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Massey Ferguson MF 4800, MF 4840 and MF 4880 Tractor Specifications

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Complete specifications for the Massey Ferguson MF 4800, MF 4840, and MF 4880 four-wheel-drive tractors, transcribed from the specifications section of the factory operator's manual and assembly instructions (Form No. 1448 471 M2, dated 8/79). All three run a Cummins 903 cu. in. (14.8 litre) V8 diesel, direct injection, at 15.5:1 compression: the MF 4800 and MF 4840 use the naturally aspirated V903, while the MF 4880 steps up to the turbocharged VT903.

Bare engine horsepower, by manufacturer's estimate, runs 225 hp for the MF 4800, 265 hp for the MF 4840, and 320 hp for the MF 4880 — the same block across three power levels, primarily through turbocharging and tuning. Drive runs through a 14 inch four-plate multi-disc oil-cooled clutch to either a 12-speed manual transmission or an 18-speed unit combining a 3-speed power shift with the manual gearing. Brakes are an 18 inch hydraulically actuated disc on the drive line, and the hydraulic system is open center with a 3-spool valve, three float positions, and three gear pumps serving the auxiliary hydraulics, steering, and the lift circuit and transmission lubrication separately.

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Engine

Type Cummins V903 (MF 4800, MF 4840) or VT903 (MF 4880), direct injection
Cylinder Bore and Stroke 140 x 121 mm (5.5 x 4.75 inches)
Displacement 14.8 litres (903 cu. ins.)
Cylinder Sleeves Wet
Compression Ratio 15.5 to 1
Firing Order 1-5-4-8-6-3-7-2
Low Idle 1000 rpm ± 25
Rated Speed 2600 rpm
High Idle 2750 rpm ± 50
Valve Lash, cold, exhaust 0.025 inch
Valve Lash, cold, intake 0.012 inch

Bare Engine Horsepower

MF 4800 167 kW (225 hp, manufacturer's estimate)
MF 4840 197 kW (265 hp, manufacturer's estimate)
MF 4880 238 kW (320 hp, manufacturer's estimate)

Fuel System

Type Gravity flow and pressure fed
Filters Two, full flow, replaceable elements

Electrical System

Batteries Four, 12 volt, negative ground
Starter Switch Key operated
Starter 12 volt, 4-pole
Alternator 60 amp, continuous output, diode rectified A.C. type with built-in solid state regulator

Brake

Type Hydraulically actuated, 18 in. disc on the drive line, self-adjusting

Hydraulic System and Power Train

Hydraulic System Open center, 3-spool control valve with three float positions; three gear pumps supplying the auxiliary hydraulic system, steering system, and lift circuit and transmission lubrication
Clutch 14 in. four-plate, multi-disc, oil cooled
Transmission 12-speed manual, or 18-speed combining a 3-speed power shift with the manual gearing

Capacities

Component Litres U.S. Imperial
Fuel 719 L 190 gals. 158.2 gals.
Cooling System 58.8 L 15 gals. 12.5 gals.
Crankcase 31.7 L 33.5 qts. 27.9 qts.
Center Housing, Front 41.6 L 11 gals. 9.2 gals.
Center Housing, Rear 83.4 L 22 gals. 18.3 gals.
Steering Reservoir 109.9 L 29 gals. 24.1 gals.
Transmission 47.4 L 12.5 gals. 10.4 gals.

Dimensions

Wheel Base 3.5 m (137 inches)
Overall Length 6.5 m (257 inches)
Overall Height 3.3 m (130 inches)
Overall Width, standard axle 2.74 m (108 inches)
Tread Width Multiple settings, see manual page 66
Turning Radius Approx. 5.2 m (17 ft.)
Ground Clearance, minimum Approx. 297.5 mm (11-3/4 inches)
Shipping Weight 12,258 kg (27,000 lbs.)
Maximum Operating Weight 15,422 kg (34,000 lbs.)

Tires

Single 24.5-32 R1/R20, 10 ply; 30.5L-32 R1-2, 10 ply
Dual 18.4-38 R1/R20, 8 ply; 20.8-38 R1/R20, 8 ply; 23.1-34 R1/R20, 8 ply; 24.5-32 R1/R20, 10 ply; 30.5-32 R1, 10 ply

Notes:
All seven capacity rows in this manual convert correctly against their stated litre figures, within about 3.5% in the worst case — consistent with period rounding rather than a unit or labeling error. This is the cleanest capacities table found in this batch of MF manuals.
Bare engine horsepower is a manufacturer's estimate, not a Nebraska Test figure.
All specifications transcribed from the specifications section of the Massey-Ferguson MF 4800, MF 4840, and MF 4880 operator's manual, Form No. 1448 471 M2, dated 8/79, 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 471 M2

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