Toyota 8FD80N Specifications
The Toyota 8FD80N is an 8-ton (17,600 lb class)
heavy-capacity diesel forklift engineered for the highest-demand industrial
environments where continuous lifting, extreme loads, long operating cycles, and
outdoor durability are essential. As part of Toyota’s 8-Series heavy-duty
lineup, the 8FD80N integrates a reinforced steel chassis, extra-wide mast and
carriage assembly, oversized pneumatic tires, a high-output hydraulic system,
and Toyota’s System of Active Stability (SAS). This model is designed for steel
fabrication yards, ports and marine terminals, precast concrete plants, heavy
construction material distribution hubs, foundries, aluminum mills, railroad
depots, and industrial storage facilities.
Powering the 8FD80N is the Toyota 14Z-II diesel engine—a rare and highly
specialized 6-cylinder, 5.2-liter industrial engine designed for maximum torque
at low RPM. This engine provides improved smoothness, reduced vibration, and
strong lugging power during heavy lifting and grade operations. The 14Z-II is a
mechanically governed, naturally aspirated diesel engine that emphasizes
simplicity, serviceability, low fuel consumption, and extreme durability under
multi-shift operation.
The 8FD80N features a large-displacement industrial cooling system, heavy-duty
powershift transmission, oil-immersed wet-disc brakes, planetary hub reduction
axle, wide steering geometry, and high-visibility mast design. With its robust
frame, strong hydraulic output, and balanced design, the forklift allows
operators to handle oversized, dense loads with excellent control and safety.
Toyota engineered this machine for long-term reliability, low downtime, and
outstanding load-handling consistency in severe operating conditions.
Basic Technical
Data
Engine model: Toyota 14Z-II
Engine type: inline 6-cylinder, 4-stroke, direct-injection diesel
Displacement: 5204 cc (5.2 L / 317 cu in)
Bore x stroke: 98 mm x 115 mm
Rated output: 56 kW (75 hp) @ 2100 rpm
Peak torque: approx. 360-420 Nm (265-310 lb-ft) @ 1400-1600 rpm
Aspiration: natural
Fuel system: mechanical direct-injection, inline pump
Governor: mechanical industrial
Compression ratio: approx. 18-20:1
Idle speed: approx. 750-850 rpm
Max governed speed: approx. 2400-2500 rpm
Firing order: 1-5-3-6-2-4
Lubrication System
Type: full-pressure wet-sump system
Oil capacity: approx. 14-16 L (14.8-16.9 qt)
Pump: high-capacity gear-type
Operating pressure: 300-450 kPa (44-65 psi)
Filtration: spin-on full-flow filter
Oil cooler: integrated plate-type
Recommended oil: SAE 15W-40, API CF/CG or higher
The lubrication system is designed for continuous heavy-load forklift operation,
maintaining stable oil pressure at low speeds under high torque.
Cooling System
Cooling type: liquid-cooled
Coolant capacity: approx. 16-18 L (16.9-19 qt)
Thermostat: opens approx. 82°C (180°F)
Water pump: belt-driven centrifugal
Radiator: heavy-duty multi-row industrial core
Fan: mechanical, shrouded
System pressure: 90-110 kPa (13-16 psi)
The system maintains low engine temperatures during high-load cycles, extended
idling, and outdoor heat exposure.
Transmission
Type: heavy-duty Toyota powershift
Speeds: 1F/1R or 2F/2R depending on configuration
Forward speed (unloaded): approx. 20-24 km/h (12-15 mph)
Reverse speed: approx. 18-22 km/h (11-14 mph)
Transmission capacity: approx. 14-18 L (14.8-19 qt)
Fluid type: Toyota ATF T-IV or Dexron III
Clutch packs: oil-immersed multi-disc
F/R control: column-mounted hydraulic selector
Drive Axle
Construction: heavy cast-steel industrial axle
Final reduction: planetary hub reduction
Differential: bevel-gear
Axle capacity: approx. 14-18 L (14.8-19 qt)
Gear oil type: SAE 80W-90 or 85W-140
Braking System
Service brakes: hydraulic wet-disc brakes, fully sealed
Parking brake: mechanical or hydraulic-assist lever
Wet-disc brakes provide high durability, low fade, and minimal contamination.
