Engine Mechanical:
Complete overhaul, disassembly, assembly, tuning, troubleshooting for M30B35 engine.
Fuel System:
Bosch Motronic fuel injection, fuel pump, injectors, lines, pressure regulator.
Ignition System:
Ignition coil, distributor (if applicable), spark plugs, wiring, timing.
Cooling System:
Radiator, water pump, thermostat, hoses, fan, coolant specifications.
Exhaust System:
Exhaust manifold, catalytic converter, mufflers, pipes, gaskets.
Transmission Manual:
Manual gearbox (e.g., Getrag 260), clutch, shifter linkage, fluid specifications.
Transmission Automatic:
Automatic gearbox (e.g., ZF 4HP22), torque converter, hydraulic system, fluid specifications.
Drivetrain:
Driveshaft, universal joints, differential, axle shafts, wheel bearings.
Suspension Front:
McPherson struts, control arms, ball joints, bushings, springs, shock absorbers.
Suspension Rear:
Multi-link independent suspension, trailing arms, shock absorbers, springs, bushings.
Steering System:
Power steering pump, steering rack, tie rods, steering column, fluid specifications.
Braking System:
Front discs (ventilated), rear discs, brake calipers, master cylinder, ABS (if equipped), brake fluid.
Electrical System Charging:
Alternator, voltage regulator, battery, wiring.
Electrical System Starting:
Starter motor, ignition switch.
Lighting System:
Headlights, taillights, interior lights, bulb types, wiring diagrams.
Instrumentation:
Gauges, warning lights, odometer, trip computer (if applicable).
HVAC System:
Heater core, A/C compressor, climate control unit, refrigerant, blower motor.
Body And Chassis:
Body panel removal/installation, structural components, corrosion protection.
Interior Trim:
Seat removal, dashboard disassembly, door panel removal.
Wiring Diagrams:
Comprehensive electrical schematics for all systems.
Routine Maintenance:
Oil changes, filter replacements, fluid checks and top-offs, spark plug replacement.
Troubleshooting:
Diagnostic procedures for common and uncommon problems across all systems.
Component Removal Installation:
Detailed steps for removing and reinstalling all major and minor components.
Engine Rebuild:
Full engine overhaul procedures, including piston rings, bearings, valve seals, timing chain.
Transmission Service:
Clutch replacement, automatic transmission fluid and filter changes, seal replacement.
Brake Service:
Pad and rotor replacement, caliper service, bleeding procedures, ABS diagnostics.
Suspension Repair:
Ball joint replacement, bushing replacement, shock absorber installation, alignment specifications.
Electrical Repairs:
Wiring harness repair, component testing, fuse and relay identification.
HVAC Repair:
Leak detection, refrigerant charging, component replacement.
Depth Level:
Comprehensive: Covers everything from basic maintenance to complete engine and transmission rebuilds, including advanced diagnostics and detailed troubleshooting.
Oil Change Interval:
Typically every 7,500 - 10,000 miles or 12 months. The manual will provide specific recommendations based on driving conditions and oil type.
Transmission Fluid Change Manual:
Recommended every 60,000 miles, or as per manual's directive.
Transmission Fluid Change Automatic:
Recommended every 40,000-60,000 miles, including filter replacement. Crucial for longevity.
Coolant Flush:
Typically every 2-3 years or 30,000-50,000 miles.
Engine Oil Type:
Synthetic or high-quality conventional 10W-40 or 20W-50, depending on climate and BMW's specific recommendation at the time. Manual is the definitive source.
Brake Fluid Type:
DOT 3 or DOT 4. Manual will specify exact type and replacement interval.
Power Steering Fluid Type:
ATF Dexron II/III or CHF 11S (check specific model). Manual is essential for confirmation.
Cooling System:
Plastic coolant expansion tank can become brittle and crack. Water pump failures and thermostat issues are also common.
Engine M30:
Oil leaks from valve cover gasket, oil pan gasket, and front crank seal. Timing chain guides can wear over time, requiring replacement.
Suspension:
Worn control arm bushings, ball joints, and rear subframe bushings can lead to sloppy handling and noise. Shock absorbers may leak.
Electrical:
Headlight switch issues, seized blower motor resistors, and corroded grounds are common in older vehicles.
Door Seals:
Door seals can degrade, leading to water leaks into the cabin.
Oil Filter Example:
e.g., Mann Filter HU 718/1, Mahle OC 27/1. Manual will list BMW OE numbers and recommended alternatives.