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Tractor · 1981Unverified

International Harvester 6588

International Harvester 6588 — 60 2+2 Series · 150 hp. Reference specifications; pending source verification.

The International Harvester 6588 is a high-powered tractor model, rated at 150 hp, which positions it among the more powerful machines in its class. Manufactured from 1981 to 1984, this tractor features a 6-cylinder turbocharged diesel liquid-cooled engine, coupled with a hydrostatic transmission and four-wheel drive. The listed weight of the 6588 is 7402 kg, and it is suited to handling areas of 200–800 acres.

Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.

Rated power
150 hp
Max power
94.1 kW
Weight
7402 kg

Catalogue coverage

Variants represented
2
Richest spec table
74 rows
Recorded power
150 hp
Recorded weight
7402 kg
Transmissions
16-speed two-range power shift
Production years
1981-1984
Verified variants
0

No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.

Hover a source tag to verify

Overview

ManufacturerInternational HarvesterReference
Total built642Reference
Original price was $65,100 in 1984Reference
Four-wheel driveReference
Steeringarticulated hydrostatic powerReference
Cab standard with burgundy finish, heat, and A/C. Optional wester finish interior.Reference

Engine

International Harvester 7.6L 6-cyl dieselReference
Engine132.0 kWReference
Drawbar (claimed)96.9 kWReference
Drawbar (tested)94.1 kWReference
International Harvester DT 466BReference
turbocharged dieselReference
6-cylinderReference
liquid-cooledReference
Displacement7.6 LReference
Bore/Stroke109 x 136 mmReference
Power132.0 kWReference
Rated RPM2400Reference
Starter volts12Reference
Oil capacity18.9 LReference
Coolant capacity32.2 LReference
Power at rated engine speed112.2 kWReference
Max power94.1 kWReference

Transmission

16-speed two-range power shiftReference
Typetwo-range power shiftReference
Gears16 forward and 8 reverseReference
Oil capacity89.4 LReference
Left lever selects high, low, or reverse range. Right lever selects gear. On-the-move powershift without the clutch between gear pairs 1/2, 3/4, 5/6, and 7/8. Synchronized shift (with the clutch) from 2-to-3, 4-to-5, and 6-to-7.Reference

PTO & Hydraulics

PTO (claimed)111.9 kWReference
PTO (tested)112.2 kWReference
Hydraulic system89.3 LReference
Typeclosed centerReference
Capacity89.3 LReference
Valves2 to 4Reference
Pump flow68.1 lpmReference
Steering flow45.4 lpmReference
Rear TypeIII/IIReference
Rear PTOindependentReference
Rear PTO Type1000Reference
Power at rated PTO speed113.4 kWReference

Capacities

Fuel336.9 LReference
Fuel526.1 LReference

Dimensions

Wheelbase279 cmReference
Weight7402 kgReference
Front tire18.4-38Reference
Rear tire18.4-38Reference
Ag front18.4-38Reference
Ag rear18.4-38Reference
Length579 cmReference
Width258 cmReference
Shipping weight7402 kgReference
Ground clearance72 cmReference
Bar rear axle82 mmReference

6588 Serial Numbers

Location:transmission housing, right sideReference
19818801Reference
19828966Reference
19839164Reference
19849361Reference
19859526Reference
FAQ: How to read a serial number table.Reference

Electrical

GroundnegativeReference
Battery volts12Reference

International Harvester 6588 Height

Hood202 cmReference
Cab289 cmReference
Exhaust318 cmReference

Test results

Diesel 16-speed 4WDAugust 22 - 29, 1979Link: Nebraska Tractor Test 1320 fileReference
PTO performanceReference
Fuel use36.3 l/hourReference
Fuel use34.1 l/hourReference
Drawbar performanceReference
Gear 4LoDD used for power test.Reference
Max pull7978 kgReference
Gear 1LoDD used for pull test.Reference

Speeds

With 18.4-34 tires.Reference

Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.

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