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Ford 1720 Tractor Specifications

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Complete specifications for the Ford 1720 compact utility tractor, transcribed from the specifications section of the factory operator's manual (SE 4595). The 1720 uses a three-cylinder Shibaura diesel of 91.29 cu. in. and sits above the 1320 in Ford's 20-series compact range. Both two-wheel and four-wheel drive figures are given below, along with ground speeds for the standard twelve-speed transmission and the optional Synchromesh Shuttle.

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Engine

Type Diesel
Number of Cylinders 3
Bore 3.31 in. (8.4 cm)
Stroke 3.54 in. (9.0 cm)
Displacement 91.29 cu. in. (1496 cc)
Compression Ratio 22 : 1
Firing Order 1-2-3
Low Idle Speed 800–900 rpm
Maximum Speed — High Idle 2650–2700 rpm
Maximum Speed — Rated 2500 rpm
Valve Clearance (Cold) — Intake 0.008 in. (0.2 mm)
Valve Clearance (Cold) — Exhaust 0.008 in. (0.2 mm)

Capacities

Component U.S. Imperial Metric
Fuel Tank 8.5 gals. 7.0 gals. 32.0 liters
Cooling System 5.9 qts. 4.9 qts. 5.6 liters
Engine Crankcase — Less Filter 4.2 qts. 3.5 qts. 4.0 liters
Engine Crankcase — With Filter Change 4.8 qts. 4.0 qts. 4.5 liters
Rear Axle and Transmission (includes hydraulics) 28.5 qts. 23.7 qts. 27 liters
Power Steering 1.9 qts. 1.6 qts. 1.8 liters
Front Axle Differential Case and Final Reduction 5.3 qts. 4.4 qts. 5.0 liters

Cooling System

Type Pressurized liquid with recirculating bypass
Water Pump — Type Centrifugal
Water Pump — Drive V-belt
Water Pump Belt Deflection 7/16 to 9/16 in. (10–15 mm) when 20–25 lbs. (9–11 kg) thumb force is applied midway between pulleys
Fan Diameter 13.4 in. (34 cm)
Thermostat — Starts to Open 160°F (71°C)
Thermostat — Fully Open 185°F (85°C)
Radiator Cap 12.8 psi (0.88 bar)

Electrical System

Alternator 12-volt, heavy duty, 35 amps
Regulator (Alternator) IC regulator built in
Battery 12-volt, 70 amp. hour rating with negative ground
Starting Motor Solenoid, pre-engaged, reduction

Fuel System

Fuel Temperature Type
Diesel Above 20°F (−6.7°C) No. 2D, cetane rating min. 40
Diesel Below 20°F (−6.7°C) No. 1D, cetane rating min. 40
Injection Pump — Type In-line
Injection Pump — Timing 22.5° BTDC

Clutch

Type 8.86 in. (22.5 cm) dry disc, organic face
Pedal Free-Travel 3/4–1-3/16 in. (19–30 mm)

Brakes

Type Wet disc
Disc 3 6.9 in. × 5.6 in. diameter (17.5 cm × 14.3 cm)

Steering

Type Hydrostatic
Turns Lock-to-Lock 3.8
Front Wheel Toe-In 0–13/64 in. (0–5 mm)
Turning Radius (without brake) — Two Wheel Drive 8.76 ft. (267 cm)
Turning Radius (without brake) — Four Wheel Drive 10.5 ft. (320 cm)

Power Take-Off

Type Transmission
Shaft 1-3/8 in. (3.49 cm), 6 spline SAE STD
Engine Speed for 540 rpm PTO Operation 2238 rpm
Horsepower PTO — Observed 23.5

Hydraulic Lift System

Type Live, Category 1 three-point linkage
Pump Type Gear
Pump Capacity 7.8 U.S. gpm (6.5 Imp. gpm) at 2133 psi at 2500 rpm (29.6 liters at 147 bar at 2500 rpm)
System Relief Valve Setting 2133 psi (147 bar)

Tires

Position Two Wheel Drive Four Wheel Drive
Front — Standard (AG) 5.00-15, F2, 4PR 7-14 R1, 4PR
Front — Optional (AG) 5.50-16, F2, 4PR 7-16 R1, 4PR
Front — Optional (Turf) 23-8.50-12, 4PR 25-8.50-14, 4PR
Rear — Standard (AG) 11.2 × 24, R1, 4PR — Two & Four Wheel Drive
Rear — Optional (AG) 12.4 × 24, R1, 4PR — Two & Four Wheel Drive
Rear — Optional (Turf) 13.6-16, R3, 4PR — Two & Four Wheel Drive

