8420T Track Tractor (235 hp)
- 8.1 L PowerTech™ engine delivers up to 43 percent torque rise and 13 percent power bulge....more
- 16-speed PowerShift transmission gives speeds ranging from 1.0 to 19.8 mph....more
- Standard automatic powershift provides automatic shifting to maximize field performance in changing conditions....more
- Exclusive TouchSet™ hydraulics allow adjusting rate and flow on-the-go from the tractor seat....more
- Category 3/3N 3-point hitch with hitch dampening and high standard lift capacity....more
- Exclusive CommandARM™ control with new SCV covers puts all major tractor functions at your fingertips....more
- Speed-sensitive variable-rate differential steering gives great control....more
- 8.1 L PowerTech™ engine delivers up to 43 percent torque rise and 13 percent power bulge....more
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| MANUFACTURER | John Deere | |||
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| MODEL | 8420T Track Tractor (235 hp) | |||
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| Official Test | Nebr OECD 1778, Summary 313 (2000) | |||
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| Engine | ||||
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| Manufacturer | John Deere | |||
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| Aspiration | Turbo & Air-to-Air Aftercooled | |||
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| Cylinders/Displacement, cu. in. (liters) | 6/496 (8.1) | |||
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| Cylinder Liners | Wet | |||
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| Standard | 130 (493) | |||
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| Performance | ||||
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| Advertised PTO HP (kW) @ Rated RPM | 235 (175) @ 2200 | |||
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| @ Standard PTO @ Eng RPM | 236.75 (176.54) @ 2200 | |||
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| Maximum @ Eng RPM | 270.62 (201.80) @ 2000 | |||
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| Max Unballast Drwbr HP (kW) @ Eng RPM | 232.61 (173.45) @ 2000 | |||
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| Maximum Torque (PTO) @ RPM, lb-ft (Nm) | 844 (1144) @ 1400 | |||
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| Max Torque Rise (80% Rtd Spd) @ Eng RPM | 36.0% @ 1798 | |||
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| Maximum Torque Rise % (PTO) @ Eng RPM | 49.3% @ 1400 | |||
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| Fuel Use, U.S.Gal/hr & HP hr/gal at: | ||||
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| PTO @ Rated Eng RPM | 13.66 (51.70) & 17.33 (3.41) @ 2200 | |||
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| Standard PTO Speed @ Eng Speed | 13.66 (51.70) & 17.33 (3.41) @ 2200 | |||
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| Maximum PTO Power @ Eng RPM | 14.60 (55.25) & 18.54 (3.65) @ 2000 | |||
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| Maximum Engine Power @ Eng RPM | 13.71 (51.90) & 15.01 (2.96) @ 2201 | |||
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| Max Unballasted Drawbar Power@Eng RPM | 14.64 (55.42) & 15.89 (3.13) @ 2000 | |||
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| 75% Load, Full Engine RPM (Unballasted) | 11.40 (43.15) & 14.01 (2.76) @ 2260 | |||
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| 75% Load @ Reduced RPM (Unballasted) | 10.09 (38.19) & 15.83 (3.12) @ 1774 | |||
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| Transmission | ||||
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| Std Transmission; Forward/Reverse | PowerShift 16/4 w/APS | |||
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| Opt Transmission; Forward/Reverse | No | |||
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| On-the-Go Shifting (Yes/No/Partial) | Yes | |||
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| Clutch; Wet/Dry | Hydraulic Wet Disk | |||
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| Creeper | No | |||
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| Power Take-Off (PTO) | ||||
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| Standard | Independent 1000 rpm | |||
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| Speeds @ RPM | 1000 @ 2179 | |||
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| Control | Electrohydraulic | |||
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| Hydraulics | ||||
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| Type | Closed-Ctr., Pres. & Flow Comp. | |||
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| Standard | 33.5 (127) | |||
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| Optional | 42.5 (161) | |||
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| Rated Flow @ One SCV, GPM (L/min) | 31.4 (118.9) w/std. pump | |||
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| Max Output @ SCV Couplers, GPM (L/min) | 43.3 (163.9) w/opt. pump | |||
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| Maximum Operating Pressure, PSI (kPa) | 2900 (20,000) | |||
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| Maximum Hydraulic Power, HP (kW) | 56.7 (42.3) | |||
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| Draft Control Type | Electrohydraulic | |||
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| Remote Control Valves Available | 4 Std. - 3 & 5 Opt. | |||
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| Hitch Category (SAE Designation) | 3/3N | |||
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| Standard | 15,180 (6884) | |||
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| Final Drive | ||||
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| Type | Outboard Planetary | |||
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| Differential Controls | Electrohydraulic | |||
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| Operator Station | ||||
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| Gearshift Location - Console/Floor | Right-Hand Armrest | |||
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| Doors | 1; Left-Hand | |||
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| dB(A) Rating | 75.7 | |||
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| Seat Suspension System | Air | |||
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| 2WD Dimensions | Track Dimensions Std/Wide Track: | |||
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| Wheelbase, in. (mm) | 89 (2261) / 120 (3047) | |||
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| Front Tread Range, in. (mm) | 60-88 (1524-2235) / 92-120 (2337-3048) | |||
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| Rear Tread Range, in. (mm) | 60-88 (1524-2235) / 92-120 (2337-3048) | |||
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| Minimum Rear Tread Setting, in. (mm) | 60 (1524) & 92 (2337) | |||
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| Turning Radius w/o Brakes, ft. (m) | Counter-Rotate | |||
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| Approx. Ship Wgt, lb.(kg) Open; Cab | 25,950 (11,770) | |||
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| MFWD Dimensions | ||||
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| 4WD Dimensions | ||||
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| Standard Tires | ||||
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| Track Widths | 16"(406mm),18(457),24Std(610),30(762) | |||
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| Miscellaneous | ||||
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| Inboard Planetary | No | |||
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| Axle Type | Outboard | |||
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| Brakes - Type and Control | Wet Disk Power | |||
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| Country of Manufacture | Waterloo, IA USA | |||
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| *Notes | Max. Vehicle Wt. 31,500 (14,288) | |||
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| Specifications subject to change. Please contact your local dealer for more detailed information. | ||||