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Harley Davidson Model 42 WLA WL & G Complete Workshop Service Repair Manual 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952

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🏷️ Basic Information Identification Make: Harley-Davidson Model: WLA / WL / G Product Name: Harley Davidson Model 42 WLA WL & G Complete Workshop Service Repair Manual 👋 Introduction Market Position Positioning: Essential resource for owners and restorers of vintage Harley-Davidson WLA, WL, and G series motorcycles, providing detailed factory-level repair information. Competitive Analysis Value Proposition: Offers significant cost savings for DIY repairs and maintenance compared to professional shop rates. Unlocks ability to perform complex tasks with confidence. Key Features Ease Of Use: Features step-by-step instructions and illustrations to simplify complex repair procedures. Accessibility: Downloadable to multiple devices (PC, Mac, tablet, smartphone) for convenient access in the workshop or on the go. 📋 Manual Details Coverage Areas Applicable Years: 1940, 1941, 1942, 1943, 1944, 1945, 1946, 1947, 1948, 1949, 1950, 1951, 1952 Model Variants Covered: WLA (Military), WL (Civilian), G (Servicar/Tricycle) Page Count Estimated Page Count: Highly comprehensive, likely exceeding 500 pages based on typical workshop manuals of this era covering multiple model years and variants. Manual Type Type: Complete Workshop Service and Repair Manual Language Language: English Format Format: Downloadable (PDF compatible) 📖 Manual Coverage Systems Covered Engine: Complete overhaul, tuning, carburetor service, lubrication systems, cooling systems (air-cooled). Transmission: Disassembly, assembly, repair, maintenance, clutch service, gearbox operation. Electrical System: Ignition system, lighting, battery maintenance, wiring diagrams, charging system, starter motor. Chassis And Suspension: Front fork service, rear suspension, wheel bearings, steering head maintenance, frame inspection. Braking System: Brake shoe adjustment, brake drum service, linkage maintenance. Fuel System: Fuel tank maintenance, fuel lines, fuel filters, carburetor rebuilding and adjustment (e.g., Linkert carburetors). Bodywork And Trim: Fender adjustments, saddlebag mounting (where applicable), control lever adjustments, general appearance items. Clutch: Assembly, disassembly, adjustment, replacement of clutch plates and springs. Carburetor Details: Detailed rebuild procedures for Linkert carburetors, including jetting, float level adjustment, and idle speed control. Ignition System Details: Magneto ignition system service, breaker point adjustment, condenser testing, spark plug specifications and gap settings. Wheel And Tire Service: Wheel bearing maintenance, spoke tensioning, tire pressure recommendations, rim strip inspection. Frame And Fork Service: Fork oil replacement and inspection, steering head bearing adjustment and lubrication, frame inspection for cracks or damage. G Model Specifics: Unique procedures and specifications for the Servicar (G model), including its differential and cargo box attachment. Procedures Included Maintenance: Scheduled maintenance tasks, lubrication, cleaning, periodic inspections. Troubleshooting: Diagnosis of common problems, step-by-step troubleshooting guides for performance issues. Repair: Detailed instructions for disassembly, component replacement, reassembly, and adjustment of all major systems. Technical Specifications: Torque specifications, clearances, tolerances, fluid capacities, and critical measurements. Cylinder Head Service: Removal, inspection, decarbonizing, valve seat grinding, valve guide replacement. Piston And Connecting Rod Service: Piston ring replacement, piston inspection, connecting rod bearing checks, and end play. Crankshaft Service: Main bearing inspection and replacement, crankshaft end play adjustment. Generator And Regulator: Generator testing, brush replacement, regulator adjustment (if applicable). Paint And Finish Guidelines: May include guidance on original finishes and paint codes, especially for WLA models. Technical Depth Depth: Comprehensive workshop level, suitable for experienced mechanics and dedicated enthusiasts. Covers detailed component breakdown, rebuild procedures, and diagnostic techniques. Diagnostic Charts: Likely includes diagnostic charts for common performance issues, helping to pinpoint problems quickly. Rebuild Instructions: Provides comprehensive, part-by-part instructions for complete engine, transmission, and other major component rebuilds. 📊 Manual Specifications File Format File Type: Digital (PDF or similar, requires Adobe Reader) Print Quality Quality: High quality scans/reproductions, designed for clarity of text and images, printable. Binding Type Binding: Not applicable for downloadable format; user can print and bind as desired. Paper Type Paper Type: Not applicable for downloadable format. ⚙️ Engine Specifications Primary Engine Type: Air-cooled, four-stroke, side-valve V-twin Displacement: Approximately 74 cubic inches (1213 cc) Bore X Stroke: Typically 3.3125 in x 3.5 in (84.14 mm x 88.9 mm) Compression Ratio: Varies, but typically around 5.5:1 to 6.0:1 Performance Horsepower: Estimated 20-25 HP at the crankshaft, depending on specific configuration and tuning. Torque: Not readily published in modern terms; emphasizes low-end grunt for military applications. Fuel System Carburetor: Primarily Linkert M-series (e.g., M-51, M-74), with specific adjustments and jetting for WLA variants. Fuel Type: Gasoline (lead content would have been common during original production) Engine Internals Valve Timing: Detailed specifications for valve opening and closing points relative to piston position. Oil Pump Specifications: Information on the oil pump's operation and any necessary adjustments or checks. 🔧 Transmission Standard Type: 3-speed constant mesh, foot-shifted with hand clutch lever Optional Variants: The G model (Servicar) had a different transmission, often incorporating a reverse gear, integrated into the unit construction. Features Clutch: Dry, multi-plate, operated by hand lever on the left handlebar. Gear Ratios Ratios: Specific gear ratios for 1st, 2nd, and 3rd gear will be detailed within the manual. 📐 Dimensions Exterior Wheelbase: Approximately 56.5 inches (1435 mm) Length: Approximately 89 inches (2260 mm) Weights...
