Target Audience:
Enthusiasts, DIY mechanics, independent repair shops working on classic Mercedes-Benz vehicles.
Value Proposition:
Enables owners to perform their own maintenance and repairs, saving significant costs and maintaining vehicle value.
Competitors:
Original Mercedes-Benz factory service manuals (often expensive and difficult to find), Haynes/Chilton manuals (may lack the depth and detail of factory procedures).
Ease Of Use:
Step-by-step instructions and pictures make complex procedures accessible.
Accessibility:
Downloadable to PC, Mac, tablets, and smartphones for convenient access.
Ownership Permanence:
Once downloaded, the manual is yours to keep forever.
Years Covered:
1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976
Models Covered:
All W114 and W115 variants, including all engine types, transmission options, and trim levels.
Estimated Pages:
Extensive, comprehensive coverage implies several hundred pages (exact number not specified, but typical for a complete workshop manual).
Type:
Complete Workshop Service and Repair Manual
Format:
Downloadable Digital File (PDF)
Engine Mechanical:
Engine overhaul, disassembly, assembly, internal components, cooling system, lubrication system, fuel system, exhaust system.
Engine Performance:
Ignition system, carburation/fuel injection, emissions control, engine tuning and diagnostics.
Transmission:
Manual and automatic transmission service, overhaul, operation, and troubleshooting.
Drivetrain:
Clutch, driveshaft, differential, axles, and wheel bearings.
Suspension:
Front and rear suspension components, shock absorbers, springs, bushings, alignment procedures.
Steering:
Steering gear, linkage, power steering system, troubleshooting.
Brakes:
Brake system diagnosis, hydraulic components (master cylinder, wheel cylinders, calipers), brake pads/shoes, brake lines, parking brake, troubleshooting.
Electrical System:
Wiring diagrams, battery, alternator, starter motor, lighting system, gauges, switches, fuses, relays, troubleshooting.
Body And Chassis:
Body panel repair, doors, windows, locks, trim, weatherstripping, frame and chassis components.
Heating And Air Conditioning:
HVAC system components, operation, maintenance, and troubleshooting.
Maintenance:
Scheduled maintenance, oil changes, filter replacements, tune-ups, lubrication.
Diagnostics:
Troubleshooting guides, symptom-based diagnostics, common fault finding.
Repair:
Step-by-step repair procedures for all major and minor components.
Overhaul:
Complete engine, transmission, and differential overhaul procedures.
Installation:
Component installation and replacement guides.
Depth:
Comprehensive; covers everything from routine maintenance and minor repairs to complete engine rebuilds and advanced diagnostics.
File Type:
PDF (Portable Document Format)
Searchability:
Likely searchable text within the PDF, allowing for quick access to specific topics.
Printability:
High quality, printable on demand (individual pages, chapters, or entire manual).
Binding:
N/A (Digital download, user prints and binds as desired)
Paper Type:
N/A (Digital download, user selects paper type if printing)
Engine Family:
M114, M115 (petrol); OM601, OM615, OM616, OM617 (diesel)
Petrol Engines:
2.0L Inline-4 (M115), 2.3L Inline-4 (M115), 2.5L Inline-6 (M114), 2.8L Inline-6 (M114)
Diesel Engines:
2.0L Inline-4 Diesel (OM615), 2.2L Inline-4 Diesel (OM615), 2.4L Inline-4 Diesel (OM616), 3.0L Inline-5 Diesel (OM617)
Horsepower Range:
Approximately 70 hp (diesel) to 140 hp (petrol), depending on specific engine and market.
Torque Range:
Varies significantly by engine, but generally adequate for the era.
Carburetion:
Zenith or Solex carburetors on most petrol engines.
Injection:
Bosch mechanical fuel injection on some later or performance-oriented models.
Diesel Injection:
Bosch inline injection pumps for diesel engines.
Era Appropriateness:
Designed to meet safety standards of the 1960s and 1970s. Lacked modern safety features like airbags or ABS.
Braking System:
Front disc brakes, rear drum brakes. Power assisted on most models.
Body Construction:
Integral body construction with crumple zones (advanced for its time).
Seat Belts:
Lap and shoulder belts (front), lap belts (rear), often optional or not fitted on very early models.
Oil Change:
Typically every 3,000-5,000 miles (5,000-8,000 km) or annually, depending on oil quality and driving conditions.
Tune Up:
Spark plug replacement, ignition timing adjustment, carburetor adjustment, filter replacement as per schedule (e.g., every 15,000-20,000 miles).
Engine Oil:
API SG or SF equivalent, viscosity typically SAE 20W-50 or 10W-40 depending on climate. Manual specifies exact grades.
Coolant:
Ethylene glycol-based antifreeze mixed with distilled water (50/50 ratio). Mercedes-Benz specifies proprietary coolants.
Brake Fluid:
DOT 3 or DOT 4 (low viscosity) glycol-based brake fluid.
Automatic Transmission Fluid:
Dexron II or equivalent automatic transmission fluid.
Manual Transmission Fluid:
GL-4 gear oil, typically SAE 80W-90 or SAE 75W-90.
Rust And Corrosion:
Common issue in areas with salt exposure, particularly wheel arches, rocker panels, and underbody.
Carburetor Issues:
Zenith/Solex carburetors can be finicky and require regular adjustment or rebuilding for smooth operation.
Vacuum Lines:
Degradation of rubber vacuum lines can lead to performance issues and rough idling.
Bushing Wear:
Rubber suspension and steering bushings can wear out over time, leading to noise and sloppy handling.
Thermo-Time Switch:
Failure of the thermo-time switch on fuel-injected models can cause starting problems when cold.
Legacy:
Part of Mercedes-Benz's push for wider market appeal and durability, bridging the gap between entry-level and luxury models.
Introduction:
Introduced in 1968, succeeding the W108/W109 S-Class predecessor and replacing the smaller W110 'Fintail'.
Key Innovations:
Introduced McPherson struts front suspension, and refined body-on-chassis (for estate) and unibody construction for improved safety and ride.
Production Period:
1968 – 1976
Manufacturing Locations:
Mainly Germany, with production also in other countries under license or CKD assembly.
