25A Flail Mower From Tractor - Park mower on a level surface. Make sure tractor load/depth control is set for no sensitivity to "position" control. Slowly push hitch control lever to lower mower to the ground. Engage tractor parking brake and place transmission in "Park". Shut off tractor engine and remove key. Disconnect PTO driveline shield chain. Raise tractor PTO shield, if equipped. Support driveline, cradling it in your hand. Pull back locking collar and slide driveline off tractor shaft. Lower tractor PTO shield, if equipped. Tractor with Three-Point Hitch: Remove hitch pin assemblies from tractor draft and center links. Lower tractor draft links. Reinstall mower hitch pin assemblies. Carefully drive tractor away.

72-inch Mower Specifications

Model - 72" 7-Iron Mid-Mount Mower
Width of Cut - 72.8 in. (1849 mm)
Width - 85 in. (2159 mm)
Length - 41.7 in. (1060 mm)
Height - 17.1 in. (435 mm)
Minimum Cutting Height - 1 in. (25 mm)
Blades - 3
Gauge Wheels - Polyolefin
Spindles - 1.00 in. (25.4 mm)
Net Weight - 331 Ib. (150 kg)

MX8 Rotary Cutter Specifications

Model - MX8 Rotary Cutter
Compatibility - JD 4720
Cutting Width - 96 in. (2450 mm)
Cutting Height - 1 to 12 in. (25 to 305 mm)
Overall Width - 102 in. (2580 mm)
Overall Length Lift-Type - 111 in. (2810 mm)
Deck Shape - Domed
Deck Type - Double
Deck Thickness:
Upper Deck Thickness - 1/8 in. (3 mm) (11 gauge)
Lower Deck Thickness - 1/8 in. (3 mm) (11 gauge)
Total Thickness - 1/4 in. (6 mm)
Skirt Thickness - 3/16 in. (4.5 mm)
Driveline Size - Cat. 4
Driveline Protection (Tractor to Center Gearcase) - Non-seize self-adjusting
Center (Continuous) Gearcase Power Rating - 80 hp (60 kW)
Blade Holder, Diameter (Blade Holes) - Round pan, 18.1 in. (460 mm)
Blades - Suction (1/2 x3 in.)
Blade Tip Speed 540 RPM PTO - 15,739 ft/min (80 m/s)
Brush Cutting Capacity - 2 in. (50 mm)
Lift-Type Hitch Category - 2, 3N with or without quick coupler
Minimum Tractor PTO Power (Lift-Type) - 4 cyl. 5000 Series or equivalent
Minimum Tractor PTO Power (Pull-Type) - 40 hp (30 kW)
Minimum Tractor PTO Power (Semi-Mount) - 40 hp (30 kW)
Weight Lift-Type - 1,540 lb. (700 kg)
Weight Pull-Type - 1,597 lb. (724 kg)
Weight Semi-Mount - 1,422 lb. (647 kg)
Weight Semi-Mount Hydraulic Offset - 1,465 lb. (666 kg)

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