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Tractor · 1959Unverified

Oliver 660

Name: Oliver 660
Brand: Oliver

Oliver 660 — Row-Crop tractor · 41 hp. Reference specifications; pending source verification.

The Oliver 660 is a tractor with a rating of approximately 41 hp, positioning it towards the lighter end of its class. Manufactured from 1959 to 1964, it features a 4-cylinder diesel liquid-cooled engine paired with two-wheel drive and a 6-speed gearbox. The tractor's operating weight falls within the range of 3128 to 3178 pounds. It is capable of operating on areas of up to 200 acres.

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

Rated power

41 hp

Max power

20.9 kW

Weight

3128 to 3178 pounds

Catalogue coverage

Variants represented

Richest spec table

74 rows

Recorded power

41 hp

Recorded weight

1418 kg

Transmissions

6-speed unsynchronized gear

Production years

1959-1964

Verified variants

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

Hover a source tag to verify

Overview

ManufacturerOliverReference

Row-Crop tractorReference

Original price was $3,450 in 1964Reference

Two-wheel driveReference

Open operator station.Reference

Engine

Waukesha-Oliver 2.5L 4-cyl gasolineReference

Waukesha-Oliver 2.5L 4-cyl dieselReference

Plows3Reference

Drawbar (tested)20.9 kWReference

Belt (tested)25.1 kWReference

Waukesha-OliverReference

gasolineReference

4-cylinderReference

liquid-cooledReference

Displacement2.5 LReference

Bore/Stroke92 x 95 mmReference

Compression7.75:1Reference

Rated RPM2000Reference

Starter volts12Reference

Oil capacity3.8 LReference

Coolant capacity13.2 LReference

dieselReference

Compression16:1Reference

Belt power (max)25.1 kWReference

Max power20.9 kWReference

Belt power (max)25.1 kWReference

Max power20.5 kWReference

Transmission

6-speed unsynchronized gearReference

Typeunsynchronized gearReference

Gears6 forward and 2 reverseReference

Clutch235mm dry discReference

PTO & Hydraulics

PTO (claimed)30.6 kWReference

Hydraulic system36.0 LReference

Capacity36.0 LReference

Pump flow30.3 lpmReference

Rear PTOindependentReference

Rear PTO Type540Reference

Engine RPM533@1750Reference

Capacities

Fuel49.2 LReference

Dimensions

Wheelbase233 cmReference

Weight3128 to 3178 poundsReference

Front tire5.00-16Reference

Rear tire9-38Reference

Ag front5.00-16Reference

Ag rear9-38Reference

Ag front6.00-16Reference

Ag rear10-38Reference

Ag rear12.4-38Reference

Length341 cmReference

Width205 cmReference

Height221 cmReference

Gas Shipping weight1418 kgReference

Diesel Shipping weight1441 kgReference

Ground clearance61 cmReference

660 Serial Number Location

Bottom of dashboard below steering wheel.Reference

660 Serial Numbers

195973132Reference

196086166Reference

1961111213Reference

1962117873Reference

1963127356Reference

1964141160Reference

FAQ: How to read a serial number table.Reference

Test results

NTTL 541: gasoline 6-speed 2WDReference

NTTL 544: diesel 6-speed 2WDReference

Gasoline 6-speed 2WDMay 16 - 19, 1955Link: Nebraska Tractor Test 541 fileReference

Belt fuel use (max)11.7 l/hourReference

Drawbar performanceReference

Gear 4 used for power test.Reference

Max pull1954 kgReference

Gear 1 used for pull test.Reference

Diesel 6-speed 2WDMay 19 - 26, 1955Link: Nebraska Tractor Test 544 fileReference

Belt fuel use (max)9.1 l/hourReference

Max pull1992 kgReference

Speeds

With 9-38 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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