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International Harvester 86 series

12 models in this series

The 86 series from International Harvester comprises 12 models. Rated output ranges from 67 to 262 hp.

International Harvester 86 series (1976–1981) – 686 to 1586, Hydro 86 and 186, the articulated 4386 to 4786: the Control Center cab, DT-466, the 13-litre V8, 49 to 193 kW

The 86 series was International Harvester's tractor programme of the late 1970s – the successor to the 66s and the range with which IH introduced the Control Center cab in 1976: a sound-insulated cab mounted ahead of the rear axle with all-round view that reset the class standard. The type logic continues the 66s: 686 and 786 the mid-range, 886 to 1086 the 100 hp class, 1486 and 1586 the top models with the DT-436 and DT-466 six-cylinders, Hydro 86 and Hydro 186 the hydrostatic versions without gearbox. The 4386, 4586 and 4786 are the articulated four-wheel-drive tractors IH had built by Steiger in Fargo – the 4786 with a V8 diesel of 13,077 cm³ and about 350 hp the strongest IH of its time.

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The register lists 12 versions with 49.3 to 192.7 kW, 5,113 to 13,077 cm³ with six or eight cylinders, torque from 340 to 983 Nm, unladen weights from 3,704 to 13,699 kg, lengths from 4,115 to 6,121 mm, widths from 2,271 to 2,972 mm and heights from 2,667 to 3,404 mm; ten models run on diesel, two optionally on petrol.

With over 50,000 units the 1086 was IH's best-selling tractor of the range and with the DT-414 is regarded as one of the most durable; the 86s were the last big generation before the 50 series of 1981 and the crisis that led to Case IH in 1985.

On used tractors, engine and turbocharger, the Torque Amplifier transmission, hydraulics, the hydrostatic drive on Hydro models and the Control Center cab with its electrics count; parts are readily available in North America and through specialists in Europe.

Sources: SpecCodex register, model data: International Harvester 86er-Serie, International Harvester (Wikipedia)

Models compared

12 of 12 models.

	10861976–1979	14861976–1981	15861976–1981	43861976–1981	45861976–1981	47861978–1981	6861976–1980	7861980–1981	8861976–1981	9861976–1981	HYDRO-1861976–1981	HYDRO-861976–1980
Power	97.8 kW	106.6 kW	120 kW	126.5 kW	169.9 kW	192.7 kW	49.3 kW	59.6 kW	64.7 kW	78.7 kW	78 kW	53 kW
Rated speed	2,400 rpm	2,600 rpm	2,500 rpm	2,600 rpm	2,600 rpm	2,600 rpm	2,000 rpm	2,400 rpm	2,400 rpm	2,400 rpm	2,400 rpm	2,400 rpm
Cylinders	6	6	6	6	8	8	6	6	6	6	6	6
Displacement	6,782 cm³	7,139 cm³	7,139 cm³	7,639 cm³	13,077 cm³	13,077 cm³	5,113 cm³	5,871 cm³	5,897 cm³	7,139 cm³	7,139 cm³	5,113 cm³
Torque	530 Nm	550 Nm	618 Nm	–	983 Nm	–	–	340 Nm	–	427 Nm	427 Nm	–
Top speed	30 km/h	30 km/h	30 km/h	35 km/h	35 km/h	25 km/h	30 km/h	30 km/h	30 km/h	30 km/h	30 km/h	30 km/h
Wheelbase	2,662 mm	2,662 mm	2,662 mm	2,997 mm	2,997 mm	2,997 mm	2,616 mm	2,662 mm	2,662 mm	2,662 mm	2,662 mm	2,616 mm
Length	4,267 mm	4,267 mm	4,293 mm	6,121 mm	6,121 mm	6,121 mm	4,115 mm	4,191 mm	4,191 mm	4,242 mm	4,242 mm	4,115 mm
Width	2,591 mm	2,591 mm	2,591 mm	2,946 mm	2,946 mm	2,972 mm	2,271 mm	2,591 mm	2,591 mm	2,591 mm	2,591 mm	2,271 mm
Height	2,921 mm	2,921 mm	2,946 mm	3,251 mm	3,251 mm	3,404 mm	2,667 mm	2,845 mm	2,845 mm	2,845 mm	2,845 mm	2,667 mm
Unladen weight	5,772 kg	6,630 kg	6,858 kg	11,308 kg	11,680 kg	13,699 kg	3,719 kg	5,257 kg	5,325 kg	5,910 kg	5,958 kg	3,704 kg

International Harvester 86 series

International Harvester 86 series (1976–1981) – 686 to 1586, Hydro 86 and 186, the articulated 4386 to 4786: the Control Center cab, DT-466, the 13-litre V8, 49 to 193 kW

Models compared

Models

Tractor in 3D section

1086

1486

1586

4386

4586

4786

686

786

886

986

HYDRO-186

HYDRO-86