MF 8280 Engine Specifications
Engine Model – Valmet 645
Number of cylinders – 6
Turbocharger – Yes
Air / Water intercooler – Yes / No
Air / Air intercooler – No / Yes
Bore (mm) – 111
Stroke (mm) – 145
Capacity (l) – 8.4
Rated power (ISO Kw) – 181 / 192
At engine speed – 2200
Maximum torque (ISON Nm) – 1002 / 1120
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/Bosch
Type – two stage air filter, dry filter element with filter clogging
indicator.
Start up in cold weather – Thermostart
Voltage – 12 volt, negative to ground
Batteries – 2 maintenance-free batteries
Alternator – 120 Amp.
Starter safety – Controlled by clutch pedal
Cooling system Mode – Thermostat controlled, open temperature: 82C.
Fan – Viscostatic releasable type
Water pump – gear-driven
Fan belt tension : 15 mm (0.6″) to 20 mm (0.8″) on the longest run
Massey Ferguson 8280 Transmission
Transmission Type – Full Powershift gearbox
Speeds – 17 or 18 forward (depending on 30 km/h or 40 km/h version) and
8 reverse
Clutches : 9 clutches controlled by solenoid valves
Creeper gearbox – 34 or 36 forward speeds (depending on 30 km/h or 40
km/h version) and 16 reverse speeds
Hydraulics – Gerotor pump, capacity 110 l/min at 2200 rpm provides (for
lubrication and supply of clutches, cooling system and boosting of) the
master cylinders.
Filtering – 1 x 150 micron suction strainer, located inside the housing
External – 15-micron filter, 3-way filter protects solenoid valves from
particles.
Final reduction drive units – Epicyclical, located in rear axle
housings.
Reduction ratios (Dual) – 9.47:1
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)
MF 8280 Mechanical
Front axle Type – Dana AG280 (4WD)
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 on Dana AG280 front axles
Gear ratios AG280 – 20.363/1 From L074009
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 – 7” Multi-disc in oil bath, hypoid 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
Massey Ferguson 8280 Hydraulics and Hitch
Type – Closed centre hydraulic circuit with flow and pressure
regulation.
Circuits – 150 l/min at 200 bar (Full Powershift gearbox)
Booster pump – maximum flow 150 l/min or 215 l/min (150 l/min hydraulic
circuit) at 2200 rpm guaranteeing a constant 5 bar boost for the
variable displacement pump, also
provides lubrication for the rear axle.
Low pressure circuit for Full Powershift gearbox – 17 bar pressure
Steering – 17 bar valve
Auxiliary spool valves – hydraulic lift system
Filtering – 1×150 micron suction strainer located on the left-hand side
of the transmission housing.
Main external high-pressure – 15-micron oil filter, located on the
righthand side of the transmission housing.
Hitch Type – 3-point hitch, category 3
Position of lift rod on drawbar (mm) – 600
Length of lift rod (mm) – 838/915
Horizontal drawbar (Kg) – 9475/9667
Drawbar in transport position (Kg) – 12001/11252
MF 8280 Capacities
Fuel tank with additional reserve – 456 L
Cooling system – 34 L
Engine sump – 19 L
Transmission / rear axle Full Powershift gearbox (double drive unit) –
156 L
AG280 front axle assembly – 16 L
AG280 front final drive unit (each) – 2.7 L
Dimensions and weights
Wheelbase, mm – 3075
Overall length (with 3PT, without front weights), mm – 5251
Height to roof (cab tractor), mm – 3117
Overall width, mm – 3030
Ground clearance, mm – 432
Front tyres – 600/70R28
Rear tyres – 650/85R38
Min. weight (with full tank, without extra weight steel wheels) – 9250
kg