Compare/International Harvester 685 vs International Harvester TD-18

International Harvester 685 vs International Harvester TD-18

Verdict: International Harvester 685 vs International Harvester TD-18

The International Harvester 685 and the International Harvester TD-18 are both tractors — here is how they stack up on the figures that matter. Both are rated at the same 72 hp. International Harvester 685 is the lighter machine (6,703 kg vs 9,752 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. International Harvester TD-18 holds more fuel (227.1 L vs 112.0 L) for longer stints between fills. International Harvester 685 is the newer design (1981 vs 1938). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.

Tune the fit score

Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

International Harvester

Fit score

Best match

Clear

International Harvester

Fit score

Best match

Clear

Rated power

72 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

International HarvesterReference

Four gears (1-4) in two ranges (low/high) plus reverse range.Reference

Gear 1 used for pull test.Reference

Differential lock

mechanical rearReference

—

Total built

—

22,016Reference

Drive

—

crawlerReference

Engine

Fuel tank

112.0 LReference

227.1 LReference

Engine (gross)

53.5 kWReference

—

Engine (net)

51.5 kWReference

—

Displacement

3.9 LReference

11.3 LReference

Bore/Stroke

98 x 129 mmReference

121 x 165 mmReference

Power (net)

51.5 kWReference

—

Power (gross)

53.5 kWReference

—

Fuel system

direct injectionReference

—

Rated RPM

2300Reference

1200Reference

Torque

244.1 NmReference

—

Torque RPM

1600Reference

—

Starter

electricReference

gasoline startReference

Starter volts

12Reference

Aux. fuel

—

5.0 LReference

Drawbar (tested)

—

54.0 kWReference

Belt (tested)

—

59.9 kWReference

Air cleaner

—

oil bathReference

Coolant capacity

—

98.4 LReference

Belt power (max)

—

59.9 kWReference

Max power

—

54.0 kWReference

Transmission

Type

two-speed power shiftReference

gearReference

Gears

16 forward and 8 reverseReference

6 forward and 2 reverseReference

Transmission

Torque AmplifierReference

—

PTO & Hydraulics

PTO (claimed)

47.2 kWReference

—

Pump flow

46.9 lpmReference

—

Rear Type

IIReference

—

Control

position and draft controlReference

—

Rear lift

2381 kgReference

—

Rear PTO

independentReference

—

Clutch

hydraulic wet discReference

dry discReference

Rear PTO Type

540/1000Reference

—

Dimensions

Wheelbase

224 cmReference

—

Weight

6703 to 7188 poundsReference

9752 kgReference

Front tire

10.00-16Reference

—

Rear tire

16.9-34Reference

—

Ag front

12.4-24 (4WD)Reference

—

Ag rear

16.9-34Reference

—

Length

374 cmReference

421 cmReference

Height

264 cmReference

269 cmReference

2WD Weight

3040 kgReference

—

4WD Weight

3260 kgReference

—

Width

—

241 cmReference

685 Serial Numbers

Location:

Serial number plate on right front of tractor frame, above the front axle.Reference

upper-left dashReference

Electrical

Ground

negativeReference

—

Battery volts

12Reference

—

TD-18 Serial Numbers

1938

—

501Reference

1939

—

520Reference

1940

—

1240Reference

1941

—

2174Reference

1942

—

3607Reference

1943

—

5804Reference

1944

—

6899Reference

1945

—

9011Reference

1946

—

11092Reference

1947

—

12644Reference

1948

—

14626Reference

1949

—

16708Reference

Final

—

22535Reference

Test results

Belt fuel use (max)

—

19.7 l/hourReference

Max pull

—

8606 kgReference

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.