Engine:
        
        
            Engine overhaul, maintenance, troubleshooting, fuel system, lubrication, cooling system, starting system
        
     
    
        
            Transmission:
        
        
            Gearbox overhaul, clutch service, PTO operation, differential, final drives
        
     
    
        
            Hydraulics:
        
        
            Hydraulic system diagnosis, pump service, cylinder repair, control valve operation, hydraulic fluid specifications
        
     
    
        
            Electrical:
        
        
            Wiring diagrams, lighting system, starting and charging system, instrument panel, accessory circuits
        
     
    
        
            Chassis And Body:
        
        
            Front axle, steering system, braking system, rear axle, hitch system, operator station, body panels
        
     
    
    
        
            Maintenance:
        
        
            Scheduled maintenance charts, lubrication points, filter replacement, fluid level checks
        
     
    
        
            Troubleshooting:
        
        
            Diagnostic flowcharts for common problems, symptom-based fault finding
        
     
    
        
            Repair:
        
        
            Step-by-step repair instructions for all major components and systems
        
     
    
        
            Overhaul:
        
        
            Complete engine, transmission, and hydraulic system overhaul procedures
        
     
    
    
        
            Depth:
        
        
            Comprehensive, suitable for professional technicians and experienced DIY mechanics
        
     
 
    
    
    
        
            Engine Type:
        
        
            David Brown AD Series (likely AD4/55 or similar variant, based on commonality)
        
     
    
        
            Displacement:
        
        
            Typically around 3.9 liters (236 cubic inches) for this series, but requires manual confirmation.
        
     
    
        
            Cylinders:
        
        
            4-cylinder, naturally aspirated diesel
        
     
    
    
        
            Horsepower Rating:
        
        
            Advertised PTO horsepower typically in the 60-70 HP range (actual specifications depend on specific engine tune and regulations).
        
     
    
    
        
            Injection System:
        
        
            Bosch inline injection pump (typical for the era)
        
     
 
    
    
    
        
            Infotainment System:
        
        
            Basic analog instrumentation (tachometer, engine temperature, oil pressure, fuel gauge). No modern infotainment system.
        
     
    
    
        
            Driver Assistance Features:
        
        
            Mechanical power steering (often optional or integrated), differential lock. No electronic driver assistance.
        
     
 
    
    
    
        
            Engine Oil Change:
        
        
            Typically every 250 hours or annually, but specific interval must be confirmed from manual.
        
     
    
        
            Air Filter Service:
        
        
            Check at 100 hours, replace as needed or annually. Dry element type.
        
     
    
    
        
            Engine Oil Type:
        
        
            API CD or higher, SAE 15W-40 or 10W-30 (cold climates). Capacity approximately 8.2 liters (8.7 US quarts).
        
     
    
        
            Hydraulic Fluid Type:
        
        
            David Brown HTMA Type C or equivalent (e.g., CAT TO-2 specification, typically an ISO VG 46 hydraulic oil).
        
     
    
    
        
            Common Wear Points:
        
        
            Wear in the clutch, PTO clutch pack, hydraulic pump and valve spools, steering box, and front axle kingpins are common on older units.
        
     
    
        
            Engine Idling Problems:
        
        
            Can be related to fuel filter clogging, injection pump timing, or governor issues.