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Tractor · 1991Unverified

AGCO Allis 6690

Name: AGCO Allis 6690
Brand: AGCO Allis

AGCO Allis 6690 — Utility tractor · 81 hp. Reference specifications; pending source verification.

The AGCO Allis 6690 is a tractor with a rated output of 81 hp, placing it in the middle of its class in terms of power. It was manufactured from 1991 to 1997. The tractor features a 4-cylinder turbocharged diesel air-cooled engine, transmitting power to all four wheels via a powershift transmission. Its listed weight ranges from 6724 to 7385 pounds, and it is suited to tasks on areas of approximately 200 acres.

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

Rated power

81 hp

Max power

51.1 kW

Weight

6724 to 7385 pounds

Catalogue coverage

Variants represented

Richest spec table

94 rows

Recorded power

81 hp

Transmissions

12-speed synchromesh

Production years

1991-1997

Verified variants

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

Hover a source tag to verify

Overview

DistributorAGCO AllisReference

ManufacturerSAMEReference

Utility tractorReference

Built in ItalyReference

Original price was $35,000 in 1997Reference

Two- or four-wheel driveReference

Power steeringReference

Hydraulic wet disc brakesReference

Flat-deck with four-post ROPS. Cab optional with air-conditioning.Reference

Variants

Explorer II 90similar SAME modelReference

Engine

SLH 4.0L 4-cyl dieselReference

Engine64.8 kWReference

Drawbar (tested)51.1 kWReference

SLH 1000.4-ATReference

turbocharged dieselReference

4-cylinderReference

air-cooledReference

Displacement4.0 LReference

Bore/Stroke105 x 116 mmReference

Power64.8 kWReference

Air cleanerdry elementReference

Pre-heatingthermostartReference

Rated RPM2500Reference

Idle RPM650-2710Reference

Starter volts12Reference

Oil capacity8.7 LReference

Power at rated engine speed60.3 kWReference

Max power51.1 kWReference

Transmission

12-speed synchromeshReference

24-speedReference

16-speedReference

30-speed partial power shiftReference

TypesynchromeshReference

Gears12 forward and reverseReference

Clutch305mm dry discReference

Oil capacity57.7 LReference

Four synchronized gears in three ranges.Reference

Gears24 forward and 12 reverseReference

Gears16 forward and reverseReference

Typepartial power shiftReference

Gears30 forward and reverseReference

Five gears (1-5) in three ranges (L/M/H) with high-low power shift.Reference

PTO & Hydraulics

PTO (claimed)60.3 kWReference

PTO (tested)60.3 kWReference

Hydraulic system57.5 LReference

Typeopen centerReference

Capacity57.5 LReference

Valves2Reference

Pump flow42.5 lpmReference

Rear TypeII/IReference

Controlposition and draft control with lower-link sensingReference

Rear lift (at ends)3079 kgReference

Rear PTOindependentReference

Clutch124.5mm hydraulic wet discReference

Rear PTO Type540/1000 (1.375)Reference

Engine RPM540@2200Reference

Engine RPM1000@2450Reference

Capacities

Fuel107.0 LReference

2WD Max capacity5200 kgReference

4WD Max capacity5450 kgReference

Dimensions

2WD Wheelbase244 cmReference

4WD Wheelbase235 cmReference

Weight6724 to 7385 poundsReference

Front tire7.50-18Reference

Rear tire16.9R34 (2WD)Reference

Standard tires (ag)Front: 7.50-18. Rear: 16.9R34 (2WD)Reference

Standard tires (ag)Front: 14.9R24. Rear: 16.9R34 (4WD)Reference

Length408 cmReference

Width209 cmReference

Height282 cmReference

Ground clearance44 cmReference

Flange rear axleReference

2WD Shipping3050 kgReference

4WD Shipping3349 kgReference

6690 Serial Numbers

Location:Console, right sideReference

19911001Reference

19921427Reference

19931506Reference

19941669Reference

19951888Reference

19962010Reference

19972131Reference

FAQ: How to read a serial number table.Reference

Electrical

GroundnegativeReference

Charging systemalternatorReference

Charging amps55Reference

Battery volts12Reference

Battery AH100Reference

Test results

Diesel 12-speed 5/1987Link: OCED Tractor Test 1080 fileReference

PTO performanceReference

Fuel use17.8 l/hourReference

Drawbar performanceReference

Fuel use20.1 l/hourReference

Speeds

With 16.9R34 rear 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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