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Harley Davidson Model 42 WLA WL & G Complete Workshop Service Repair Manual 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952
🏷️ Basic Information
Identification
Make:
Harley-Davidson
Model:
WLA / WL / G
Product Name:
Harley Davidson Model 42 WLA WL & G Complete Workshop Service Repair Manual
👋 Introduction
Market Position
Positioning:
Essential resource for owners and restorers of vintage Harley-Davidson WLA, WL, and G series motorcycles, providing detailed factory-level repair information.
Competitive Analysis
Value Proposition:
Offers significant cost savings for DIY repairs and maintenance compared to professional shop rates. Unlocks ability to perform complex tasks with confidence.
Key Features
Ease Of Use:
Features step-by-step instructions and illustrations to simplify complex repair procedures.
Accessibility:
Downloadable to multiple devices (PC, Mac, tablet, smartphone) for convenient access in the workshop or on the go.
📋 Manual Details
Coverage Areas
Applicable Years:
1940, 1941, 1942, 1943, 1944, 1945, 1946, 1947, 1948, 1949, 1950, 1951, 1952
Model Variants Covered:
WLA (Military), WL (Civilian), G (Servicar/Tricycle)
Page Count
Estimated Page Count:
Highly comprehensive, likely exceeding 500 pages based on typical workshop manuals of this era covering multiple model years and variants.
Manual Type
Type:
Complete Workshop Service and Repair Manual
Language
Language:
English
Format
Format:
Downloadable (PDF compatible)
📖 Manual Coverage
Systems Covered
Engine:
Complete overhaul, tuning, carburetor service, lubrication systems, cooling systems (air-cooled).
Transmission:
Disassembly, assembly, repair, maintenance, clutch service, gearbox operation.
Electrical System:
Ignition system, lighting, battery maintenance, wiring diagrams, charging system, starter motor.
Chassis And Suspension:
Front fork service, rear suspension, wheel bearings, steering head maintenance, frame inspection.
Braking System:
Brake shoe adjustment, brake drum service, linkage maintenance.
Fuel System:
Fuel tank maintenance, fuel lines, fuel filters, carburetor rebuilding and adjustment (e.g., Linkert carburetors).
Bodywork And Trim:
Fender adjustments, saddlebag mounting (where applicable), control lever adjustments, general appearance items.
Clutch:
Assembly, disassembly, adjustment, replacement of clutch plates and springs.
Carburetor Details:
Detailed rebuild procedures for Linkert carburetors, including jetting, float level adjustment, and idle speed control.
Ignition System Details:
Magneto ignition system service, breaker point adjustment, condenser testing, spark plug specifications and gap settings.
Wheel And Tire Service:
Wheel bearing maintenance, spoke tensioning, tire pressure recommendations, rim strip inspection.
Frame And Fork Service:
Fork oil replacement and inspection, steering head bearing adjustment and lubrication, frame inspection for cracks or damage.
G Model Specifics:
Unique procedures and specifications for the Servicar (G model), including its differential and cargo box attachment.
Procedures Included
Maintenance:
Scheduled maintenance tasks, lubrication, cleaning, periodic inspections.
Troubleshooting:
Diagnosis of common problems, step-by-step troubleshooting guides for performance issues.
Repair:
Detailed instructions for disassembly, component replacement, reassembly, and adjustment of all major systems.
Technical Specifications:
Torque specifications, clearances, tolerances, fluid capacities, and critical measurements.
Cylinder Head Service:
Removal, inspection, decarbonizing, valve seat grinding, valve guide replacement.
Piston And Connecting Rod Service:
Piston ring replacement, piston inspection, connecting rod bearing checks, and end play.
Crankshaft Service:
Main bearing inspection and replacement, crankshaft end play adjustment.
Generator And Regulator:
Generator testing, brush replacement, regulator adjustment (if applicable).
Paint And Finish Guidelines:
May include guidance on original finishes and paint codes, especially for WLA models.
