Massey Ferguson 8250 Engine Specifications
Engine Model – Valmet 634
Number of cylinders – 6
Turbocharger – Yes
Air / Air intercooler – Yes
Bore (mm) – 108
Stroke (mm) – 134
Capacity (l) – 7.4
Rated power (ISO Kw) – 136
At engine speed (rpm) – 2200
Maximum torque (ISO Nm) – 797
Engine speed at maximum torque – 1400
Idle speed – 950
Maximum power speed (rpm) – 2200
Maximum speed at no load (rpm) – 2354
Lubrication by gear pump – suction strainer and interchangeable external
cartridge filters
Valves – Overhead valves operated by pushrods
Rocker arm clearance (cold) Inlet, mm – 0.35
Rocker arm clearance (cold) Exhaust, mm – 0.35
Engine oil cooler – Yes
Fuel filter – Yes
No. of elements – 2
Injection pump – Bosch
Injectors and nozzle holder – Stanadyne
Two-stage air filter, a dry filter element with a filter-clogging
indicator.
Start up in cold weather – Thermostart
Cooling system mode – Thermostat controlled, open temperature: 82C.
Fan – Viscostatic releasable type
Water pump – belt-driven
Fan belt tension – 15 mm (0.6″) to 20 mm (0.8″) on the longest run
Voltage – 12 volt, negative to ground
Batteries – 2 maintenance-free batteries
Alternator – 120 Amp.
Starter safety – Controlled by clutch pedal
Headlights – European dipped beam 40/45W
Parking lights – 5W
Direction indicators – 21W
Number plate light – 10W
Work lights – 55W-H3
Dials and signal lamp lighting – 3W-2W-1,2W
Roof light – 10W
MF 8250 Transmission
Transmission Type – Dynashift gearbox with power shuttle
32 forward speeds / 32 reverse speeds
Features – four ratios selectable without declutching, power shuttle
Power shuttle – clutch controlled 8 forward speed discs / 6 reverse
speed discs
Creeper gearbox – 48 forward speeds / 48 reverse speeds
Filtering – 1 x 60 micron suction strainer
Final Reduction drive units – Epicyclical, located in rear axle
housings.
Final Reduction ratios (Composite) – 7.14:1
Massey Ferguson 8250 Power take-off
Interchangeable shaft – 540 (6 splines) or 1000 rpm (21 splines) at
engine speed of 2000 rpm.
Shiftable – with 540 rpm or 1000 rpm interchangeable end
750 rpm economy PTO – 750 rpm at engine speed of 2000 rpm (6 splines,
shaft 35 mm / 20 splines shaft 44.5 mm or 21 splines shaft 35 mm)
Front axle
Front axle Model – Carraro 20.43 (4-wheel drive)
Suspension – Option available
Clutch mechanism – Electro-hydraulically controlled from a button on the
armrest inside the cab
Differential lock – Differential lock coupling is electro-hydraulically
controlled
Lock – oil-bath clutch (Carraro 20.43 front axles)
Gear ratios (Carraro 20.43) – 20.769/1 From K116015
MF 8250 Steering and Brakes
Brakes Type – disc brakes, two discs per wheel with double reduction
unit constant flow lubrication, external dia. 313 mm.
Lining internal dia – 239 mm.
Operation – Hydraulic, using two master cylinders.
Parking brake – operates on intermediate shaft of drive pinion.
Park lock – mechanically locks the intermediate shaft of the drive
pinion.
Rear differential lock Type – 5” or 7” multidisc (according to
version) in oil bath, standard torque
Control – Electrically controlled hydraulics
Steering Type – Hydrostatic, telescopic or fixed tilting steering column
two double action steering rams
Front Wheels (4 wheel drive) – adjustable steel rims
Rear Wheels – steel rims (fixed or adjustable), manually adjustable
pressed steel rim with cast iron disc
Hydraulics and Hitch
Type – Closed centre hydraulic circuit with flow and pressure regulation
Hydraulic circuit – 110 l/min at 200 bar
Pump Type – variable displacement pump
Valves – 3
Pump flow – 27.7 gpm (104.8 lpm)
Rear Type – 3
Hitch lift – 14000 lbs (6350 kg)
Massey Ferguson 8250 Capacities
Fuel tank with additional reserve – 410 L
Cooling system – 34 L
Engine sump – 19 L
Transmission / rear axle Dynashift gearbox (Composite) – 114 L
Carraro 20.43 fixed front axle assembly – 6 L
Carraro 20.43 front final drive unit (each) – 1.3 L
Composite rear final drive drive units (each) – 4,5 L
Dimensions and Weights
Wheelbase, mm – 3075
Overall length (with 3PT, without front weights), mm – 5111/5201
Height to roof (cab tractor), mm – 3042
Overall width, mm – 2998
Ground clearance, mm – 453
Front tyres – 16.9R30
Rear tyres – 20.8 R42
Min. weight (with full tank, without extra weight steel wheels) – 8295
kg