Wheel & ROPS Bolt Torques

Fastener Two Wheel Drive Four Wheel Drive
Front Wheel Disc-to-Hub 48–61 lb. ft. (66–83 N·m) 137–159 lbs. ft. (186–215 N·m)
Rear Wheel Disc-to-Rim 137–159 lbs. ft. (186–215 N·m)
Rear Wheel Disc-to-Axle 137–159 lbs. ft. (186–215 N·m)
ROPS to Fender Mount (M12) 55 lbs. ft. (74 N·m)
Seat Belt (M10) 37 lbs. ft. (50 N·m)

Cast Iron Weights

(3) Front End Weights 33 lbs. (15 kg) each
(2) Front Wheel Weights (two wheel drive only) 66 lbs. (30 kg) per wheel
(4) Rear Wheel Weights 66 lbs. (30 kg) each

Draw Bars

Extendible Standard
Swinging Optional

Lubricants

Tractor Component Lubricant Recommendation Ford Part No.
Engine Oil Ford Super Premium 1QM-2C 121-AMV (case, 24 qts. 15W-40); 1QM-2C 121-A10 (case, 24 qts. SAE 10W); 1QM-2C 121-A30 (case, 24 qts. SAE 30W)
Transmission, Rear Axle, Power Steering and Hydraulic System Oil Ford 134 1GM-134C (1 gal.); 5GM-134C (5 gal.)
Front Wheel Bearings and Lubrication Fittings M1C-137-B 1TM-1C-137-B (1 tube)
Front Axle Ford 134 1GM-134C (1 gal.); EOAZ-19580-E (5 gal.)

The manual notes that if the recommended engine oil is not readily available, a commercial oil may be used as shown on page 35 of the manual, and that engine crankcase oil drain intervals should be shortened when diesel fuel sulfur content is over 0.5%.1

General Dimensions

Dimension Two Wheel Drive Four Wheel Drive
Length 121.2 in. (308.0 cm) 121.2 in. (308.0 cm)
Wheelbase 65 in. (165.0 cm) 65 in. (165.0 cm)
Height — Top of Steering Wheel 57.8 in. (147.0 cm) 57.8 in. (147.0 cm)
Height — Top of ROPS 86 in. (218.5 cm) 86 in. (218.5 cm)
Height — Top of Vertical Exhaust 81.3 in. (206.5 cm) 81.1 in. (206.0 cm)
Width 59.3 in. (150.5 cm) 59.3 in. (150.5 cm)
Minimum Ground Clearance 11.8 in. (30.0 cm) 11.8 in. (30.0 cm)
Adjustable Wheel Tread — Front 43.5–57.5 in. (110.5–146 cm) 46.0 in. (117.0 cm)
Adjustable Wheel Tread — Rear 43.3–58.7 in. (111–149 cm) 43.3–58.7 in. (111–149 cm)
Weight with ROPS, less options 2491 lbs. (1130 kg) 2690 lbs. (1220 kg)

Ground Speeds

From 1250–2500 rpm engine speed, with 11.2 × 24 rear tires.2

Gear Position At 1250 rpm (mph) At 2500 rpm (mph)
Forward
1st 0.4 0.8
2nd 0.5 1.0
3rd 0.6 1.2
4th 0.9 1.7
5th 1.2 2.3
6th 1.5 2.9
7th 1.9 3.9
8th 2.6 5.1
9th 3.2 6.4
10th 3.9 7.7
11th 5.1 10.2
12th 6.4 12.8
Reverse
R1 0.5 1.1
R2 1.3 2.5
R3 2.8 5.5
R4 5.5 11.1

Ground Speeds — Synchromesh Shuttle

From 1250–2500 rpm engine speed, with 11.2 × 24 rear tires.2

Gear Position At 1250 rpm (mph) At 2500 rpm (mph)
Forward
1st 0.4 0.8
2nd 0.6 1.1
3rd 0.7 1.3
4th 0.9 1.8
5th 1.2 2.3
6th 1.5 2.9
7th 1.8 3.6
8th 2.4 4.8
9th 3.0 6.0
10th 3.8 7.6
11th 4.7 9.4
12th 6.3 12.5
Reverse
R1st 0.5 0.9
R2nd 0.6 1.2
R3rd 0.8 1.5
R4th 1.0 2.0
R5th 1.3 2.6
R6th 1.6 3.2
R7th 2.1 4.1
R8th 2.7 5.4
R9th 3.3 6.6
R10th 4.3 8.5
R11th 5.3 10.6
R12th 7.0 14.0

Notes:
1 The manual prints “sulfer” in this note; spelling normalised. Page references are to the operator's manual, not to this page.
2 The manual presents ground speeds as bar charts rather than tables. The values above are the endpoint figures printed on those charts at 1250 and 2500 rpm — they are transcribed, not measured from the graphs.
All specifications transcribed from the specifications section of the Ford 1720 operator's manual, manual code SE 4595, originally published by Ford New Holland, Inc. Ford reserved the right to change specifications without notice; verify against your tractor's serial number before ordering parts or setting clearances.

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Manual code: SE 4595

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