ZETOR Tractor Workshop Manual 4712 4718 5711 5718 5745 5748 6711 6718 6745 6748

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This manual covers Zetor tractors, specifically models 4712, 4718, 5711, 5718, 5745, 5748, 6711, 6718, 6745, and 6748, likely produced from the late 1970s through the 1980s. These utility tractors...

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Taper: Tractor

Distributeur:

UGS: 121758

Mots clés: 4712 4718 5711 5711 6711 5718 5745 5748 6711 6718 6745 6748 Agriculture Tractor Tractors Zetor

Variantes de produits

Description

This manual covers Zetor tractors, specifically models 4712, 4718, 5711, 5718, 5745, 5748, 6711, 6718, 6745, and 6748, likely produced from the late 1970s through the 1980s. These utility tractors are known for their robust construction, simplicity, and affordability, making them suitable for demanding agricultural and industrial applications. The 47xx and 57xx series likely share a common platform, with the '4' designation indicating four-wheel drive variants. Designed with a focus on reliability and ease of maintenance, these tractors offer straightforward mechanical systems and strong low-end torque for heavy load pulling. This comprehensive workshop and service manual provides detailed information for owners, mechanics, and technicians. It covers a wide array of systems including the engine, drivetrain, braking system, steering, electrical equipment, suspension, chassis, body, hydraulics, and ancillaries. Procedures included range from routine maintenance and adjustments to troubleshooting, repair, and complete overhaul of major components. Technical specifications, assembly tool listings, and diagnostic guides are also provided, ensuring that users have the necessary resources to maintain and repair these Zetor tractors effectively.

🏷️ Basic Information

Identification

Make:

Zetor

Model:

4712, 4718, 5711, 5718, 5745, 5748, 6711, 6718, 6745, 6748

Codes

Platform Code:

Likely shared platform for the 47xx and 57xx series, with 574x and 674x indicating four-wheel drive variants.

👋 Introduction

Market Position

Market Segment:

Utility tractors, primarily for agricultural and industrial applications, known for their robust construction and simplicity.

Competitive Analysis

Comparable Models:

Competed with tractors from brands like Ursus, Belarus (MTZ), some Fiat, and earlier generation models from major Western manufacturers, often at a more competitive price point.

Key Features

Design Philosophy:

Focus on reliability, ease of maintenance, and affordability. Designed for demanding operating conditions with straightforward mechanical systems.

📋 Manual Details

Coverage Areas

Systems Covered:

Engine (general hints, cooling, fuel, lubrication, cylinder head, valve gear, crank mechanism), Drivetrain (clutch, gearbox, torque multiplier, synchro-mesh coupling, main transmission housing, portals, front axles), Braking System (hydraulic, hand brake, pneumatic), Steering (ball-type, booster, damper), Electrical Equipment, Suspension, Chassis & Body (hood, safety cab, seat), Hydraulics (lift unit), Ancillaries (compressor, belt-pulley, heating), Wheels & Tires.

Procedures Included:

Removal and re-fitting, troubleshooting, maintenance, overhaul, repair, adjustments, technical specifications, assembly tool listing.

Page Count

Estimated Page Count:

Estimated 500-800 pages based on the extensive section list. Actual count may vary.

Manual Type

Type:

Workshop Manual / Service Manual / Repair Manual

Language

Language:

Likely English, with potential for other European languages depending on original publication. Explicitly stated as English in many listings for this product.

Format

Format:

Likely a digitized format, such as PDF, given the typical online sales model. Printed versions may also exist.

📖 Manual Coverage

Systems Covered

Engine Systems:

Cooling system (radiator, thermostat, water pump, hoses), Fuel system (injection pump, injectors, filters, tank, lines), Lubrication system (oil pump, filter, sump, oil pressure), Cylinder Head (gaskets, valve seats, guides), Valve Gear (valves, springs, rocker arms, pushrods), Crank Mechanism (crankshaft, connecting rods, pistons, bearings).

