Positioning:
The Zetor 3320-6340 series represents a robust and versatile line of tractors designed for agricultural and utility applications, offering a balance of power, efficiency, and reliability. This manual targets owners and service professionals who need comprehensive technical guidance for maintaining and repairing these machines.
Comparison:
In the compact to mid-range tractor market, the Zetor 3320-6340 series competed with models from manufacturers like Ursus, Belarus (MTZ), Landini, and McCormick, often valued for their mechanical simplicity and durability.
Features Of Manual:
This factory service manual is distinguished by its comprehensive coverage of all major tractor systems, detailed diagnostic procedures, and clear, step-by-step repair instructions. Its PDF format ensures easy searchability and accessibility on various devices.
Engine Mechanical:
Engine assembly, cylinder head, block, crankshaft, pistons, connecting rods, lubrication system, cooling system, fuel system (injection, pump, injectors), intake and exhaust systems.
Engine Electrical:
Ignition system (if applicable), starting system, charging system (alternator, starter), sensors, ECU diagnostics (if applicable).
Transmission:
Clutch operation, gearbox disassembly and assembly, power take-off (PTO) system, hydraulic shuttle (if equipped), torque converter (if equipped), transmission fluid specifications and service.
Drivetrain:
Front axle (2WD and 4WD), rear axle, differentials, drive shafts, wheel hubs, final drives, locking differentials (if equipped).
Hydraulics:
Hydraulic pump, hydraulic cylinders, control valves, hydraulic fluid type and capacity, linkage operation, hitch control systems (draft control, position control), external hydraulic services.
Steering:
Mechanical steering system, power steering system (hydraulic pump, steering cylinder, steering valve), components and repair.
Brakes:
Brake system components (master cylinder, brake pedal, brake calipers/drums, brake lines), brake fluid specifications, bleeding procedure, parking brake system.
Electrical System:
Wiring diagrams, fuse box layout, lighting system, battery service, starter motor, alternator, dashboard indicators, switches, controls.
Operator Station:
Dashboard, controls, seating, cab components (if equipped), ventilation system, sound dampening.
Bodywork And Chassis:
Frame, fenders, hood, drawbar, mounting points for implements, ballast considerations.
Scheduled Maintenance:
Oil change intervals, filter replacement schedules, greasing points, tire pressure checks, coolant checks, battery maintenance.
Troubleshooting:
Diagnostic procedures for common issues across all systems, identification of symptoms, causes, and corrective actions.
Repair Procedures:
Step-by-step instructions for disassembly, cleaning, inspection, repair, and reassembly of all major components and systems.
Overhaul Procedures:
Detailed instructions for complete engine rebuilds, transmission overhauls, and hydraulic system refurbishments.
Calibration And Adjustment:
Procedures for adjusting valve clearances, setting injection timing, calibrating hydraulic controls, and aligning steering.
Wiring Diagrams:
Comprehensive electrical schematics for all models and configurations, aiding in diagnosis and repair of electrical faults.
Depth:
Comprehensive - covers everything from basic preventative maintenance and routine servicing to in-depth diagnostics, major component overhauls, and complete system rebuilds. Suitable for professional mechanics and experienced DIY users.
Engine Model Family:
Zetor 4-cylinder diesel engines (e.g., Zetor 5201, 6701 series variations)
Horsepower Range:
Approximately 33 HP for the 3320 to 63 HP for the 6340. Specific models like 4320, 5320, 6320, 4340, 5340, 6340 will have corresponding power outputs within this range.
Torque Specifications:
Details available within the manual for specific engine variants, crucial for engine diagnostics and performance tuning.
Injection Type:
Direct injection, typically with a Zetor-designed or Bosch inline injection pump.
Engine Oil Change:
Typically every 250-300 operating hours, or annually, whichever comes first.
Transmission Oil Change:
Recommended at intervals of 1000-1200 operating hours.
Hydraulic Oil Change:
Typically every 1000-1200 operating hours, along with filter replacement.
Engine Oil:
API CD or CE rated diesel engine oil, SAE 15W-40 is common. Consult the manual for exact specifications.
Transmission Fluid:
Zetor recommends specific transmission/hydraulic fluid or equivalent. Common types include UTF (Universal Tractor Transmission Fluid) or similar. Capacity varies by model.
Coolant:
Ethylene glycol-based antifreeze mixture. Typically a 50/50 mix with distilled water for freeze protection and corrosion inhibition.
Brake Fluid:
DOT 3 or DOT 4 brake fluid is generally used. Always verify with the manual for the specific system.
Common Wear Items:
Clutch wear, hydraulic system leaks (pump seals, cylinder seals), PTO clutch engagement issues, and potential electrical component failures due to age are common.
Routine Checks:
Regular inspection of all hydraulic hoses and fittings, exhaust system, and cooling fan drive is crucial.
