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Massey Ferguson MF 150 Tractor Specifications

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Complete specifications for the Massey Ferguson MF 150 tractor, transcribed from the specifications section of the factory operator's manual (Form No. 1448 079 M3, dated 5/72). The MF 150 was offered with a choice of two Perkins three-cylinder engines of identical 152.7 cu. in. displacement: the AG3.152 gasoline at 7.5:1 compression, and the AD3.152 diesel at 18.5:1.

A gasoline Perkins is an unusual thing to find in a tractor of this period, and the two engines share bore, stroke, displacement, firing order and oil pressure. They differ in compression, no-load governed speed, valve clearance and, of course, fuelling.

Transmission was either an eight-speed giving eight forward and two reverse, or the optional Multi-Power, which adds two-stage compounding for twelve forward and four reverse. As on the MF 180, the clutch follows the PTO choice rather than the transmission: “Live” PTO tractors get a dual dry-disc of 11 and 9 inches, “Independent” PTO tractors a single 11 inch dry disc.

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Engine

Specification Gasoline Diesel
Model Perkins AG3.152 Perkins AD3.152
Number of Cylinders 3 3
Bore 3.6 inches 3.6 inches
Piston Stroke 5 inches 5 inches
Total Displacement 152.7 cu. ins. 152.7 cu. ins.
Compression Ratio 7.5 to 1 18.5 to 1
Firing Order 1-2-3 1-2-3
Lubrication (at 2000 rpm) Pressure fed at 40–55 psi Pressure fed at 40–55 psi
Valve Clearance, hot Intake 0.012 inch, exhaust 0.015 inch Intake and exhaust 0.010 in.
Valve Clearance, cold — Intake and exhaust 0.012 in.
Idle Speed 725–775 rpm 725–775 rpm
Maximum Speed (no load) 2225–2275 rpm 2135–2185 rpm
Governor Variable speed centrifugal, fly weight Built-in injection pump

Fuel System

Specification Gasoline Diesel
Type Gravity flow Pressure-fed
Carburetor Up draft, dustproof type —
Primary Fuel Pump — Diaphragm type
Fuel Filter — One filter, full flow, with replaceable element1
Injection Pump — CAV distributor type
Fuel Injectors — CAV multi-hole type
Injection Timing — 24° B.T.D.C.

Cooling System

Type Circulated by a centrifugal pump, with a by-pass system. Flow thermostatically controlled through the radiator.
Pressure Cap 7 psi

Power Train

Clutch, tractors with “Live” PTO Dual dry-disc. Primary clutch coil spring-loaded, 11 in. diameter; secondary clutch Belleville spring-loaded, 9 in. diameter.
Clutch, tractors with “Independent” PTO Single dry-disc, 11 in. diameter
Eight-Speed Transmission Constant mesh, helical primary reduction gears with spur-type speed change gears. Operated in conjunction with a planetary reduction gear assembly which provides eight forward speeds and two reverse speeds.
Multi-Power Transmission Constant mesh, helical primary reduction gears with spur-type speed change gears. Operates in conjunction with a planetary reduction gear assembly and two-stage compounding, in combination with sliding gear and planetary compounding gear, providing twelve forward speeds and four reverse speeds.

Power Take-Off

Shaft Splined, 1-3/8 in. diameter, ASAE standard
Control, “Live” PTO Three-position shift lever: engine, neutral, ground
Control, “Independent” PTO Two-position shift lever: on, off
Shaft Speed, “Live” PTO, engine 540 rpm at 1700 engine rpm
Shaft Speed, “Live” PTO, ground 1 revolution per approximately 20 in. of forward travel
Shaft Speed, “Independent” PTO, on 540 rpm at 1700 engine rpm

Electrical System

Specification Gasoline Diesel
Battery make Massey-Ferguson, negative ground Massey-Ferguson, negative ground
Battery volts 12 12
Battery amp/hour rate 60 95 on “Independent” PTO models, 60 on “Live” PTO models
Charging unit Alternator, Delco-Remy2 Generator, Delco-Remy2
Charging unit voltage 12 12
Charging rate 25 amp. 25 amp.
Regulator make Delco-Remy Delco-Remy
Starter motor make Delco-Remy Delco-Remy
Distributor make Delco-Remy —
Recommended timing at maximum engine speed of 2250 rpm 26° B.T.D.C. —
Contact point gap Set at 0.021 inch —
Spark plugs, make (standard factory equipment) Champion UN12Y —
Spark plugs, size 14 mm —
Spark plugs, gap 0.025 inch —

Brakes

Type Mechanical, double expanding shoe, self-energizing
Shoe Dimension 14 inch diameter, 2 inches wide, 118 square inch area
Pedal Free Travel 3/4 inch

Hydraulic System

Lift Pump Constant running, scotch yoke, piston-type
Maximum Pressure 2800 psi
Delivery 4.8 gpm at 2000 engine rpm and 1500 psi
Control Oscillating control valve on inlet side of pump

Capacities

Component U.S. Imperial
Fuel Tank 18.5 gals. 14.8 gals.3
Cooling System 10.5 qts.4 8.7 qts.4
Crankcase, without filter change 6 qts. 5 qts.
Crankcase, with filter change 6.5 qts. 5.4 qts.
Transmission, Differential and Hydraulic System 8 gals. 6.7 gals.
Power Steering Reservoir 1 qt. 0.8 qts.

Tire Sizes and Pressures

Rear 13.6-28-R1, 4 ply rating; 14.9-24-R1, 4 ply rating; 18.4/15-30-R1, R-2-0, 6 ply rating
Front 6.00-16, 4 ply rating; 6.50-16, 4 ply rating; 6.50-16, 6 ply rating; 7.50L-15, 6 ply rating
Tire Size Pressure
6.50-16, 4 ply 36 psi
13.6-28, 4 ply 14 psi
14.9-24, 4 ply 12 psi

Dimensions

Wheel Base 81.3 inches
Minimum Width 63.5 inches
Ground Clearance, minimum, on 14.9-24 tires 12.5 inches
Ground Clearance, front axle 20.5 inches
Turning Radius, with brakes 10 ft. 4 inches

Notes:
1 Note the difference from the MF 135, which specifies two full-flow filters on its diesel. The MF 150 manual specifies one.
2 The manual specifies an alternator on gasoline tractors and a generator on diesel tractors, both Delco-Remy and both charging at 25 amps. That is as printed and is a real difference, not a wording slip.
3 Reproduced as printed. 18.5 U.S. gallons is 15.4 Imperial, not 14.8. Working the other way, 14.8 Imperial is 17.8 U.S. The other capacity rows in this table convert correctly.
4 The unit is wrong in the manual. The cooling system row is printed as “10.5 U.S. - 8.7 Imp. gals.”. It is quarts. Ten and a half U.S. gallons is about 40 litres, which is not a cooling system for a tractor this size, and the Massey Ferguson MF 135 manual prints the identical figures, 10.5 U.S. and 8.7 Imperial, correctly as quarts. The numbers themselves convert correctly to each other; only the unit is wrong. Shown here as quarts.
This manual's specification section carries no ground speeds table and no horsepower figures. That is how the manual is written, not an omission here.
All specifications transcribed from the specifications section of the Massey-Ferguson MF 150 operator's manual, Form No. 1448 079 M3, dated 5/72, originally published by Massey-Ferguson. Verify against your tractor's serial number before ordering parts or setting clearances.

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Manual code: 1448 079 M3

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