Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2009 BMW Z4 30i, StandardFACTORY OEM SERVICE PROCEDURE
Specifications Index
Z4 SPECIFICATIONS INDEX
| System | Specification/Procedure | |
|---|---|---|
| Air Conditioning | ||
| Service | TECHNICAL DATA | |
| Torque | TIGHTENING TORQUES | |
| Axle Nut/Hub Nut (Collar Nut) | 184 Ft. Lbs. (250 N.m) | |
| Battery | BATTERY | |
| Brakes | ||
| Bleeding Sequence | RR, LR, RF, LF | |
| Disc Brakes | TECHNICAL DATA | |
| Torque | TIGHTENING TORQUES | |
| Charging | ||
| Generator | ALTERNATOR (N52) or ALTERNATOR (N54) | |
| Torque | ALTERNATOR (N52) or ALTERNATOR (N54) | |
| Drive Belts | ||
| Adjustment | V-RIBBED BELT WITH TENSION DEFLECTOR ELEMENT (N52) or V-RIBBED BELT WITH TENSIONER AND DEFLECTION ELEMENT (N54) | |
| Belt Routing | V-RIBBED BELT WITH TENSION DEFLECTOR ELEMENT (N52) or V-RIBBED BELT WITH TENSIONER AND DEFLECTION ELEMENT (N54) | |
| Engine Cooling | ||
| General Service Specifications | COOLING SYSTEM TEST (N52) or COOLING SYSTEM TEST (N54) | |
| Radiator Cap Pressure | RADIATOR AND MOUNTING (N52) or RADIATOR AND MOUNTING (N54) | |
| Thermostat R & I | THERMOSTAT AND CONNECTIONS (N52) or THERMOSTAT AND CONNECTIONS (N54) | |
| Water Pump R & I | WATER PUMP WITH DRIVE (N52) or WATER PUMP WITH DRIVE (N54) | |
| Engine Mechanical | ||
| Compression | ENGINE IN GENERAL (N52) or ENGINE IN GENERAL (N54) | |
| Oil pressure | Oil pressure at idle speed with engine at operating temperature: 22 psi (1.5 bar) min; regulated pressure: 58-87 psi (4-6 bar). | |
| Overhaul | TECHNICAL DATA (N52) or TECHNICAL DATA (N54) | |
| Torque | TIGHTENING TORQUES (N52) or TIGHTENING TORQUES (N54) | |
| Fluid Specifications | See FLUIDS under MAINTENANCE tab. From within Manager or Service Writer, click the "30/60/90 Interval" or "Maint." button. | |
| Flywheel/Flex Plate Torque | FLYWHEEL (N52) or FLYWHEEL (N54) | |
| Fuel System | ||
| Fuel Filter Location | In Tank, Integral With Pressure Regulator | |
| Fuel Filter R & I | REMOVING AND INSTALLING/REPLACING FUEL FILTER WITH PRESSURE REGULATOR | |
| Pressure Release Procedure | NA | |
| Pressure Specification | 72 psi (5 bar) | |
| Fuel Pressure Test Procedure | CHECK FUEL DELIVERY PRESSURE (N52) or CHECKING FUEL DELIVERY PRESSURE (N54) | |
| Ignition | ||
| Firing Order & Cylinder Identification | FIRING ORDER & CYLINDER IDENTIFICATION | |
| Ignition Wires (Routing) | Coil on plug | |
| Spark Plug | ||
| Type | Bosch ZGR6STE2 | |
| Gap | Not Adjustable | |
| Torque | 23 Ft. Lbs. (31 N.m) | |
| Starting | ||
| Starter | STARTER (N52) or STARTER (N54) | |
| Torque | STARTER (N52) or STARTER (N54) | |
| Wheel Alignment | ||
| Adjustment Specifications | TECHNICAL DATA | |
| Torque | TIGHTENING TORQUES | |
| Wheel & Tire | ||
| Wheel Lug Nut Torque | 89 Ft. Lbs. (120 N.m) | |
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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