Technical Depth
Depth:
Comprehensive workshop level, suitable for experienced mechanics and dedicated enthusiasts. Covers detailed component breakdown, rebuild procedures, and diagnostic techniques.
Diagnostic Charts:
Likely includes diagnostic charts for common performance issues, helping to pinpoint problems quickly.
Rebuild Instructions:
Provides comprehensive, part-by-part instructions for complete engine, transmission, and other major component rebuilds.
📊 Manual Specifications
File Format
File Type:
Digital (PDF or similar, requires Adobe Reader)
Print Quality
Quality:
High quality scans/reproductions, designed for clarity of text and images, printable.
Binding Type
Binding:
Not applicable for downloadable format; user can print and bind as desired.
Paper Type
Paper Type:
Not applicable for downloadable format.
⚙️ Engine Specifications
Primary Engine
Type:
Air-cooled, four-stroke, side-valve V-twin
Displacement:
Approximately 74 cubic inches (1213 cc)
Bore X Stroke:
Typically 3.3125 in x 3.5 in (84.14 mm x 88.9 mm)
Compression Ratio:
Varies, but typically around 5.5:1 to 6.0:1
Performance
Horsepower:
Estimated 20-25 HP at the crankshaft, depending on specific configuration and tuning.
Torque:
Not readily published in modern terms; emphasizes low-end grunt for military applications.
Fuel System
Carburetor:
Primarily Linkert M-series (e.g., M-51, M-74), with specific adjustments and jetting for WLA variants.
Fuel Type:
Gasoline (lead content would have been common during original production)
Engine Internals
Valve Timing:
Detailed specifications for valve opening and closing points relative to piston position.
Oil Pump Specifications:
Information on the oil pump's operation and any necessary adjustments or checks.
🔧 Transmission
Standard
Type:
3-speed constant mesh, foot-shifted with hand clutch lever
Optional
Variants:
The G model (Servicar) had a different transmission, often incorporating a reverse gear, integrated into the unit construction.
Features
Clutch:
Dry, multi-plate, operated by hand lever on the left handlebar.
Gear Ratios
Ratios:
Specific gear ratios for 1st, 2nd, and 3rd gear will be detailed within the manual.
📐 Dimensions
Exterior
Wheelbase:
Approximately 56.5 inches (1435 mm)
Length:
Approximately 89 inches (2260 mm)
Weights
Dry Weight:
Around 500-600 lbs (227-272 kg) for WLA/WL, heavier for G models.
Engine Dimensions
Overall Engine Dimensions:
While specific external dimensions are less critical, the manual will provide internal component dimensions for tolerances.
🛡️ Safety Features
Ratings
Crash Test Results:
Not applicable for this era of motorcycle.
Active Features
Brakes:
Drum brakes front and rear.
Passive Features
Lighting:
Headlight, taillight, and often blackout lighting for military use.
💡 Technology Features
Infotainment
Features:
No modern infotainment systems. Focus is on mechanical and electrical functionality.
Driver Assistance
Features:
No driver assistance technologies; basic mechanical controls.
Connectivity
Features:
No connectivity features; purely mechanical operation.
🔧 Maintenance
Service Intervals
Oil Change:
Frequent oil changes recommended, typically every 1000-2000 miles or seasonally, depending on usage and lubrication system (e.g., total loss or recirculating).
Tune Up:
Regular checks of ignition timing, spark plugs, and carburetor adjustments are crucial for optimal performance.
Fluid Specifications
Engine Oil:
Specific weight oils recommended by Harley-Davidson for the era (e.g., SAE 50 or 60), often in a 'total loss' lubrication system or a recirculating system with a separate oil tank. Manual will detail exact type and capacity.
Transmission Oil:
Specific gear oil type required for the gearbox. Manual will list exact specification.
Known Issues
Carburetion:
Linkert carburetors can be finicky; require precise adjustment. Gumming and clogging are common if fuel is left in the system.
Electrical System:
Original wiring can degrade over time. Proper grounding and insulation are critical. Generator charging output needs regular verification.
Clutch And Transmission:
Wear in the clutch plates and engagement mechanisms, as well as potential wear in the transmission gears and bearings, require periodic inspection and adjustment.
Lubrication:
Ensuring proper oil flow, especially in older engines with total-loss systems, is paramount to prevent premature wear.
📚 Vehicle History
Brand Heritage
Legacy:
Harley-Davidson has a long history of producing robust motorcycles, with the WLA becoming iconic for its role in World War II.
Model Evolution
Development:
The WLA (from 'W' series, 'L' for civilian model, 'A' for Army) was a military adaptation of the civilian WL model, built in large numbers for Allied forces during WWII. The G model was the utilitarian Servicar, often used for light utility tasks and towing.
Production
Production Period:
WL civilian models produced from the 1930s, with WLA production peaking during WWII. The G series also had a long production run.
Wartime Significance:
Tens of thousands of WLA models were produced for military contracts, serving in various theaters of operation.
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