🏷️ Basic Information Identification Make: BMW Model: 525i Model Variant: 525 Year: 1985 Codes Chassis Code: E28 👋 Introduction Market Position Segment: Executive Sedan / Luxury Sports Sedan Target Audience: Discerning drivers seeking performance, comfort, and build quality Competitive Analysis Key Competitors 1985: Mercedes-Benz W124 E-Class, Audi 100/200, Jaguar XJ, Volvo 700 Series Key Features Design Philosophy: Balance of sportiness and luxury, driver-focused ergonomics Driving Dynamics: Renowned BMW handling and ride comfort, rear-wheel drive Powertrain Reputation: Smooth, powerful inline-six engines 📋 Manual Details Coverage Areas Primary Coverage: Complete Service and Repair Diagnostic Coverage: Extensive fault finding and diagnostic procedures Maintenance Coverage: Scheduled maintenance, inspections, and fluid changes Repair Coverage: Detailed step-by-step repair procedures for all major components Electrical Coverage: Wiring diagrams, electrical component testing, and troubleshooting Bodywork Coverage: Body panel removal/installation, trim, and basic repair Page Count Estimated Pages: Approximately 800-1200 (typical for factory manuals of this era) Manual Type Type: Factory Service Manual / Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: M30B32 engine: tuning, overhaul, fuel injection (Bosch L-Jetronic), ignition, cooling system Transmission: Getrag 260 5-speed manual, ZF 4HP22 automatic: removal, installation, overhaul, fluid service Drivetrain: Rear axle, driveshaft, CV joints, differential Suspension: Front struts, rear semi-trailing arms, bushings, shocks, springs, alignment specifications Brakes: Front vented discs, rear solid discs, ABS (optional): hydraulics, calipers, master cylinder, bleeding Steering: Power steering system, steering rack, tie rods, adjustments Electrical: Alternator, starter, battery, lighting, wipers, horn, instrument cluster, power windows, central locking Climate Control: HVAC system: blower motor, evaporator, heater core, A/C system servicing (R-12) Fuel System: Fuel pump, injectors, fuel pressure regulator, fuel tank, fuel filter Exhaust System: Exhaust manifolds, catalytic converter (if equipped), mufflers, pipe routing Procedures Included Basic Maintenance: Oil changes, filter replacements, spark plug replacement, belt tensioning, coolant flush Engine Repair: Head gasket replacement, piston ring replacement, valve adjustment, timing chain inspection Transmission Repair: Clutch replacement (manual), torque converter replacement (automatic), seal replacement Brake Service: Brake pad/shoe replacement, rotor resurfacing/replacement, brake fluid flush and bleeding Suspension Repair: Shock absorber replacement, bushing replacement, ball joint replacement Electrical Troubleshooting: Wiring diagram interpretation, component testing, diagnosing electrical faults Fuel Injection Diagnostics: Testing injectors, fuel pressure, airflow meter, ECU troubleshooting (basic) Body Panel Removal: Fenders, hood, doors, bumpers, trim pieces Lubrication Points: Detailed diagrams for lubrication points Technical Depth Depth: Comprehensive: Covers basic maintenance to complete engine and transmission rebuilds Diagnostic Approach: Systematic troubleshooting trees and diagnostic flowcharts Torque Specifications: Detailed torque values for all critical fasteners Clearances: Engine internal clearances (e.g., bearing, piston ring gap), valve clearances Wiring Diagrams: Full vehicle wiring diagrams, color-coded where possible 📊 Manual Specifications File Format Format: PDF Searchability: Text-searchable (OCR processed) Print Quality Quality: High-resolution, suitable for professional printing Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Code: M30B32 (often referred to as 3.2L in this context, though actual displacement is slightly less) Engine Type: 3.2L (3210 cc) SOHC Inline-6 Cylinder Bore X Stroke: 89.0 mm x 86.0 mm Compression Ratio: 8.8:1 or 9.1:1 (depending on specific variant and market) Performance Horsepower Net Hp: Approximately 171-177 hp @ 5500 rpm (market dependent) Torque Net Lb-Ft: Approximately 195-200 lb-ft @ 3500 rpm (market dependent) Fuel System Fuel Delivery: Bosch L-Jetronic Fuel Injection Fuel Type: Unleaded Premium Gasoline (91+ Octane) Ignition System Type: Electronic Ignition (BOSCH Motronic) 🔧 Transmission Standard Type: Getrag 260 5-Speed Manual Transmission Optional Type: ZF 4HP22 4-Speed Automatic Transmission Features Clutch Type: Hydraulically operated single dry plate clutch Automatic Features: Lock-up torque converter, selectable modes (e.g., Economy/Sport) 📐 Dimensions Exterior Length: 4755 mm (187.2 in) Width: 1765 mm (69.5 in) Height: 1415 mm (55.7 in) Wheelbase: 2795 mm (110.0 in) Front Track: 1470 mm (57.9 in) Rear Track: 1482 mm (58.3 in) Weights Curb Weight: Approximately 1500-1580 kg (3307-3483 lbs) Gross Vehicle Weight Rating: Approximately 1950 kg (4299 lbs) 🛡️ Safety Features Ratings ABS: Optional Bosch ABS (Anti-lock Braking System) available on later models Active Features Braking System: Four-wheel disc brakes (front vented) Steering System: Recirculating ball with power assist Passive Features Seat Belts: Three-point inertia-reel seat belts front and rear Body Construction: Unitized steel body with integrated safety cage 💡 Technology Features Infotainment Audio System: Original BMW Bavaria C or similar cassette-based radio with optional amplifier Display: Analog gauges, basic OBC (On-Board Computer) on some models Driver Assistance ABS: Optional Bosch ABS Connectivity Connectivity Features: None (analog systems, pre-dating modern connectivity) 🔧 Maintenance Service Intervals Oil Change Interval: Every 7,500-10,000 miles or 12 months (synthetic oil recommended) Spark Plug Replacement: Approximately every 30,000 miles (depending on plug type) Coolant Flush: Every 2 years or 30,000 miles Transmission Fluid Change: Manual: Inspect, fluid change every 50,000-60,000 miles. Automatic: Inspect, fluid/filter change every 30,000-40,000 miles (under severe use). Fluid Specifications Engine Oil: SAE 15W-40...