Engine Mechanical:
Detailed overhaul procedures for M30B30 engine, including cylinder head, pistons, crankshaft, camshaft, timing, lubrication, and cooling systems. Torque specifications and clearances.
Engine Electrical:
Ignition system, fuel injection (Bosch Motronic M3.1), starter, alternator, and battery. Wiring diagrams for all electrical components.
Fuel System:
Fuel pump, fuel filter, fuel injectors, fuel pressure regulator, and EVAP system diagnostics and repair.
Cooling System:
Radiator, water pump, thermostat, hoses, and cooling fan operation and replacement procedures.
Exhaust System:
Catalytic converter, muffler, exhaust manifold, and O2 sensor replacement and diagnostics.
Transmission Manual:
Clutch system, gear linkage, internal transmission components, and fluid changes for Getrag 260/5.
Transmission Automatic:
Torque converter, hydraulic system, valve body, internal transmission components, and fluid changes for ZF 4HP-22.
Suspension Front:
MacPherson strut, control arms, ball joints, bushings, and wheel bearing replacement and alignment procedures.
Suspension Rear:
Independent trailing arm, shock absorbers, springs, bushings, and wheel bearing replacement and alignment procedures.
Steering System:
Power steering pump, steering rack, tie rods, and steering column components and service.
Brake System:
Front vented discs, rear solid discs, hydraulic system, ABS (Anti-lock Braking System), brake pads, rotors, calipers, and fluid flush procedures.
Electrical System Lighting:
Headlights, taillights, interior lighting, and bulb replacement.
Electrical System Gauges Instruments:
Dashboard gauges, warning lights, and instrument cluster diagnostics.
Climate Control:
HVAC system, blower motor, heater core, A/C compressor, refrigerant, and climate control panel diagnostics and repair.
Body Exterior:
Door mechanisms, window regulators, sunroof operation, bumpers, and trim panel removal and installation.
Body Interior:
Seat removal, dashboard disassembly, center console, and interior trim panel service.
Routine Maintenance:
Oil changes, filter replacements (oil, air, fuel), spark plug replacement, fluid checks and top-offs, tire rotation.
Troubleshooting Diagnostics:
System-specific diagnostic flowcharts, fault code interpretation (where applicable for Motronic system), symptom-based troubleshooting guides.
Engine Rebuild:
Complete engine disassembly, inspection, cleaning, and reassembly instructions with detailed specifications.
Transmission Overhaul:
Detailed procedures for rebuilding both manual and automatic transmissions.
Brake System Service:
Brake bleeding, caliper replacement, rotor resurfacing/replacement, and ABS component diagnostics.
Suspension Component Replacement:
Shock absorber, strut, control arm, bushing, and ball joint replacement.
Electrical Component Testing Replacement:
Testing and replacement of sensors, actuators, relays, fuses, and ECU components.
Climate Control Repair:
A/C system charging, leak detection, compressor replacement, and heater core service.
Body Panel Alignment Repair:
Guidance on body panel removal, installation, and adjustment for proper fitment.
Depth:
Comprehensive, covering all aspects from basic maintenance to major component overhaul and system diagnostics. Suitable for professional technicians and advanced DIY enthusiasts.
Diagrams Illustrations:
Includes detailed exploded views, wiring diagrams, and schematic illustrations to aid in repair and understanding.
Specifications Data:
Provides essential torque values, clearances, fluid capacities, resistance values, and other critical technical data.
Oil Change:
Recommended every 7,500-10,000 miles (12,000-16,000 km) or 12 months, whichever comes first, with high-quality synthetic oil.
Air Filter Replacement:
Inspect every 15,000 miles (24,000 km), replace as needed (typically 30,000 miles or 48,000 km).
Fuel Filter Replacement:
Recommended every 30,000 miles (48,000 km).
Spark Plug Replacement:
Typically every 60,000 miles (96,000 km) for platinum-tipped plugs (check specific plug type).
Coolant Flush:
Recommended every 2-3 years or 30,000-40,000 miles (48,000-64,000 km).
Engine Oil Type:
SAE 5W-30 or 5W-40 Synthetic Recommended (Refer to owner's manual for exact specifications).
Engine Oil Capacity:
6.7 US quarts (6.3 Liters) with filter change.
Coolant Type:
BMW Blue Antifreeze/Coolant (G48 ethylene glycol based) mixed 50/50 with distilled water.
Transmission Fluid Manual:
Dexron III or equivalent ATF (check manual for exact type, some may specify gear oil for earlier models).
Transmission Fluid Automatic:
Dexron III or equivalent ATF (BMW part # 83 22 0 026 882 or similar).
Brake Fluid Type:
DOT 4 brake fluid.
Power Steering Fluid Type:
ATF Dexron II or III (BMW part # 81 22 9 407 761 or similar).
Coolant Leaks:
Plastic coolant expansion tank, hoses, and water pump seals are common failure points.
Oil Leaks:
Valve cover gasket, oil pan gasket, and front crank seal are prone to leaks on the M30 engine.
Suspension Wear:
Control arm bushings, rear trailing arm bushings, and shock mounts are common wear items.
Electrical Gremlins:
Age-related issues with wiring harnesses, grounds, and sensor failures can occur. Headlight switch failure is also common.
Fuel Pump Reliability:
Fuel pumps and fuel pressure regulators can degrade over time.