Engine Mechanical:
Detailed coverage of engine assembly, disassembly, components (pistons, crankshaft, cylinder head, valves), timing, cooling system, lubrication system, and troubleshooting.
Engine Electrical:
Includes wiring schematics, diagnostic procedures, starter system, charging system (alternator/generator), ignition system, lighting, and accessory electrical circuits.
Fuel System:
Comprehensive information on fuel tank, fuel lines, fuel pump, filters, and carburetion (if applicable) or injection systems, including adjustments and troubleshooting.
Transmission Manual:
In-depth coverage of the manual transaxle, including gear shifting mechanisms, clutch operation, input/output shafts, bearings, seals, and repair procedures.
Brake System:
Details on brake system components (master cylinder, wheel cylinders, brake shoes/pads, drums/rotors), hydraulic lines, adjustments, bleeding procedures, and troubleshooting.
Steering System:
Information on steering linkages, steering column, steering gearbox/pump (if hydraulic), and repair or adjustment procedures.
Suspension System:
Coverage of front and rear suspension components, shock absorbers, springs, bushings, and related adjustments or replacements.
Body Electrical:
Includes troubleshooting for lights, indicators, dashboard instrumentation, wipers, and other electrical accessories.
Emission Control:
Details regarding any emission control systems specific to the 1490 model and its production region will be covered, including potential adjustments or maintenance.
Driveshaft And Axle:
Information on front and rear axle assemblies, differential, drive shafts, universal joints, and their maintenance or repair.
Body Interior Exterior:
Covers body panels, fenders, cab (if fitted), operator seat, controls, and general cosmetic repairs or adjustments.
Restraint System:
This likely refers to seat belts and operator safety features, with guidance on their inspection and maintenance.
Maintenance:
Routine maintenance procedures such as fluid changes, lubrication, filter replacements, and general inspections.
Troubleshooting:
Systematic diagnostic procedures for identifying and resolving common and uncommon issues across all covered systems.
Repair:
Step-by-step instructions for disassembling, repairing, and reassembling major vehicle components and systems.
Specifications:
Inclusion of detailed technical specifications, tolerances, torque values, and fluid capacities necessary for accurate repairs and maintenance.
Rebuilding:
The manual likely contains detailed procedures for rebuilding major components like the engine, transmission, and hydraulic systems.
Depth:
Comprehensive, covering from basic troubleshooting and maintenance to complete overhauls and component rebuilds, suitable for both DIY enthusiasts and professional mechanics.
Diagnostic Tools:
While not explicitly stated, a comprehensive workshop manual would often guide the user on specialized tools or diagnostic methods required for certain repairs.
Engine Type:
Likely a diesel engine, typical for David Brown tractors of this era. Specific engine series (e.g., ADEC, CC) would be detailed within the manual.
Engine Family:
Likely part of the David Brown engine series from that period, which were known for their robust design and simplicity.
Horsepower Range:
Specific HP and torque figures are not provided but are detailed in the manual. The 1490 typically falls into the 70-90 HP range.
Torque Specifications:
Detailed torque values for engine components (cylinder head bolts, main bearings, connecting rod bolts) are provided in the manual.
Injection System:
Details on the specific diesel injection pump and injectors, including timing and servicing, are within the manual.
Engine Oil Change Interval:
The manual will specify intervals for engine oil and filter changes, typically in the range of 100-250 operating hours, depending on operating conditions.
Transmission Fluid Change Interval:
Intervals for transmission and hydraulic fluid changes will be detailed, usually around 500-1000 operating hours. Specific fluid types are critical and listed.
Engine Oil Type:
The manual will recommend specific SAE viscosity grades for diesel engine oil (e.g., SAE 30, 15W-40) and API service categories.
Hydraulic Fluid Type:
Specific hydraulic fluid or tractor transmission fluid (UTF) types and specifications will be listed in the manual.
Coolant Specifications:
Recommended coolant type (e.g., ethylene glycol-based) and mixture ratio for the cooling system will be detailed.
Grease Type:
Specification for chassis lubrication points (grease fittings) will be provided, likely an all-purpose lithium-based grease.
Common Wear Items:
The manual often hints at common wear points such as clutch wear, hydraulic pump performance degradation, and potential issues with the transmission synchronizers over time.
Electrical System Common Faults:
Poor connections, corrosion on terminals, and aging wiring insulation are common issues that the manual's electrical troubleshooting section will address.
