Oliver 990 tractor specifications

1958 - 1961

1958 - 1961 900 SeriesStandard-tread tractor

Series:

Series:950 ← 990 → 995

1958 - 1961

900 Series

Standard-tread tractor

Production

Production
Manufacturer:	Oliver
Type:	Standard-tread tractor
Factory:	Charles City, Iowa, USA
Original price:	$5,900 (1961)

Oliver 950 Power

Oliver 950 Power
Drawbar (claimed):	48.7 hp 36.3 kW
PTO (claimed):	59.75 hp 44.6 kW
Plows:	5-6
Drawbar (tested):	48.76 hp 36.4 kW
Belt (tested):	67.23 hp 50.1 kW
power test details ...

Oliver 950 Engines

Oliver 950 Engines
Waukesha-Oliver 4.9L 6-cyl diesel
Waukesha-Oliver 4.9L 6-cyl gasoline
Engine details ...

Mechanical

Mechanical
Chassis:	4x2 2WD
Steering:	power
Brakes:	disc
Cab:	Open operator station.
Transmission:	6-speed gear
Transmission details ...

Power Take-off (PTO)

Power Take-off (PTO)
Rear PTO:	independent
Rear RPM:	540

Dimensions & Tires

Dimensions & Tires
Wheelbase:	79.875 inches 202 cm
Weight:	10400 lbs 4717 kg
Front tire:	7.50-18
Rear tire:	18-26
Full dimensions and tires ...

950 Serial Numbers

950 Serial Numbers
1958:	67828
1959:	71245
1960:	84487
1961:	110064
Final:	115469
how to read serial numbers...

Belt Pulley

Belt Pulley
Diameter:	12.25 inches 31 cm
Width:	9 inches 22 cm
RPM:	1021
Speed:	3277 ft/min 998.83 meters/min

Production

Production Manufacturer:Oliver
Type:Standard-tread tractor
Factory:Charles City, Iowa, USA
Original price:$8,200 (1961 )
The Oliver 990 was also sold as the Massey Ferguson 98 (with different sheet metal, paint, and seat).

Oliver 990 Power

Oliver 990 Power Drawbar (claimed):61.4 hp
45.8 kW
PTO (claimed):84.1 hp
62.7 kW
Plows:6
Drawbar (tested):61.46 hp
45.8 kW
Belt (tested):84.10 hp
62.7 kW
power test details ...

1958 - 1961

900 Series

Standard-tread tractor

Series:

950 ←

990

→ 995

Nebraska Tractor Test 661

Nebraska Tractor Test 661
Diesel 6-speed 2WD July 7 - 18, 1958 Link: Nebraska Tractor Test 661 file
Belt power (max):	84.10 hp 62.7 kW
Belt fuel use (max):	6.3 gal/hour 23.8 l/hour
Drawbar performance
Max power:	61.46 hp 45.8 kW
Fuel use:	5.0 gal/hour 18.9 l/hour
Gear 3 used for power test.
Max pull:	12629 lbs 5728 kg
Gear 1 used for pull test.

Oliver 990 Engine

Oliver 990 Engine General Motors 3.5L 3-cyl diesel Engine details ...

1958 - 1961

900 Series

Standard-tread tractor

Series:

950 ←

990

→ 995

Engine Detail

Engine Detail
General Motors 3-71
blower diesel
3-cylinder
liquid-cooled
two-cycle engine with mechanical blower
Displacement:	213 ci 3.5 L
Bore/Stroke:	4.25x5.00 inches 108 x 127 mm
Compression:	17:1
Rated RPM:	1800
Starter volts:	12