Drivetrain Systems:

Clutch (twin-purpose operation, pressure plate, friction disc, release bearing), Gearbox (gear selection, bearings, shafts), Torque Multiplier (operation, maintenance), Synchro-mesh Coupling (function, wear inspection), Main Transmission Housing (disassembly, assembly), Portals (reduction gears, housings), Front Axles (standard and driven variants, kingpins, bearings, differentials).

Braking And Steering:

Hydraulic Brakes (master cylinder, wheel cylinders, calipers/drums, lines, fluid specifications), Hand Brake (mechanical linkage, adjustment), Pneumatic Brakes (if equipped, compressor, air lines, actuators), Ball-type Steering Mechanism (steering box, linkages, bearings), Steering Booster (hydraulic pump, cylinder, hoses), Steering Damper (function, replacement).

Electrical And Auxiliary:

Electrical Equipment (starter, alternator, battery, wiring diagrams, lighting, gauges), Safety Cab (structural integrity, mounting, comfort features), Hot-air Heating (components, operation), Seat (adjustment, mounting, suspension), Hydraulic Lift Unit (pump, control valve, cylinders, linkages, fluid type).

Procedures Included

Maintenance And Tune Up:

Scheduled maintenance intervals, fluid checks and changes (engine oil, coolant, hydraulic fluid, transmission oil), filter replacements (oil, fuel, air), lubrication points, spark plug (if applicable) replacement and gap setting, valve clearance adjustments.

Repair And Overhaul:

Detailed step-by-step instructions for disassembly, cleaning, inspection, repair, and reassembly of all major components, including engine internal rebuild, transmission overhaul, clutch replacement, brake system servicing, steering system repair, and hydraulic lift unit refurbishment.

Troubleshooting Diagnostics:

Diagnostic charts and symptom-based troubleshooting guides for common problems related to engine performance, transmission operation, hydraulic system issues, electrical faults, and braking system malfunctions.

Technical Depth

Depth Of Information:

Comprehensive. Covers basic maintenance to full engine and drivetrain rebuilds. Includes detailed torque specifications, clearance measurements, and procedural sequences. Likely includes electrical schematics.

Target Audience:

Professional mechanics, experienced DIY mechanics, farm technicians, and tractor owners seeking in-depth repair and maintenance knowledge.

📊 Manual Specifications

File Format

Digital Format Details:

If PDF, typically high-resolution scans of original manuals. Searchable text capability is dependent on OCR quality. Pages are usually printable.

Print Quality

Print Quality Details:

If printed, expect clear, legible text and diagrams. Binding type is typically robust for workshop environments (e.g., spiral bound or perfect bound).

Binding Type

Binding Type Details:

For physical copies, expect durable binding suitable for frequent use in a workshop environment. Often spiral-bound for lay-flat use.

Paper Type

Paper Type Details:

For physical copies, paper quality is typically thick and durable to withstand grease and workshop conditions.

⚙️ Engine Specifications

Primary Engine

Engine Type:

Likely a naturally aspirated, direct-injection diesel engine. Specific displacement and cylinder count (e.g., 3 or 4 cylinder) would be model-dependent but typically in the 3-4.5 liter range for this series.

Performance

Horsepower Range:

Estimated range of 45-75 HP, depending on the specific model (e.g., 47xx series being lower power, 67xx series being higher).

Torque Characteristics:

Designed for strong low-end torque, characteristic of naturally aspirated diesels, suitable for pulling heavy loads.

Fuel System

Fuel Delivery:

Mechanical in-line or rotary injection pump, with multi-hole injectors. Common fuel type is diesel.

🔧 Transmission

Standard

Gearbox Type:

Manual constant-mesh gearbox with multiple forward and reverse gears (e.g., 8 forward, 4 reverse, or similar configurations). May include a multi-speed rear axle splitter or creeper gear options.

