Ford 841 Powermaster

The Ford 841 Powermaster is a tractor produced by Ford. It is equipped with a 172 ci 2.8 L engine. The listed engine power is Gasoline (gross): 62.6 hp / 46.7 kW; Diesel (listed): 56.3 hp / 42.0 kW. Transmission: Sherman Step-Up Step-down. Operating weight: 2958 to 3487 pounds.

Overview

	1957 - 1961 801 Powermaster SeriesUtility tractor 801 Powermaster Series Utility tractor

Production
Manufacturer	Ford
Utility tractor
Built in Highland Park, Michigan, USA
Original price was $3,080 in 1957

Variants
941	row-crop chassis
811	Select-O-Speed, no PTO
821	Four-speed, no PTO or 3-point
841	Four-speed
851	Five-speed
861	Five speed, live PTO
871	Select-O-Speed
881	Select-O-Speed, dual-speed PTO

Ford 841 Power
Engine (gross)	62.6 hp 46.7 kW
Engine	56.3 hp 42.0 kW
Drawbar (claimed)	44 hp 32.8 kW
Belt (claimed)	50 hp 37.3 kW
Plows	3 *14-inch
Drawbar (tested)	41.44 hp 30.9 kW
Belt (tested)	44.71 hp 33.3 kW
Performance test details ...

Mechanical
Two-wheel drive
Steering	manual
	power assist optional
Differential mechanical expanding shoe brakes
Open operator station.

Capacity
Fuel	17 gal 64.3 L
Hydraulic system	2 gal 7.6 L

Hydraulics
Type	open center
Capacity	2 gal 7.6 L
Pressure	2000 psi 137.9 bar
Total flow	4 gpm 15.1 lpm

Tractor hitch
Rear Type	I
Rear lift	1250 lbs 567 kg

Power Take-off (PTO)
Rear PTO	transmission
Rear PTO Type	540

Dimensions & Tires
Wheelbase	74.5 inches 189 cm
Weight	2958 to 3487 pounds
Front tire	6.00-16
Rear tire	12-28
Full dimensions and tires ...

Electrical
Ground	positive (6V)
	negative (12V)
Charging system	generator
Charging amps	20
Battery volts	6 (gas/lp)
	12 (diesel)
Battery AH	80 (6V)
	135 (12V)

References
Tractors For Industrial Use published in 1958, by Ford
1955-1960 Tractor Shop Manual (SE-8175) published in 1961
Power Up with Ford published in 1957
Diesel Tractors published in 1959, by Ford
New Diesel Tractors published in 1958, by Ford
New Ford 801 Series Powermaster Tractors published in 1957
Ford Powermaster Tractors published in 1958
Ford Powermaster Tractors published in 1959

Engine

Engine options
Ford 2.8L 4-cyl gasoline
Ford 2.8L 4-cyl LP gas
Ford 2.8L 4-cyl diesel

Engine Detail — 172 ci / 2.8 L Gasoline

Manufacturer	Ford EAF
Fuel Type	Gasoline
Configuration	4-cylinder 8-valve, liquid-cooled vertical overhead valve
Displacement	172 ci 2.8 L
Bore/Stroke	3.90x3.60 inches 99 x 91 mm
Power (gross)	62.6 hp 46.7 kW
Air cleaner	oil bath
Compression	7.5:1
Rated RPM	2000
Torque	166 lb-ft 225.1 Nm
Torque RPM	1600
Firing order	1-2-4-3
Starter volts	6
Coolant capacity	15 qts 14.2 L
Sparkplug gap	0.027 inches 0.686 mm
Point gap	0.025 inches 0.635 mm
Intake valve clearance	0.015 inches (hot) 0.381 mm
Exhaust valve clearance	0.015 inches (hot) 0.381 mm
Oil capacity	5 qts 4.7 L
Oil change	100 h

