Compare/International Harvester Hydro 70 vs International Harvester TD-18A

International Harvester Hydro 70 vs International Harvester TD-18A

Verdict: International Harvester Hydro 70 vs International Harvester TD-18A

The International Harvester Hydro 70 and the International Harvester TD-18A are both tractors — here is how they stack up on the figures that matter. International Harvester Hydro 70 leads on rated power with 90 hp against 87 hp. International Harvester Hydro 70 is the lighter machine (7,450 kg vs 22,830 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. International Harvester Hydro 70 is the newer design (1973 vs 1949). In short: choose the International Harvester Hydro 70 for outright pulling power, or the International Harvester TD-18A if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

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Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

International Harvester

Fit score

Best match

Clear

International Harvester

Fit score

Clear

Rated power

90 hp

87 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

International HarvesterReference

Diesel hydrostatic 2WDNovember 14 - December 3, 1973Link: Nebraska Tractor Test 1155 fileReference

Gear 1 used for pull test.Reference

Original price

$14,200Reference

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Total built

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22,016Reference

Drive

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crawlerReference

Steering

—

mechanical steering clutchesReference

Engine

Engine (gross)

67.1 kWReference

—

Drawbar (claimed)

40.3 kWReference

64.9 kWReference

Drawbar (tested)

40.2 kWReference

63.8 kWReference

Displacement

5.1 LReference

11.3 LReference

Bore/Stroke

98 x 112 mmReference

121 x 165 mmReference

Power (gross)

67.1 kWReference

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Air cleaner

dual stage dryReference

oil bathReference

Compression

17:1Reference

15.5:1Reference

Rated RPM

2400Reference

1350Reference

Idle RPM

900-2400Reference

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Starter volts

12Reference

Oil capacity

75.7 LReference

24.6 LReference

Coolant capacity

19.9 LReference

98.4 LReference

Power at rated engine speed

51.8 kWReference

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Max power

39.6 kWReference

63.8 kWReference

Fuel tank

—

227.1 LReference

Aux. fuel

—

5.0 LReference

Belt (claimed)

—

75.3 kWReference

Belt (tested)

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73.0 kWReference

Starter

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gasoline-startReference

Belt power (max)

—

73.0 kWReference

Transmission

Gears

infinite forward and reverse (2-range)Reference

6 forward and 2 reverseReference

PTO & Hydraulics

PTO (claimed)

51.5 kWReference

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PTO (tested)

51.9 kWReference

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Hydraulic system

75.7 LReference

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Type

hydrostaticReference

gearReference

Capacity

75.7 LReference

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Rear valves

2Reference

—

Pump flow

22.7 lpmReference

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Rear Type

IIReference

—

Rear PTO

independentReference

—

Rear PTO Type

540 (1.375)Reference

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Engine RPM

540@1986Reference

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Power at rated PTO speed

48.8 kWReference

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Capacities

Gas Fuel

124.9 LReference

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Diesel Fuel

117.3 LReference

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Dimensions

Wheelbase

261 cmReference

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Weight

7450 to 8200 poundsReference

22830 to 23630 poundsReference

Front tire

7.50-16Reference

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Rear tire

15.5-38Reference

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Ag front

7.50-16Reference

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Ag rear

15.5-38Reference

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Length

408 cmReference

421 cmReference

Width

220 cmReference

241 cmReference

Height (steering wheel)

195 cmReference

—

Height (exhaust)

264 cmReference

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Clearance (drawbar)

35 cmReference

—

Front tread

147 to 208 cmReference

—

Rear tread

142 to 274 cmReference

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Gas Shipping

3379 kgReference

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Diesel Shipping

3578 kgReference

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Operating

3719 kgReference

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Height

—

269 cmReference

Shipping weight

—

10718 kgReference

Hydro 70 Serial Number Location

Hydro 70 Serial Numbers

1973

7501Reference

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1974

7570Reference

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1975

8681Reference

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1976

10094Reference

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Electrical

Charging system

alternatorReference

—

Charging amps

37Reference

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Test results

Fuel use

20.1 l/hourReference

—

Max pull

3769 kgReference

9178 kgReference

Belt fuel use (max)

—

25.4 l/hourReference

TD-18A Serial Numbers

1949

—

22536 (TDR)Reference

1950

—

22837 (TDR)Reference

1951

—

24668 (TDR)Reference

1952

—

27245 (TDR)Reference

1953

—

29201 (TDR)Reference

1954

—

32089 (TDR)Reference

1955

—

33650 (TD181)Reference

1956

—

36101 (TD182)Reference

1957

—

37882 (TD182)Reference

1958

—

38805 (TD182)Reference

Location:

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upper-left dashReference

Final

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38861 (TD182)Reference

Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.