Optional

Transmission Options:

Torque multiplier (a form of underdrive) often available, effectively doubling the number of available gears. Four-wheel drive (4x4 or 4WD) is standard on models designated with '4' (e.g., 5745, 5748, 6745, 6748).

Features

Drive Modes:

Two-wheel drive (2WD) and four-wheel drive (4WD) options, selectable engagement for 4WD.

📐 Dimensions

Exterior

Wheelbase:

Varies by model, but typically in the range of 2000-2300 mm for 2WD and 2WD variants, with 4WD models potentially having slightly longer wheelbases.

Weights

Operating Weight:

Estimated operating weight between 2000 kg and 3000 kg, depending on configuration (e.g., cab, 4WD).

Towing Capacity:

Not explicitly stated in product info, but typically rated for substantial towing loads appropriate for their engine size and chassis.

🛡️ Safety Features

Ratings

Safety Standards:

Designed to meet national and international safety standards for agricultural tractors of its era. Features like safety cab and robust braking systems are key.

Active Features

Braking Features:

Hydraulic service brakes (disc or drum, depending on model and year), mechanical hand brake. Pneumatic brake connections might be present for trailer braking.

Passive Features

Operator Protection:

Available safety cab provides ROPS (Roll Over Protective Structure) and FOPS (Falling Object Protective Structure) protection, along with improved visibility and operator comfort.

💡 Technology Features

Infotainment

Infotainment System:

Basic instrumentation: speedometer, tachometer, fuel gauge, temperature gauge, oil pressure warning light. No modern infotainment systems.

Driver Assistance

Driver Assistance Features:

Limited to power steering (on some models) and potentially a more advanced braking system. No electronic driver aids.

Connectivity

Connectivity Options:

None.

🔧 Maintenance

Service Intervals

Engine Oil Change:

Typically every 250-500 operating hours, depending on operating conditions and oil type. Manual will specify exact interval and oil grade.

Coolant Change:

Recommended every 2 years or as specified by coolant manufacturer, usually involving a full flush and refill.

Fuel Filter Replacement:

Often recommended at every oil change or every 250 hours, and more frequently in dusty conditions.

Fluid Specifications

Engine Oil Type:

Likely API CD or CE equivalent multi-grade diesel engine oil, e.g., SAE 15W-40 or 10W-30. Specific viscosity depends on ambient temperature. Manual will specify the precise specification and capacity.

Hydraulic Fluid Type:

Universal tractor transmission oil (UTTO) or a compatible hydraulic/transmission fluid, e.g., SAE 10W-30 or 15W-30. Manual will detail type and capacity.

Gearbox Oil Type:

Gear oil, typically SAE 90 or 80W-90 GL-4 or GL-5. Manual will confirm grade and capacity.

Known Issues

Common Wear Items:

Clutch wear, synchronizer ring wear in gearbox, hydraulic pump and seal wear, front axle kingpin and bearing wear, potential for water ingress into electrical components.

Maintenance Recommendations:

Regular lubrication of all grease points, diligent cleaning of radiators and air filters, regular checking of all fluid levels, and timely replacement of worn parts are crucial for longevity.

📚 Vehicle History

Brand Heritage

Manufacturer:

Zetor is a Czech tractor manufacturer with a long history dating back to the post-WWII era, known for producing reliable and robust agricultural machinery.

Model Evolution

Series Context:

These models represent a generation of Zetor tractors that were widely exported and known for their value proposition. The 47xx, 57xx, and 67xx series often shared many components and design principles.

Production

Production Era:

Likely produced from the late 1970s through the 1980s and possibly into the early 1990s, aligning with the evolution of agricultural mechanization in Eastern Europe and export markets.

🏆 Awards & Recognition

Recognitions

Industry Awards:

While specific awards are not detailed for this manual, Zetor tractors historically gained recognition for their durability, affordability, and suitability for challenging conditions in numerous markets.