International Harvester

International Harvester 1086

The International Harvester 1086 is a row-crop tractor produced from 1976 to 1981 as part of the 86 Series. Built in Rock Island, Illinois, USA, it features a powerful 6.8L 6-cylinder turbocharged diesel engine and offers two transmission options including an 8-speed gear and a 16-speed two-speed power shift with Torque Amplifier. The tractor is available in two- or four-wheel drive with mechanical rear differential lock optional. It has a fuel capacity of 63 gallons main and 22 gallons auxiliary, and a hydraulic system capacity of 22.5 gallons. The 1086 includes a standard cab with air-conditioning, with open operator station and four-post ROPS available. It has a rear independent PTO with 540/1000 RPM options and a rear Type III hitch. Dimensions vary by configuration, with wheelbase ranging from 99 to 106 inches and weight from 12,300 to 13,030 pounds depending on model variant. The 1086 was highly regarded for its power and versatility in farming applications.
Power144 hp[P]
Founded1976 - 1981
Model1086

Technical Specifications

Detailed specifications and technical data for International Harvester 1086

Power
PTO (tested)131.41 hp (98.0 kW)
PTO (claimed)130 hp (96.9 kW)
Drawbar (tested)113.04 hp (84.3 kW)
Drawbar (claimed)114 hp (85.0 kW)
Tires
Ag rear18.4-38
Ag front10.00-16 (2WD), 13.6-24 (4WD)
Engine
Typeturbocharged diesel
ModelInternational Harvester DT-414
Coolingliquid-cooled
Cylinders6-cylinder
Rated RPM2400
Air cleanerdual dry element
Bore/Stroke4.30x4.75 inches (109 x 121 mm)
Displacement414 ci (6.8 L)
Oil capacity20 qts (18.9 L)
Coolant capacity25 qts (23.7 L)
Weight
Shipping12,300 lbs (5579 kg), 13,030 lbs (Hi-Clear) (5910 kg)
Operating12,715 lbs (2WD) (5767 kg)
Capacity
Fuel63 gal (main) (238.5 L), 22 gal (auxilary) (83.3 L)
Hydraulic system22.5 gal (85.2 L)
Variants
1086 Hi-Clearhigh clearance
Dimensions
Width102 inches (259 cm), 98 inches (Hi-Clear) (248 cm)
Length168 inches (2WD) (426 cm), 165 inches (4WD) (419 cm), 169 inches (Hi-Clear) (429 cm)
Wheelbase105 inches (wide-tread front) (266 cm), 101 inches (tricycle front) (256 cm), 99 inches (4WD) (251 cm), 106 inches (Hi-Clear) (269 cm)
Height (cab)115 inches (292 cm), 126 inches (Hi-Clear) (320 cm)
Ground clearance13 inches (33 cm), 26 inches (Hi-Clear) (66 cm)
Electrical
Groundnegative
Batteries2
Battery CCA470
Battery volts12
Charging amps42, 61 (with cab)
Charging systemalternator
Hydraulics
Typeopen center, closed center Optional after late 1980.
Valves2
Capacity22.5 gal (85.2 L)
Pump flow12 gpm (45.4 lpm)
Mechanical
Cabstandard with air-conditioning. Open operator station and four-post ROPS available.
DriveTwo- or four-wheel drive
BrakesHydraulic disc brakes
Steeringpower assist
Final drivesbull gear
Differential lockmechanical rear Optional
Production
TypeRow-Crop tractor
Series86 Series
Built inRock Island, Illinois, USA
Total built47,420
Original price$35,700 (1981)
Years produced1976 - 1981
Transmission
Typegear
Gears8 forward and 4 reverse
NotesThe transmission features three ranges (low, high, and reverse) with four gears (1-4) in each range. The range and gear can be shifted only when the tractor is stopped. The Torque Amplifier (TA) provides an additional high/low selection for each speed. The TA can be shifted while the tractor is in motion.
Options8-speed gear, 16-speed two-speed power shift
Oil typeIH Hy-Tran/B-6
Oil capacity90 qts (85.2 L)
Torque Amplifiertwo-speed power shift
Torque Amplifier Gears16 forward and 8 reverse
Tractor hitch
Rear TypeIII
Power Take-off (PTO)
Rear PTOindependent
Engine RPM540@2100, 1000@2100
Rear PTO Type540/1000 (1.375)