🏷️ Basic Information

Make:

Volvo BM

Model:

425 Traktor

👋 Introduction

Positioning:

Essential resource for owners, mechanics, and parts suppliers of the Volvo BM 425 Traktor, a utility tractor known for its robustness and versatility in agricultural and industrial applications.

Competition:

Complements workshop manuals by providing precise part identification essential for maintenance and repair. It serves as a critical reference against general tractor manuals of the era.

Features:

Comprehensive exploded views, detailed part listing, high-quality reproduction of original documentation.

Completeness:

Svensk omplett (Swedish complete) designation implies comprehensive coverage of the entire tractor's components as originally documented by Volvo BM.

📋 Manual Details

Coverage:

Complete parts catalog for Volvo BM 425 Traktor

Pages:

45

Type:

Parts Catalog (Reservdelskatalog)

Language:

Swedish (Svensk)

Format:

PDF

📖 Manual Coverage

Systems:

Engine, transmission, chassis, hydraulics, electrical, operator's station, implements, components

Component Identification:

Detailed breakdown of all major and minor components, including fasteners, seals, gaskets, and individual sub-assemblies.

Hydraulics System:

Detailed parts for the tractor's hydraulic lift system, including pumps, cylinders, control valves, and hydraulic lines.

Procedures:

Parts identification, component assembly, cross-referencing of parts

Assembly Order:

Illustrates the correct order and relationship of parts during assembly, crucial for maintenance and repair.

Identification Of Obsolete Parts:

Crucial for finding replacements for parts no longer manufactured, often requiring cross-referencing or custom fabrication.

Depth:

Detailed part identification with exploded diagrams, suitable for parts sourcing and assembly verification

Part Number Reference:

Provides OEM part numbers for all listed components, essential for ordering correct replacements.

📊 Manual Specifications

Format Details:

Digital PDF, optimized for viewing and printing

Searchability:

PDF format may offer text search capabilities if the OCR layer is present and accurate, greatly enhancing usability.

Quality:

High quality, featuring clear and detailed exploded diagrams (sprängskisser)

Diagram Clarity:

Exploded diagrams (sprängskisser) are specifically called out as being numerous and of high quality, indicating excellent clarity for identification.

Binding:

N/A (Digital PDF format)

Paper:

N/A (Digital PDF format)

⚙️ Engine Specifications

Engine Model:

Likely based on Volvo's reliable diesel engine offerings of the period, often a 4-cylinder diesel. Specific model designation not provided but expected to be robust and simple.

Bore Stroke:

Specific bore and stroke data would be detailed within the manual or associated workshop manuals, but based on its likely engine family, it would be in the typical range for a medium-duty diesel tractor engine.

Cooling System:

Liquid-cooled system utilizing a radiator, fan, water pump, and thermostat. Part numbers for all these components would be listed.

Horsepower Range:

Typically in the 30-50 HP range for this class of utility tractor from the era.

Torque Curve:

Torque figures and power curves are typically found in workshop manuals, not parts catalogs. However, the engine is designed for robust torque at lower RPMs suitable for pulling agricultural implements.

Fuel Type:

Diesel

🔧 Transmission

Type:

Likely a manual transmission with multiple forward and reverse gears, possibly a synchronized gearbox for ease of use.

Options:

Optional PTO (Power Take-Off) configurations and potentially creeper gears might have been available.

Features:

Heavy-duty construction for agricultural loads.

Clutch Type:

Likely a single or dual-plate dry clutch mechanism for engaging/disengaging the transmission.

📐 Dimensions

Wheelbase:

Estimates based on typical tractors of this era and size: likely around 1800-2000 mm.

Track Width:

Adjustable or standard rear track width typical for its class.

Length:

Estimated length between 3000-3500 mm, depending on whether front linkage or weights are included.

Height:

Height to the top of the steering wheel or operator's seat typically around 1500-1700 mm.

Operating Weight:

Estimated operating weight typically in the 1500-2000 kg range.

Max Gross Weight:

Not specified, but would depend on tractor configuration and any attached implements.

🛡️ Safety Features

Safety Standards:

Built to relevant safety standards of its production era; modern safety features are not applicable. Emphasis on robust mechanical design.

Active Safety:

Effective braking system, stable chassis design.

Passive Safety:

Operator protection via sturdy seat, potentially integrated guards for moving parts. PTO shielding is critical.

💡 Technology Features

Infotainment System:

N/A - This tractor predates modern infotainment systems. Basic controls for engine speed, PTO engagement, and hydraulic functions.

Driver Assistance Features:

N/A - Basic mechanical controls, no electronic driver assistance features.

Connectivity:

N/A

🔧 Maintenance

Engine Oil Change:

Typical for the era: every 100-250 operating hours, depending on operating conditions and oil quality. Refer to specific Volvo BM service bulletins if available.

Transmission Oil Change:

Typically every 500-1000 operating hours for gearbox and final drive oils. Consult specific service manual.

Engine Oil Type:

API CD or equivalent diesel engine oil, viscosity grade likely SAE 30 or 15W-40 depending on climate.

Hydraulic Fluid Type:

Universal Tractor Transmission Oil (UTTO) or a dedicated hydraulic oil meeting Volvo's specifications of the era. Likely ISO VG 32 or 46.

Transmission Fluid Type:

Typically shared with hydraulic fluid in UTTO systems, or a specific gear oil if separate.

Coolant Type:

Ethylene glycol-based antifreeze, mixed with distilled water, likely a 50/50 ratio.

Gear Oil Viscosity:

For manual gearbox and differential, SAE 90 or SAE 80W-90 gear oil is typical. UTTO often covers transmission duties as well.

Common Problems:

Wear on clutch components, potential for hydraulic pump or cylinder leaks, electrical system aging (wiring insulation degradation), wear in the PTO clutch and transmission gears due to age and usage.

Brake System:

Drum or disc brake wear, potential for seized caliper or wheel cylinder components due to moisture ingress and age.

Oil Filter:

Requires referencing the parts catalog for specific part numbers. Cross-referencing with aftermarket filter manufacturers based on engine model and dimensions would be necessary.

Fuel Filter:

Requires referencing the parts catalog for specific part numbers. Volvo BM part numbers for fuel filters would be crucial.

📚 Vehicle History

Heritage:

Volvo BM (now part of Volvo Group, with agricultural machinery operations later integrated into Valtra) has a long history of producing robust and reliable agricultural and construction equipment.

Evolution:

The 425 Traktor represents a segment of Volvo BM's utility tractor line designed for a broad range of agricultural tasks. Specific evolution details require deeper historical research into Volvo BM's tractor development.

Model Context:

The 425 likely sits within Volvo BM's utility tractor range, offering a balance of power and maneuverability for general farm work and light industrial tasks common in Sweden and export markets.

Production Period:

Likely produced in the mid to late 20th century, a period of significant development in agricultural mechanization.

🏆 Awards & Recognition

Awards:

Specific awards for the Volvo BM 425 Traktor are not widely documented in general automotive resources. Its recognition would be based on its performance and reliability in agricultural and industrial settings of its time.