🏷️ Basic Information

Make:

Harley-Davidson

Model:

Dyna

Year:

2008

Vin Prefix:

1HD1

👋 Introduction

Positioning:

The 2008 Harley-Davidson Dyna series represented a blend of classic cruiser styling with modern performance and features, catering to riders who desired a versatile motorcycle for both cruising and spirited riding.

Competitors:

Competed against models from Indian Motorcycle, Victory Motorcycles, and custom builders, as well as other cruiser segments from Japanese manufacturers.

Drivetrain:

Twin Cam 96 engine with a 6-speed Cruise Drive transmission was standard, offering increased power and smoother highway cruising compared to previous generations.

Ergonomics:

Dyna models were known for their accessible riding position, often featuring forward controls and a lower seat height compared to Softail models.

Styling:

Characterized by its exposed engine, bobbed fenders on some models, and a generally more 'raw' aesthetic compared to other Harley-Davidson families.

📋 Manual Details

Covered Models:

All Harley-Davidson Dyna models for 2008 (e.g., Super Glide, Low Rider, Street Bob, Fat Bob, Wide Glide, Sportster - *Note: While the product name specifies Dyna, Harley-Davidson manuals often encompass related models or specific VIN ranges. This manual is explicitly for Dyna.*)

Total Pages:

1033

Type:

Workshop Service Manual / Repair Manual

Language:

English

Format:

PDF (Portable Document Format)

📖 Manual Coverage

Engine:

Complete engine disassembly, assembly, diagnostics, and repair for all 2008 Dyna engine variants (likely Twin Cam 96 / 1584cc).

Transmission:

Service and repair procedures for the 6-speed Cruise Drive transmission.

Fuel System:

Fuel injection system (EFI) diagnostics, component replacement, and tuning considerations.

Electrical System:

Wiring diagrams, component testing, troubleshooting for lighting, ignition, starting, charging, and accessory systems.

Brakes:

Front and rear brake system service, including hydraulic components, pads, rotors, and bleeding procedures.

Suspension:

Front fork (e.g., Showa) and rear shock absorber service, adjustment, and overhaul.

Frame And Bodywork:

Frame inspection, body panel removal/installation, fenders, fuel tank, seat assembly.

Wheels And Tires:

Wheel bearing service, tire mounting and balancing, spoke maintenance (if applicable).

Clutch:

Clutch system service, adjustment, and component replacement.

Exhaust System:

Exhaust component inspection, removal, and installation.

Cooling System:

Engine oil cooling system maintenance and inspection (air-cooled with oil cooler).

Routine Maintenance:

Oil changes, filter replacement, spark plug service, air filter cleaning/replacement, chain adjustment (if applicable).

Troubleshooting:

Diagnostic flowcharts and procedures for common and uncommon issues across all systems.

Disassembly Assembly:

Detailed, step-by-step instructions for dismantling and reassembling major vehicle components.

Component Replacement:

Instructions for replacing parts such as starter motor, alternator, fuel pump, brake calipers, etc.

Special Tools:

Identification and usage instructions for specialized tools required for specific repair procedures.

Torque Specifications:

Precise torque values for all critical fasteners to ensure correct assembly and prevent damage.

Wiring Diagrams:

Comprehensive and detailed wiring schematics for all electrical systems.

Depth:

Comprehensive, covering everything from basic routine maintenance to complete engine and transmission overhauls. Includes in-depth diagnostics and repair for all factory systems.

📊 Manual Specifications

File Type:

PDF

Searchability:

Likely text-searchable, enabling quick access to specific topics.

Quality:

High-resolution digital scans, suitable for printing individual pages or the entire manual.