Ford 841 Engine

Engine Detail — 172 ci / 2.8 L LP Gas

Manufacturer	Ford EAF
Fuel Type	LP gas
Configuration	4-cylinder 8-valve, liquid-cooled
Displacement	172 ci 2.8 L
Bore/Stroke	3.90x3.60 inches 99 x 91 mm
Air cleaner	oil bath
Compression	8.65:1
Rated RPM	2200
Firing order	1-2-4-3
Starter volts	6
Sparkplug gap	0.027 inches 0.686 mm
Point gap	0.025 inches 0.635 mm
Intake valve clearance	0.015 inches (hot) 0.381 mm
Exhaust valve clearance	0.015 inches (hot) 0.381 mm

Engine Detail — 172 ci / 2.8 L Diesel

Manufacturer	Ford
Fuel Type	Diesel
Configuration	4-cylinder 8-valve, liquid-cooled
Displacement	172 ci 2.8 L
Bore/Stroke	3.90x3.60 inches 99 x 91 mm
Power	56.3 hp 42.0 kW
Air cleaner	oil bath
Compression	16.8:1
Rated RPM	2200
Torque	140.4 lb-ft 190.4 Nm
Torque RPM	1400
Firing order	1-2-4-3
Starter volts	12
Oil capacity	5 qts 4.7 L

Transmission

Transmission options
4-speed unsynchronized gear
12-speed

Transmission — 4 forward and 1 reverse unsynchronized gear

Manufacturer	Ford
Type	unsynchronized gear
Gears	4 forward and 1 reverse
Oil capacity	6 qts 5.7 L
Oil type	SAE 80

Transmission — Sherman Step-Up Step-down

Transmission	Sherman Step-Up Step-down
Gears	12 forward and 3 reverse
Oil capacity	6 qts 5.7 L
Oil type	SAE 80
Auxiliary gearbox provides over, under, and direct-drive to the basic four-speed transmission. Tractors equipped with the transmission were marked 841S.

Dimensions

Ford 841 Tires
Ag front	6.00-16
Ag rear	12-28

Dimensions
Wheelbase	74.5 inches 189 cm
Length	120.8 inches 306 cm
Width	64 inches 162 cm
Height	57.3 inches 145 cm
Clearance (front axle)	21.4 inches 54 cm
Front tread	52 to 80 inches 132 to 203 cm
Rear tread	52 to 76 inches 132 to 193 cm

Ford 841 Weight
Shipping	2958 lbs 1341 kg
Operating	3487 lbs 1581 kg
Ballasted	6985 lbs 3168 kg

Tests

Tractor Tests
NTTL 639: LP gas 12-speed 2WD
NTTL 641: gasoline 12-speed 2WD
NTTL 653: diesel 12-speed 2WD

Nebraska Tractor Test 639
LP gas 12-speed 2WD March 12 - 31, 1958 Link: Nebraska Tractor Test 639 file
Belt power (max)	41.97 hp 31.3 kW
Belt fuel use (max)	5.0 gal/hour 18.9 l/hour
Drawbar performance
Max power	40.32 hp 30.1 kW
Gear 5 used for power test.
Max pull	4,638 lbs 2103 kg
Gear 2 used for pull test.

Nebraska Tractor Test 641
Gasoline 12-speed 2WD March 14 - 31, 1958 Link: Nebraska Tractor Test 641 file
Belt power (max)	44.71 hp 33.3 kW
Belt fuel use (max)	4.2 gal/hour 15.9 l/hour
Drawbar performance
Max power	41.44 hp 30.9 kW
Gear 5 used for power test.
Max pull	4,637 lbs 2103 kg
Gear 2 used for pull test.

Nebraska Tractor Test 653
Diesel 12-speed 2WD June 2 - 10, 1958 Link: Nebraska Tractor Test 653 file
Belt power (max)	39.99 hp 29.8 kW
Belt fuel use (max)	2.8 gal/hour 10.6 l/hour
Drawbar performance
Max power	36.79 hp 27.4 kW
Gear 3 used for power test.
Max pull	4,705 lbs 2134 kg
Gear 1 used for pull test.

Photos

Ford 841 Powermaster, left side

Ford 841 Powermaster, left side