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Ford 641 Workmaster Specifications

Ford 641 Engine Technical Data

Gasoline Engine

Engine Model ......................... Ford EAE Red Tiger
Engine Type ......................... Vertical, 4-cylinder 8-valve, gasoline
Number of Cylinders ......................... 4 Inline
Displacement, cu in (L) ......................... 134 (2.2)
Engine Bore, in (mm) ......................... 3.44 (87.0)
Engine Stroke, in (mm) ......................... 3.60 (91.0)
Rated Engine Power, hp (kW) ......................... 48.4 (36.1)
Rated Engine Speed, rpm ......................... 2200
Compression ......................... 7.5:1
Firing Order ......................... 1-2-4-3
Spark Plug ......................... 14MM
Spark Plug gap (Minimum), in (mm) ......................... 0.025 (0.635)
Spark Plug gap (Maximum), in (mm) ......................... 0.028 (0.711)
Air Cleaner ......................... Oil bath
Belt Pulley Diameter, in (mm) ......................... 9 (220)
Belt Pulley Width, in (mm) ......................... 6.5 (160)
Fuel Tank Capacity, gal (L) ......................... 13.0 (49.2)
Oil Capacity, qts (L) ......................... 5.0 (4.7)
Coolant Capacity, qts (L) ......................... 15.0 (14.2)
Electrical System Rating, Volts ......................... 6
Charging System ......................... Generator
Charging System Rating, Amps ......................... 20

Diesel Engine

Engine Model ......................... Ford
Engine Type ......................... Vertical, four-cylinder diesel
Number of Cylinders ......................... 4 Inline
Displacement, cu in (L) ......................... 144 (2.4)
Engine Bore, in (mm) ......................... 3.56 (90.0)
Engine Stroke, in (mm) ......................... 3.60 (91.0)
Rated Engine Power, hp (kW) ......................... 42.7 (31.8)
Rated Engine Speed, rpm ......................... 2200
Maximum Torque, Nm (ft-lbs) ......................... 172 (127)
Torque Speed, rpm ......................... 1600
Compression ......................... 16.8:1
Firing Order ......................... 1-2-4-3
Air Cleaner ......................... Oil bath
Fuel Tank Capacity, gal (L) ......................... 13.0 (49.2)
Electrical System Rating, Volts ......................... 12
Charging System ......................... Generator
Battery Rating, A/h ......................... 135

Power Take-Off

PTO Operational Type ......................... Transmission
PTO Horsepower (Diesel), hp (kW) ......................... 31.8 (23.7)
PTO Horsepower (Gasoline), hp (kW) ......................... 33.7 (25.1)
PTO Speed, rpm ......................... 540

Ford 641 Transmission

Transmission Type (Std) ......................... 4F/1R, Unsynchronized gear
Number of Forward Gears ......................... 4
Number of Reverse Gears ......................... 1
Clutch ......................... Dry disc
Maximum Forward Speed, mph (kph) ......................... 13.7 (22.0)
Maximum Reverse Speed, mph (kph) ......................... 4.3 (6.9)

Transmission Type (Opt) ......................... 12F/3R, Unsynchronized gear
Number of Forward Gears ......................... 12
Number of Reverse Gears ......................... 3
Clutch ......................... Dry disc
Oil Capacity, qts (L) ......................... 6.0 (5.7)
Maximum Forward Speed, mph (kph) ......................... 16.0 (25.8)
Maximum Reverse Speed, mph (kph) ......................... 6.0 (9.7)
Service Brake ......................... Differential mechanical expanding shoe

Ford 641 Wheels and Tires

Drive Wheels ......................... 2WD 4x2
Steering Configuration ......................... Front Steer
Steering System ......................... Manual (Std) / Power assist (Opt)
Front Tire Size ......................... 5.50-16
Rear Tire Size ......................... 11.00-28
Front Tread, in (mm) ......................... 52-80 (1320-2030)
Rear Tread, in (mm) ......................... 52-76 (1320-1930)

Ford 641 Hydraulics and Hitch

Hydraulic System Type ......................... Open center
Implement Pump Flow, gpm (Lpm) ......................... 4.1 (15.1)
Hydraulic Pressure, Bar (psi) ......................... 147 (1990)
Hydraulic System Capacity, gal (L) ......................... 2.0 (7.6)
3-Point Hitch Category ......................... 1
Standard Lift Capacity at lift pin, lb (kg) ......................... 1250 (565)

Ford 641 Dimensions and Weight

Wheelbase, in (mm) ......................... 78.5 (1990)
Length, in (mm) ......................... 121.4 (3080)
Height, in (mm) ......................... 58.7 (1490)
Overall Width, in (mm) ......................... 64.8 (1640)
Ground Clearance, in (mm) ......................... 21 (530)
Weight (Shipping), lb (kg) ......................... 3300 (1500)
Weight (Ballasted), lb (kg) ......................... 5500 (2500)

FORD TRACTORS TROUBLESHOOTING
1710	1900	2120	2600	3600
3930	4100	4630	5600	5640
6410	6610	6640	6710	6810
7610	7740	7810	8210	8240
8630	8830	8770	TW30	TW35