Binding:

N/A (Digital PDF)

Paper:

N/A (Digital PDF)

⚙️ Engine Specifications

Engine Type:

Air-cooled, Twin Cam 96 V-Twin

Displacement:

96 cubic inches (1584cc)

Bore X Stroke:

3.75 in. x 4.38 in. (95.25 mm x 111.25 mm)

Compression Ratio:

8.8:1

Valve Train:

Overhead valves (OHV), 2 valves per cylinder, pushrod-actuated

Horsepower:

Approx. 70-75 HP (subject to specific model and tuning)

Torque:

Approx. 88-92 ft-lbs @ 3500 RPM (subject to specific model and tuning)

Fuel Delivery:

Electronic Sequential Port Fuel Injection (ESPFI)

Fuel Type:

Premium unleaded gasoline, 91 octane or higher recommended

🔧 Transmission

Transmission Type:

6-speed Cruise Drive Manual Transmission

Clutch:

Multi-plate, wet, diaphragm spring

Final Drive:

Belt Drive, 32/66 ratio

Gear Ratios:

1st: 9.271, 2nd: 6.063, 3rd: 4.475, 4th: 3.774, 5th: 3.231, 6th: 2.790

📐 Dimensions

Wheelbase:

Varies by model (e.g., approx. 64.0-65.7 inches)

Seat Height Laden:

Varies by model (e.g., approx. 25.8-27.0 inches)

Dry Weight:

Varies by model (e.g., approx. 630-660 lbs)

Gross Vehicle Weight Rating:

Varies by model (typically around 1000-1100 lbs)

🛡️ Safety Features

Safety Standards:

As a motorcycle, specific crash ratings like automotive NCAP are not applicable. Focus is on rider protection and vehicle stability.

Braking System:

Hydraulic disc brakes front and rear. ABS was an optional feature on some 2008 Dyna models.

Lighting:

Halogen headlight, LED tail light, incandescent front and rear turn signals.

Frame Construction:

Steel tubular frame with cast aluminum swingarm.

Suspension Stability:

Dual rear shock absorbers and telescopic front forks designed for stability and controlled ride.

💡 Technology Features

Audio System:

Some Dyna models offered factory-installed audio systems (radio/CD player) with handlebar-mounted controls and speakers.

Display:

Analog speedometer and tachometer, with a multi-function LCD display for odometer, trip meter, gear indicator, and fuel level.

ABS:

Anti-lock Braking System (ABS) was an available option on select 2008 Dyna models, enhancing braking control.

Diagnostics:

On-board diagnostics (OBD-II) capabilities for engine management and fault code retrieval, accessed via the diagnostic port.

🔧 Maintenance

First Service:

Typically at 1,000 miles or 2 months (whichever comes first) for engine oil change, primary chain case oil, and inspection.

Regular Service:

Intervals vary by component but generally include oil changes every 5,000 miles, spark plug replacement every 10,000-15,000 miles, and more comprehensive checks at 10,000 and 20,000-mile intervals.

Engine Oil:

Harley-Davidson Genuine V-Twin 20W-50 (or equivalent API SG or higher specification oil).

Primary Chain Case Oil:

Harley-Davidson Genuine Formula+ (or equivalent heavy-duty transmission fluid).

Transmission Oil:

Harley-Davidson Genuine Formula+ (or equivalent heavy-duty transmission fluid).

Brake Fluid:

DOT 4 brake fluid.

Coolant:

N/A (Air-cooled engine, but oil cooler circuit uses engine oil).

Cam Chain Tensioners:

Early Twin Cam engines (pre-2007) had issues with hydraulic cam chain tensioners wearing out. 2008 models generally feature improved tensioners, but inspection is still recommended.

Crankshaft Position Sensor:

Occasional failures can lead to starting issues or stalling. The manual will detail testing procedures.

Belt Drive Tension:

Proper belt tension is crucial for longevity; the manual will specify adjustment procedures.

📚 Vehicle History

Heritage:

Harley-Davidson, founded in 1903, boasts a rich history in American motorcycling, synonymous with freedom, individuality, and the open road.

Dyna Lineage:

The Dyna platform, introduced in 1991, evolved from earlier Harley-Davidson models, characterized by its traditional styling, rubber-mounted engine for reduced vibration, and dual rear shock absorbers.

2008 Updates:

The 2008 model year saw the widespread adoption of the Twin Cam 96 engine and the 6-speed Cruise Drive transmission across the Dyna line, significantly enhancing performance and refinement.

Manufacturing Location:

Assembled in York, Pennsylvania, and Milwaukee, Wisconsin, USA.

🏆 Awards & Recognition

Industry Acclaim:

While specific awards for the 2008 Dyna models are not as widely publicized as contemporary car awards, the Dyna platform has consistently received positive reviews for its versatility and iconic styling within the motorcycle community.