John Deere 8400

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  • 532 hp FT4 John Deere engine.
  • All-new design delivers improved serviceability with an integrated KP hoist, easy header hook-up and ground level fuel fill.
  • A best-in-class cab offers easier to use controls, better display access and visibility.


Manufacturer John Deere
Model 8400
Engine power  
Maximum power at 1800 rpm  397 kW 
   540 PS / 532 hp 
Maximum power at 1900 rpm  ---  
Rated power at 2100 rpm  369 kW 
   502 PS / 495 hp 
Fuel tank capacity  1100 L 
   290.6 U.S. gal. 
Manufacturer  John Deere  
Type  PowerTech™ PSS 13.5L  
   Exhaust emission regulation compliancy - Final Tier 4  
Model  Europe: 6135HZ014  
   North America: 6135HZ013  
Displacement  13.5 L 
   823.8 cu in. 
Cylinders  In line six  
Fuel system  Unit injectors plus four valves  
Cooling system  
Cooling system capacity  113 L 
   29.85 U.S. gal. 
Cooling fan drive  Direct  
Ground drive  Standard: Hydrostatic, 3-speed - manual shift with helical gears   
 Engine rpm on road: 1650 rpm  
 Optional: Prodrive™, autoshift transmission, differential lock (automatic and manual), automatic wet brake system   
 Engine rpm on road: 1140-2100 rpm 
Hydraulics  Load sensing  
Crop harvesting unit  Harvest channel standard  
Crop flow components  Low-friction crop-flow concept  
Main clutch  Dry clutch  
Number of discs  One disc  
Main driveband  Reinforced with Kevlar inserts  
Belt tensioning  Active, hydraulic pressure  
Main driveband, polybelt belts  Six belts  
Electrical system/Electrical and hydraulic system  
Type/voltage  12 V 
Batteries/battery quantity/capacity  2 x 174 amp-hr 
Alternator  200 amp 
Hydraulic system capacity  50 L 
   13.2 U.S. gal. 
Ground drive  
Type  Standard: hydrostatic, 3-speed manual shift  
   Optional: Prodrive™, autoshift transmission  
Differential lock  Manual or automatic (optional comes with ProDrive)  
Maximum transport speed  Hydrostatic transmission: 30 km/h  
 18.6 mph  
 ProDrive transmission: 40 km/h  
 24.9 mph 
Rear axle type  Hydro-mechanical 4WD  
Automatic wet brake system  Available with ProDrive transmission  
Engine rpm - Management  Optional  
Tilt and extend steering column  Standard  
Air conditioning and heater  Standard - ClimaTrak  
Cool box  Optional  
Trainee seat  Standard  
Hectare counter  Standard  
Operator information system  Cornerpost display  
CAN-BUS electronics  Standard  
Operator's seat  Air-suspension seat standard  
Side window wiper  Rear and side window wiper optional  
   Parallel-type windscreen wiper  
Electric adjust and heated  Optional on rear view mirrors  
Rear view mirrors  Standard  
Machine management solutions  
Yield monitoring  Harvest Monitor™ optional  
Documentation  Harvest Doc™ optional  
Crop analysis  HarvestLab™ optional  
Length-of-cut control based on crop parameter  Infinitely variable length-of-cut (IVLOC™) standard  
   AutoLOC™ optional - use with HarvestLab  
Satellite (GPS) assisted steering  AutoTrac™ optional  
Crop-harvesting units  
Header height control  Advanced header control (AHC) optional  
Grass pick-ups  3.0, 4.0, 4.5 m 
   9.8, 13.1, 14.8 ft 
Maize or corn headers  ---  
Harvest channel  
Width  ---  
Length of cut  
Range  40 knives: 7-26 mm (0.275-1.0 in.) LOC / 1 mm (0.04 in.) steps  
   48 knives: 6-22 mm (0.24-0.87 in.) LOC / 1 mm (0.04 in.) steps  
Feeding system/Feedrolls  
Feed roll frame opening  Swing away, 37-45 degree (angle) 
Number  Four  
Metal detector  Standard  
   Stone detector is optional  
Width, front  660 mm 
   26 in. 
Standard feed roll drive  Hydro feedroll drive IVLOC standard  
   Infinitely header drive speed standard  
Optional feed roll drive  ---  
Type  ---  
Knife drum width  680 mm 
   26.8 in. 
Knife drum diameter  668 mm 
   26.3 in. 
Speed at rated engine speed  Standard - 1100 rpm 
   Optional - 1200 rpm 
Knife types available (crop)  Straight - grass  
   Curved - corn  
Number of knives  40 or 48  
Knife sharpening system  
Reverse rotation  Yes  
Automatic from cab  Yes, remote from cab  
Reverse drive  Standard  
Reverse speed  ---  
Kernel processor  
Type  Serrated roller  
Quick-change  Quick change and remove  
Serrated roller (kernel processor)  
Maize, roll teeth number (speed differential)  118 - 24 or 32 percent 
Wholecrop, roll teeth number (speed differential)  178 - 32 percent 
Sorghum, roll teeth number (speed differential)  238 - 32 percent 
Weight  145 kg 
   320 lb 
Disk type (kernel processor)  
Number of disks (top/bottom)  15/14 plus 2-1/2  
Diameter of disks  240 mm 
   9.45 in. 
Weight  172.4 kg 
   380 lb 
Blower/Crop accelerator  
Number of blades  10  
Rotation, degrees  210 degree (angle) 
Hydraulic height position  Hydraulic raise and lower standard  
   Automatic spout positioning optional  
Double-cap deflection  Standard  
Number of wear liners  ---  
Rotary radiator screen cleaner  Standard  
Automatic lubrication system  AutoLube optional  
Engine oil and filter change duration  JD+50™ II oil: 500 hours  
   Other oil: 250 hours  
With front tires  710/70R42  
With rear tires  620/60R30  
Transport length (without header)  6.5 m 
   21.7 ft 
Transport width (without header)  3-3.5 m 
   9.84-11.5 ft 
Transport height (to cab roof)  3.89 m 
   12.75 ft 
Working height (maximum)  Height to spout: 6.60 m 
   21.65 ft 
Approximate weight (without header)  ---  
Propelling drive  
Standard  Hydrostatic, 3-speed - manual shift with helical gears  
Type  Standard: Hydrostatic, 3-speed - manual shift with helical gears  
   Hydro-mechanical rear axle optional  
Date collected  ---