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Ford 1620 Tractor Specifications

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Complete specifications for the Ford 1620 compact tractor, transcribed from the specifications section of the factory operator's manual (42162010). Built from 1992 to 1995 by Shibaura in Japan as part of Ford's Twenty Compact Series, the 1620 sits between the 1520 and the 1720, with an 81.16 cu. in. three-cylinder diesel and 23.0 observed PTO horsepower. It uses a three-range hydrostatic transmission and was sold in two-wheel or four-wheel drive, and the figures below separate the two where the manual does.

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Engine

Type Diesel
Number of Cylinders 3
Bore 3.31 in. (8.4 cm)
Stroke 3.15 in. (8.0 cm)
Displacement 81.16 cu. in. (1330 cc)
Compression Ratio 23 : 11
Firing Order 1-2-3
Low Idle Speed 800–900 rpm
Maximum Speed — High Idle 2750–2800 rpm
Maximum Speed — Rated 2600 rpm
Valve Clearance (Cold) — Intake 0.008 in. (0.20 mm)
Valve Clearance (Cold) — Exhaust 0.008 in. (0.20 mm)

Capacities

Component U.S. Imperial Metric
Fuel Tank 7.1 gals. 5.9 gals. 27 liters
Cooling System 4.2 qts. 3.5 qts. 4.0 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 liters2
Rear Axle and Mechanical or H.S.T. Transmission (includes hydraulics) 23.3 qts. 19.3 qts. 22 liters3
Power Steering 1.9 qts. 1.6 qts. 1.8 liters
Front Axle Final Reduction and Differential Gear Case 3.2 qts. 2.6 qts. 3.0 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 (10–15 mm) when 20–25 lbs. (9–11 kg) thumb force is applied midway between pulleys4
Fan Diameter 13.4 in. (34.0 cm)
Thermostat — Start to Open 160°F (71°C)
Thermostat — Fully Open 185°F (85°C)
Radiator Cap 13 psi (0.9 bar)

Electrical System

Alternator 12-volt, heavy duty, 35 amps (IC regulator built-in)
Battery 12-volt, 70 amp. hour rating with negative ground
Starting Motor Magnetic shift 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 8.46 in. (21.5 cm) dry disc, metallic face
Pedal Free-Travel 3/4–1-3/16 in. (19–30 mm)

Brakes

Type Wet disc
Disc 2 6.1 in. × 4.8 in. diameter (15.5 cm × 12.3 cm)5

Steering

Type Full hydraulic power
Turns Lock-to-Lock 2.5
Front Wheel Toe-In 0–13/64 in. (0–5 mm)
Turning Radius (without brake) — Two Wheel Drive 8.69 ft. (265 cm)6
Turning Radius (without brake) — Four Wheel Drive 9.38 ft. (286 cm)6

Power Take-Off

Type Transmission
Shaft 1-3/8 in. (3.49 cm), 6 spline SAE STD
Engine Speed for 540 rpm PTO Operation 2465 rpm
Optional Mid PTO Speed 2000 ± 10 rpm, at 2420 rpm engine speed7
Horsepower PTO — Observed 23.0

Hydraulic Lift System

Type Live, Category 1 three-point linkage
Pump Type Gear
Pump Capacity 6.87 U.S. gpm (5.72 Imp. gpm, 26.0 liters per minute) at 2133 psi (147 bar) at 2500 rpm
System Relief Valve Setting 2133 psi (147 bar)

Tires

Position Two Wheel Drive Four Wheel Drive
Front — Standard (AG) 5.50-16, F2, 4PR 7-14, 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 (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 43–54 lbs. ft. (58–73 N·m) 68.6–86.7 lbs. ft. (93–117 N·m)
Rear Wheel — Disc-to-Rim 137–159 lbs. ft. (186–215 N·m) — Two & Four Wheel Drive
Rear Wheel — Disc-to-Axle 137–159 lbs. ft. (186–215 N·m) — Two & Four Wheel Drive
ROPS to Fender (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
(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 (mechanical and hydrostatic transmission) 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 its page 31, and that engine crankcase oil drain intervals should be adjusted downward when diesel fuel sulfur content is over 0.5%.

