Zetor 8640

The Zetor 8640 is a tractor produced by Zetor. It is equipped with a 254 ci 4.2 L engine. The listed engine power is Diesel (listed): 82 hp / 61.1 kW. Transmission: 18 forward and 6 reverse. Drive type: 4x4 MWD 4WD. Operating weight: 8430 lbs 3823 kg.

Overview

	1996 - 1999 Row-Crop tractor

Production
Manufacturer	Zetor
Row-Crop tractor
Built in Brno, Czech Republic
Original price was $34,000 in 1999

Variants
8620	2WD
8640	4WD

Zetor 8640 Engine
Zetor 4.2L 4-cyl diesel
Fuel tank	28 gal 106.0 L
Engine details ...

Zetor 8640 Transmission
18-speed synchromesh
Transmission details ...

Zetor 8640 Power
Engine	82 hp 61.1 kW
PTO (claimed)	74 hp 55.2 kW

Mechanical
Drive	4x4 MWD 4WD
Differential lock	electro-hydraulic rear
Power steering
Hydraulic wet disc brakes
Cab standard with available air-conditioning. Two-post ROPS available.

Hydraulics
Type	open center
Pressure	2600 psi 179.3 bar
Valves	3
Pump flow	16 gpm 60.6 lpm
Steering flow	6.5 gpm 24.6 lpm

Tractor hitch
Rear Type	II
Control	position and draft control
Rear lift	9000 lbs 4082 kg

Power Take-off (PTO)
Rear PTO	independent
Clutch	wet disc
Rear PTO Type	540/1000 (1.375)

Dimensions & Tires
Wheelbase	93.5 inches 237 cm
Weight	8430 lbs 3823 kg
Front tire	12.4-24
Rear tire	16.9-38
Full dimensions and tires ...

Electrical
Ground	negative
Charging system	alternator
Charging amps	55
Battery CCA	1150
Battery volts	12

References
Model 8620/8640 published in 1996, by Zetor

Engine

Engine Detail — 254 ci / 4.2 L Diesel

Manufacturer	Zetor Z 1201
Fuel Type	Diesel
Configuration	4-cylinder, liquid-cooled
Displacement	254 ci 4.2 L
Bore/Stroke	4.134x4.724 inches 105 x 120 mm
Power	82 hp 61.1 kW
Fuel system	direct injection
Pre-heating	glow plugs
Rated RPM	2200
Starter	electric
Starter volts	12

Transmission

Transmission — 18 forward and 6 reverse synchromesh

Type	synchromesh
Gears	18 forward and 6 reverse
Clutch	330mm hydraulic dry disc
Three gears in high/low/reverse ranges with a three-speed torque multiplier.
With 16.9-38 rear tires.

Dimensions

Zetor 8640 Tires
Ag front	12.4-24
Ag rear	16.9-38

Dimensions
Wheelbase	93.5 inches 237 cm
Length	156 inches 396 cm
Width	76 inches 193 cm
Height (cab)	105 inches 266 cm
Weight	8430 lbs 3823 kg
Ground clearance	17 inches 43 cm
Front tread	64 to 79.5 inches 162 to 201 cm
Rear tread	59 to 71 inches 149 to 180 cm

Photos

Zetor 8640 tractor photo