This comprehensive BMW 5-series (E12) 1975 Service and Repair Manual provides detailed instructions and illustrations for maintaining, servicing, diagnosing and repairing every aspect of your vehicle. This is the same manual used by technicians at BMW dealerships, offering you the most accurate and up-to-date information available.

Within its pages, you'll find step-by-step instructions encompassing:

* **Maintenance:** Routine procedures like oil changes, filter replacements, and fluid checks.
* **Engine:** Thorough coverage of engine components including cylinders, pistons, valves, and camshafts, along with troubleshooting and repair guidance.
* **Control System:** Understanding and resolving issues related to fuel injection, ignition, and emissions.
* **Mechanical:** In-depth information on transmission, drive shafts, axles, suspension, and steering systems.
* **Fuel Service Specifications:** Precise details on fuel system components, operation, and maintenance.
* **Emission Control:** Comprehensive information on emission control systems, diagnosis, and repair.
* **Intake, Exhaust, and Cooling:** Detailed explanations of these essential systems, including troubleshooting and repair procedures.
* **Lubrication:** Guidance on lubrication systems, fluid types, and maintenance schedules.
* **Ignition, Starting, and Charging:** Detailed coverage of these systems, with troubleshooting and repair instructions.
* **Transmission and Clutch:** Complete breakdowns of both automatic and manual transmissions, along with troubleshooting and repair information.
* **Drive Shaft, Differential, and Axle:** Diagnosis and repair of these critical components.
* **Suspension:** In-depth information on suspension systems, including troubleshooting and repair procedures.
* **Tires and Wheels:** Comprehensive guidance on tire and wheel care, maintenance, and repair.
* **Brake System:** Detailed explanations of all brake system components, with troubleshooting and repair instructions.
* **Steering and Power Steering:** Troubleshooting and repair guidance for steering systems and power steering components.
* **Air Conditioning:** Detailed information on air conditioning systems, including troubleshooting and repair procedures.
* **Supplemental Restraint System:** Complete coverage of seat belts and airbags, including maintenance and repair.
* **Engine Immobilizer, Cruise Control, Wiper and Washer:** Diagnosis and repair for these features.
* **Door Locks, Meter Audio/Visual, Horn, Windshield/Glass Mirror, and Instrument Panel:** Comprehensive information on these systems.
* **Seat, Engine Hood/Door, Exterior and Interior:** Guidance on troubleshooting and repair for these vehicle areas.
* **Electrical Systems:** Explanations of electrical systems, including troubleshooting and repair for wiring, components, and sensors.
* **Multiplex/Can Communication:** Understanding and troubleshooting communication systems.

This manual is your ultimate resource for ensuring your BMW 5-series (E12) maintains optimal performance and reliability.

The BMW 5-Series (E12), launched in 1972, marked a significant departure from the brand's previous offerings, establishing a new benchmark for mid-size luxury sedans. This first generation of the 5-Series, internally designated as the E12, aimed to provide a more luxurious and sophisticated driving experience while retaining the exceptional handling and performance characteristics synonymous with BMW. The E12 was designed by Paul Bracq, who drew inspiration from the aerodynamically sleek BMW Turbo concept car. Its sharp lines, low roofline, and distinctive Hofmeister kink on the C-pillar created a timeless design that continues to resonate with enthusiasts today.

Underneath the elegant exterior, the E12 boasted a robust and refined chassis. The car featured a MacPherson strut front suspension and a semi-trailing arm rear suspension, offering a balance of comfort and precision handling. The E12 was available with a range of powerful and efficient gasoline engines, including the iconic M20 engine, which was later used in the legendary BMW M1. Notably, a fuel-injected 2.0-liter engine with a four-speed automatic transmission was introduced in 1977, marking a significant step towards improved fuel efficiency and driving ease. The E12’s success was solidified by its enduring reputation for reliability, durability, and handling prowess, solidifying the 5-Series’ position as a benchmark in the luxury car segment, paving the way for the enduring legacy of the BMW 5-Series.