Manual Value:
An indispensable resource for owners and mechanics of vintage Armstrong Siddeley vehicles
Uniqueness:
Directly sourced from Armstrong Siddeley's official dealer network, ensuring authenticity and accuracy
Official Source:
Identical manual issued to Armstrong Siddeley dealers and technicians
Comprehensiveness:
Covers all major mechanical and electrical systems of the 16 HP and 18 HP models
User Friendliness:
Suitable for both novice enthusiasts and experienced professionals, aided by interactive indexing
Primary Focus:
Comprehensive workshop and service procedures
Target Audience:
Armstrong Siddeley Dealerships, Technicians, Home Workshop Mechanics
Estimated Pages:
N/A (Digital Manual - content driven)
Type:
Service Manual / Workshop Manual
Engine Mechanical:
Engine overhaul, decarbonising, valve grinding, lubrication, cooling system
Fuel System:
Carburettor service, adjustment, and overhaul
Drivetrain:
Clutch assembly, gearbox (transmission) service and overhaul, rear axle servicing
Suspension:
Front wheel suspension maintenance and repair
Braking System:
Brake system diagnostics, service, and repair
Steering System:
Steering gear maintenance and adjustment
Electrical System Components:
Battery, Dynamo (Generator), Starter Motor, Distributor, Control Box Regulator
Electrical System Accessories:
Headlamps, Rear Number Plate Illumination, Indicators, Windscreen Wiper, Electric Horn
Maintenance Tasks:
Lubrication schedules, fluid checks, general upkeep
Troubleshooting:
Diagnostic procedures for common faults and issues
Repair Operations:
Step-by-step instructions for component overhaul and replacement
Technical Adjustments:
Carburettor tuning, ignition timing, brake adjustments
Depth Of Coverage:
Comprehensive, suitable for full engine rebuilds and complex system repairs
Diagnostic Capability:
Detailed diagnostic flowcharts and symptom-based troubleshooting
Specification Detail:
Includes precise technical service data and specifications for all covered systems
Engine Type 16Hp:
Inline 6-cylinder, Overhead Valve (OHV)
Engine Type 18Hp:
Inline 6-cylinder, Overhead Valve (OHV)
Bore Stroke 16Hp Approx:
75.0 mm x 100.0 mm (approximate, specific details in manual)
Bore Stroke 18Hp Approx:
77.8 mm x 100.0 mm (approximate, specific details in manual)
Displacement 16Hp Approx:
2.6 litres (1598 cc / 16 HP RAC rating)
Displacement 18Hp Approx:
2.8 litres (1781 cc / 18 HP RAC rating)
Horsepower 16Hp Approx:
60-70 BHP (estimated, dependent on tuning and specific model)
Horsepower 18Hp Approx:
70-80 BHP (estimated, dependent on tuning and specific model)
Carburettor Type:
Typically Single or Twin Zenith or SU Carburettors (specifics in manual)
Fuel Type:
Petrol (Gasoline)
Oil Type Recommendation:
Refer to manual for specific period-correct oil grades (likely straight mineral oils, e.g., SAE 30 or 20W-50)
Oil Capacity Approx:
4-5 Litres (approximate, confirm in manual)
Transmission Type:
Manual Synchromesh Gearbox
Gear Ratios:
Specific ratios detailed within the manual
Optional Gearbox:
Some later models may have featured options like the Armstrong Siddeley preselector gearbox (confirm applicability for specific chassis numbers within the manual).
Clutch Type:
Single Dry Plate Clutch
Gearbox Oil Recommendation:
Refer to manual for specific period-correct gear oil grades (e.g., EP 90)
Wheelbase:
Varies slightly between 16 HP and 18 HP models, detailed in manual
Track Width:
Varies, detailed in manual
Kerb Weight Approx:
1300-1500 kg (approximate, depending on body style)
Safety Certification:
N/A (No modern crash test ratings for this era)
Braking System Type:
Hydraulic drum brakes on all wheels
Parking Brake:
Mechanical parking brake, typically acting on rear wheels
Seatbelts:
Not standard equipment for this era; installation may be a modification
Body Construction:
Body-on-frame construction with coachwork by various coachbuilders (e.g.,Armstrong Siddeley itself, or others)
Oil Change Interval:
Typically every 3,000-5,000 miles or annually (refer to manual for precise recommendations)
Grease Points:
Regular greasing of chassis lubrication points is crucial (details and schedule in manual)
Coolant Type:
Water and anti-freeze mix, type dependent on era and climate considerations (manual will specify)
Brake Fluid Type:
Likely DOT 3 or DOT 4 mineral oil based fluid, or specific period fluid (critical to verify in manual)
Common Wear Items:
Engine oil leaks, clutch wear, brake system maintenance, suspension bushings
Electrical System Challenges:
Age-related degradation of wiring insulation, dynamo charging issues, contact point wear in distributors and control boxes
Technical Specifications Summary
Ignition Timing:
Specific ignition timing settings for both engine variants are provided in the manual
Valve Clearances:
Specific cold valve clearances for intake and exhaust valves are detailed
Manufacturer Origin:
British, established in 1902
Brand Reputation:
Known for producing robust, well-engineered, and luxurious motor cars
Post War Context:
Armstrong Siddeley's post-war models built on pre-war engineering principles, focusing on durability and comfort
16Hp 18Hp Differentiation:
The 16 HP and 18 HP models represent variations in engine displacement and power output within the same chassis and body platform, catering to different market segments or power requirements.
Production Peak:
The 1945-1954 period covers Armstrong Siddeley's post-war revival and the introduction of their larger engine models before the transition to the Sapphire range.
