Primary Coverage:
Repair, maintenance, adjustments, diagnostics, disassembly, assembly of Valtra Valmet 6650, 6800, 6850 tractors.
Secondary Coverage:
Troubleshooting, component replacement, specifications, special tools, safety precautions.
Type:
Workshop Service Repair Manual
Engine:
Comprehensive coverage of engine operation, diagnosis, repair, overhaul, and component specifications.
Transmission:
Detailed procedures for transmission servicing, repair, adjustments, and component replacement (e.g., gearbox, PTO).
Hydraulics:
Information on hydraulic system operation, diagnosis, repair, pump, valve, and cylinder servicing.
Electrical System:
Wiring diagrams, component testing, diagnosis, troubleshooting of electrical circuits, starter, alternator, lighting.
Powertrain:
Coverage of drivetrain components including differential, axles, and drive shafts.
Braking System:
Brake system diagnosis, repair, adjustments, and component servicing (e.g., brake discs, calipers, master cylinder).
Steering System:
Procedures for steering system maintenance, repair, and adjustment of steering components.
Cooling System:
Radiator, thermostat, fan, and coolant system servicing and troubleshooting.
Fuel System:
Fuel injection system servicing, fuel pump, filter replacement, and component calibration.
Exhaust System:
Information on exhaust manifold, muffler, and related components.
Air Intake System:
Air filter servicing, turbocharger inspection (if applicable), and intake manifold.
Operator Station:
Maintenance and repair of the cabin, controls, seat, and operator interface.
Body And Chassis:
Frame, body panels, and associated hardware maintenance and repair.
Maintenance:
Comprehensive periodic maintenance, fluid changes, lubrication, filter replacements, and safety checks.
Troubleshooting:
Detailed diagnostic flowcharts and procedures for identifying and resolving common and uncommon issues.
Removal Installation:
Step-by-step instructions for removing and installing all major components and sub-assemblies.
Disassembly Assembly:
In-depth procedures for taking apart and reassembling components for repair or overhaul.
Adjustments:
Precise instructions for making critical adjustments to various systems (e.g., engine timing, clutch, brakes).
Rebuilding Overhaul:
Detailed instructions for rebuilding major assemblies like engines, transmissions, and hydraulic components.
Depth:
Comprehensive, from basic user maintenance to advanced component-level repair and overhaul.
Detail Level:
Includes pictorial diagrams, exploded views, photos, special tool references, and service data.
Target Audience:
Mechanics, technicians, and DIY users seeking detailed repair information.
Engine Type:
Likely a Valtra-Sisu or similar diesel engine. Specific engine family not detailed in product info, but typically 4-cylinder turbo-diesel for this class.
Horsepower Range:
Expected range for models 6650-6850: approximately 80-110 HP. Specific figures would be detailed within the manual.
Injection System:
Likely mechanical or electronic fuel injection, common for the era of these tractors.
Oil Capacity:
Specific engine oil capacity and type will be detailed in the manual, crucial for engine longevity.
Cooling System:
Capacity and coolant type specification are critical and found within the manual.
Transmission Type:
Likely a synchronized mechanical gearbox with powershift or Hi-Lo options. Specific configurations (e.g., 16x16, 32x32) would be model-dependent.
Powershift Features:
Optional powershift gears for on-the-go shifting, enhancing operational efficiency.
Pto Options:
Likely offered with multiple PTO speeds (e.g., 540, 1000 RPM) with procedures for servicing and engagement.
Transmission Fluid Type:
Specific transmission fluid (e.g., UTTO/STOU) and capacity will be detailed, vital for proper operation and longevity.
Engine Oil Filter:
Typically every 250-500 operating hours, specific to engine model and oil type. Manual will provide exact schedule.
Fuel Filter:
Recommended replacement intervals are critical for preventing fuel system issues; detailed in manual.
Hydraulic Oil Filter:
Regular replacement as per manual recommendations (often tied to hydraulic fluid change intervals) is essential.
Engine Oil:
API CI-4 or higher grade diesel engine oil, viscosity grade dependent on ambient temperature (e.g., 15W-40). Manual will specify exact requirement.
Transmission Hydraulic Fluid:
Universal Tractor Transmission Oil (UTTO) or Super Tractor Oil Universal (STOU) with specific Valtra approvals. Crucial for transmission, hydraulics, and wet brakes.
Coolant:
Ethylene glycol-based antifreeze with appropriate corrosion inhibitors, typically a 50/50 mix with distilled water.
Common Wear Items:
Clutch plates, hydraulic pump seals, PTO clutch packs, and certain electronic components can be wear items requiring eventual service.
Electrical Connectors:
Corrosion or loose connections in wiring harnesses can lead to intermittent electrical faults.
Transmission Shifting:
Issues with powershift engagement or shifting smoothness can indicate wear in the transmission or hydraulic control.
Importance:
Strict adherence to the maintenance schedule outlined in the manual is paramount for maximizing tractor lifespan and reliability.
Special Tools:
Manual references specific Valtra special service tools for accurate adjustments and component servicing, critical for correct repair.