Voltage: 24 V
Battery configuration: 2 x 12 V, 80-100 Ah each
Alternator output: approx. 50-80 A
Starter motor: approx. 4.0-5.0 kW
Engine control: mechanical
Safety: SAS, OPS, neutral-start interlock, overheat warning
Instrumentation: hour meter, coolant temp, charge lamp, oil pressure, system
warnings
Drive:
Drive wheels: front
Steering wheels: rear
Drive configuration: 2WD heavy industrial
Tires (pneumatic, heavy-duty):
Front: 300-15, 28x12-15, or 8.25-15
Rear: 7.00-12 or 7.50-12
Options: solid pneumatic, foam-filled, non-marking
Ground Clearance:
Chassis: approx. 200-260 mm (7.9-10.2 in)
Under-mast: approx. 190-250 mm (7.5-9.8 in)
Frame:
Heavy welded-steel chassis with reinforced bulkhead
Wide mast stance
Protected hydraulic routing.
Steering:
Type: hydrostatic fully hydraulic
Steering pump flow: approx. 15-20 L/min
Steering axle: oscillating heavy-duty center-pivot
Turning radius: approx. 3.0-3.4 m (118-134 in)
Steering wheel turns: approx. 2.5-3.0 lock-to-lock
System type: open-center
Pump type: high-capacity gear pump
Max pressure: approx. 18-21 MPa (2600-3050 psi)
Flow rate: approx. 80-110 L/min (21-29 gpm)
Reservoir capacity: approx. 70-90 L (74-95 qt)
Lift cylinders: heavy double-acting
Tilt cylinders: double-acting with holding valves
Control valves: mechanical multi-spool
Hoses/lines: steel tubing + reinforced hoses
| Service Refill Capacities |
Engine oil: 14-16 L
Cooling system: 16-18 L
Transmission: 14-18 L
Drive axle: 14-18 L
Hydraulic tank: 70-90 L
Mast types: heavy 2-stage V-mast; 3-stage
full-free-lift FSV
Lift heights: 3.0-6.0 m (118-236 in)
Free lift: 0.2-1.2 m depending on mast
Fork lengths: 1220 mm (48 in); 1524 mm (60 in); 1829 mm (72 in); 2134 mm (84 in)
Fork width: 125-150 mm (5-6 in)
Fork thickness: 50-60 mm (2.0-2.4 in)
Carriage type: ITA Class IV or V
Attachments: side-shifter, fork-positioner, rotator, clamps
Rated capacity: 8000 kg (17,600 lb) at 600 mm (24 in)
load center
Capacity derating due to: mast height, attachment mass, load center shift, fork
length, forward tilt.
Lift speed (unloaded): 0.40-0.55 m/s (79-110 ft/min)
Lift speed (loaded): 0.25-0.40 m/s (50-80 ft/min)
Lowering speed: 0.50-0.70 m/s
Drawbar pull: approx. 42-58 kN (9400-13,000 lbf)
Gradeability (unloaded): approx. 25-30%
Gradeability (loaded): approx. 12-18%
Overall length to fork face: approx. 4200-4400 mm
(165-173 in)
Overall width: approx. 1900-2100 mm (75-83 in)
Overhead guard height: approx. 2400-2550 mm (94-100 in)
Mast lowered height: approx. 2800-3000 mm
Mast raised height: approx. 4500-6000 mm
Wheelbase: approx. 2000-2200 mm
Ground clearance: 200-260 mm
Turning radius: 3.0-3.4 m
Aisle width (1000x1200 pallet): approx. 5.0-5.6 m (197-220 in)
Free lift: 0.2-1.2 m
Fork options: 48, 60, 72, 84 in
Operating weight: approx. 10,800-13,000 kg (23,800-28,650 lb)
Counterweight: approx. 3000-4500 kg (6613-9920 lb)
Daily: check engine oil, coolant, hydraulic oil, tires,
forks, chains, brakes, steering
250 hours: engine oil + filter, air filter cleaning, mast and steer axle
lubrication
500 hours: transmission filter, hydraulic return filter, axle seal inspection
1000 hours: replace ATF, replace axle oil, valve adjustment, fuel filter
replacement
2000 hours: hydraulic oil, coolant, mast inspection, pump pressure test,
steering axle
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