General Dimensions

Dimension Two Wheel Drive Four Wheel Drive
Length 111.4 in. (283.0 cm) — Two & Four Wheel Drive
Wheelbase 63 in. (160.0 cm) — Two & Four Wheel Drive
Height — Top of Steering Wheel 56.7 in. (144 cm) 55.9 in. (142 cm)
Height — Top of ROPS 85.4 in. (217 cm) — Two & Four Wheel Drive
Height — Top of Vertical Exhaust 79.7 in. (202.5 cm) 79.3 in. (201.5 cm)
Width 53.5 in. (136.0 cm) 52.6 in. (133.5 cm)
Minimum Ground Clearance 12.8 in. (32.5 cm) 12.0 in. (30.5 cm)
Adjustable Wheel Tread — Front 40.2–50.1 in. (102–127.5 cm) 42.5 in. (108.0 cm)
Adjustable Wheel Tread — Rear 39.3–53.0 in. (99.8–134.5 cm) 41.1 in. (104.5 cm)8
Weight with ROPS (less options) 2260 lbs. (1025 kg) 2370 lbs. (1075 kg)

Ground Speeds

Hydrostatic transmission, from 1300–2600 rpm engine speed with 11.2 × 24 rear tires. Speed is continuously variable from zero to the figure shown in each range.9

Range At 1300 rpm (mph) At 2600 rpm (mph)
Forward
Low (“L”) 1.7 3.4
Middle (“M”) 3.5 7.0
High (“H”) 6.7 13.4
Reverse
Low (“RL”) 1.15 2.3
Middle (“RM”) 2.45 4.9
High (“RH”) 4.7 9.4

Notes:
1 TractorData lists a 22:1 compression ratio for the 1620. The manual prints 23 : 1, which is what is shown here.
2 On the printed page the “4.5 Liters” figure sits on the same line as the “Rear Axle and Mechanical” label, but 4.8 U.S. qts. is about 4.5 liters, so it belongs to the crankcase with filter change. It is shown there.
3 The capacity line reads “Rear Axle and Mechanical or H.S.T. Transmission”, and the lubricant table also names a mechanical transmission. The rest of the manual, including the controls section, the ground speed chart and TractorData's listing, describes the 1620 with the hydrostatic transmission only. The wording is transcribed as printed.
4 The belt deflection is printed as “7/16 to 9/16 (10-15 mm)” with no unit on the first figure. 10–15 mm is about 0.39–0.59 in., consistent with inches. Transcribed as printed.
5 Printed as “Disc 2 … 6.1 in × 4.8 in. Diameter (15.5 cm × 12.3 cm)”. This most likely means two discs, with outside and inside diameters of 6.1 and 4.8 in., but the manual does not say so. Transcribed as printed.
6 These turning radius figures are identical to those printed in the Ford 1220 manual, although the 1620's wheelbase is about 8 in. longer. Transcribed as printed. Verify against a second source before relying on them.
7 The mid PTO figures are from the Power Take-Off section of the operating instructions (page 16), not the specifications pages.
8 The four-wheel drive rear tread is printed as a single figure, where the two-wheel drive tractor gets a range. Transcribed as printed.
9 The manual presents ground speeds as a bar chart rather than a table. The values above are the endpoint figures printed on that chart at 1300 and 2600 rpm, transcribed rather than measured from the graph. The 2600 rpm maximums agree with the Hydrostatic Transmission Controls section (page 10).
All specifications transcribed from the Ford 1620 operator's manual, publication 42162010, originally published by Ford New Holland. Production years, builder, series and engine model are from TractorData and are not printed in the manual. Ford New Holland 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: 42162010

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