Segment:
Cruiser Motorcycle Segment
Competitors:
Directly competes with other Harley-Davidson models and brands like Indian Motorcycles, custom choppers, and other American V-twin manufacturers.
Model Focus:
The Dyna platform is known for its classic V-twin styling, strong torque delivery, and a more rigid, performance-oriented chassis compared to Softail models.
Manual Value Proposition:
Essential resource for owners and technicians to maintain, diagnose, and repair their 2015 Harley-Davidson Dyna, ensuring optimal performance and longevity.
Engine:
Complete engine disassembly, assembly, tuning, diagnostics, lubrication, cooling systems, fuel injection, ignition systems
Transmission:
Clutch, gearbox, primary drive, final drive, lubrication, diagnostics, repair procedures
Electrical:
Wiring diagrams, charging system, starting system, ignition system, lighting, instrumentation, diagnostics, component testing
Chassis And Suspension:
Frame, front fork, rear shock absorbers, wheel bearings, steering system, brake systems (front and rear), wheel and tire maintenance
Bodywork And Fittings:
Body panels, fenders, fuel tank, seat, handlebars, controls, exhaust system, basic trim component removal and installation
Maintenance:
Scheduled maintenance, fluid changes, filter replacements, lubrication points, brake pad replacement, tire pressure checks
Troubleshooting:
Diagnostic procedures for common issues, fault codes, electrical system troubleshooting, engine performance problems
Repair:
Component repair and replacement for all major systems, engine rebuild procedures, transmission overhaul, suspension repairs, brake system servicing
Diagnostics:
Includes detailed diagnostic flowcharts, DTC (Diagnostic Trouble Code) lookup and interpretation for EFI systems, and component testing procedures.
Wiring Diagrams:
Comprehensive, color-coded wiring diagrams for all electrical systems, facilitating troubleshooting and repairs.
Depth:
Comprehensive: Covers basic maintenance to complete engine and transmission rebuilds, including detailed diagnostic procedures and specifications.
Engine Rebuild:
Detailed specifications and procedures for engine disassembly, component inspection, clearance measurements, piston and ring installation, cylinder honing, crankshaft and connecting rod service, and reassembly.
Suspension And Steering:
Front fork seal replacement, fork oil changes, rear shock absorber servicing, steering head bearing adjustment and replacement.
Wheel And Tire Service:
Wheel bearing replacement, tire removal and installation, wheel balancing, recommended tire pressures.
Completeness:
Official Factory Service Manual, providing complete coverage for all aspects of the motorcycle as intended by the manufacturer.
Engine Family:
Twin Cam 103
Engine Type:
Air-cooled, V-twin, pushrod actuated valves, 45° cylinder angle
Displacement:
1690 cc (103 cubic inches)
Bore X Stroke:
3.875 in. x 4.375 in. (98.4 mm x 111.1 mm)
Torque Rating:
Approx. 98.9 lb-ft @ 3,500 RPM (typical for Twin Cam 103)
Horsepower Rating:
Typically around 70-75 HP (varies by specific model and tuning).
Fuel Delivery:
Electronic Sequential Port Fuel Injection (ESPFI)
Fuel Type:
Premium Unleaded Gasoline (91 octane or higher recommended)
Oil Type:
Harley-Davidson Syn3 (or equivalent API SG, JASO FD, and Harley-Davidson approved synthetic motorcycle oil)
Oil Capacity:
Approx. 4.0 US quarts (3.8 L) with filter change
Type:
6-speed Cruise Drive
Optional Transmissions:
N/A for 2015 Dyna models
Clutch Type:
Wet, multi-plate, hydraulic actuation
Primary Drive:
Plated, wet, multi-plate clutch; chain drive
Transmission Oil Type:
Harley-Davidson transmission lubricant (or equivalent HD Spec formula)
Transmission Oil Capacity:
Approx. 2.8 US quarts (2.6 L)
Length:
Varies by Dyna model (e.g., Low Rider, Street Bob, Fat Bob); typically around 90-93 inches
Wheelbase:
Varies by Dyna model; typically around 63.4 inches
Seat Height:
Varies by Dyna model; typically around 25-27 inches (unladen).
Dry Weight:
Varies by Dyna model; typically around 650-700 lbs
Gross Vehicle Weight Rating:
Typically around 1175 lbs
Audio System:
Some Dyna models may be equipped with a factory-installed radio or audio system, often with AM/FM and potentially MP3/iPod connectivity depending on the specific trim level.
Instrumentation:
Analog speedometer and tachometer, digital odometer, trip meter, fuel gauge, and indicator lights.
ABS Availability:
Anti-lock Braking System (ABS) was an optional feature on many 2015 Dyna models.
Bluetooth:
Factory Bluetooth connectivity was generally not standard on 2015 Dyna models, but aftermarket options are common.
First Service:
1000 miles (1600 km) or 6 months, whichever comes first (includes engine oil and filter change, clutch adjustment, primary chain adjustment, inspection of various components).
Subsequent Service:
Every 5000 miles (8000 km) or 12 months, whichever comes first (includes engine oil and filter change, inspections).
Engine Oil Grade:
Viscosity: 20W-50 for most ambient temperatures. Refer to manual for temperature-specific recommendations.
Primary Chain Case Oil Type:
Harley-Davidson Primary Chaincase Lubricant (or equivalent HD Spec formula)
Primary Chain Case Oil Capacity:
Approx. 3.0 US quarts (2.8 L)
Fork Oil Type:
Typically Harley-Davidson Spectro Heavy Duty 5W or equivalent.
Fork Oil Capacity:
Varies by Dyna model; typically around 12.3 US fl oz (364 ml) per fork leg.
Common Concerns:
Potential for oil leaks (especially around primary cover and derby cover), clutch wear over time, vibration at idle (normal for V-twins), charging system component failures (stator, regulator) can occur with age and mileage.
Tire Wear:
Rear tire wear can be accelerated depending on riding style and tire compound.
Founding:
Founded in 1903, Harley-Davidson is one of America's oldest motorcycle manufacturers.
Dyna Introduction:
The Dyna platform was introduced in 1991, replacing the previous Shovelhead and Evolution Sportster-based chassis. It was designed to offer a more modern, rigid frame with a focus on performance and handling.
Twin Cam Era:
The Twin Cam engine, launched in 1999, became the standard powerplant for Harley-Davidson's Big Twin models, including the Dyna line, offering increased displacement and improved torque.
Manufacturing Location:
Primarily manufactured in the United States.
Discontinuation Of Dyna Line:
The Dyna line was discontinued after the 2017 model year, with its legacy carried on by the Milwaukee-Eight powered Softail models.
