Auto Repair Manual Free Download and ReviewsFree download ebook pdf files automotive manual

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Removing intake air housing with mass air flow sensor, refer to Powertrain Management. Remove bulkhead heater (air collector). This operation is described in section on removing complete wiper console, refer to Wiper and Washer Systems. Place cable channel to one side. Remove adapter from brake force booster. Remove cover from injection valves. Unclip plug connections from oxygen sensors. Unfasten plug connection from VANOS solenoid valve. Lift connector strip off injection valves and place to one side

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Removing and Installing Dashboard Trim Panel Safety Instructions For Working on Cars With Airbag Systems WARNING! If work is carried out in area of airbag Systems, e.g. on: – Door trim panels – Interior trims – Instrument panel etc. the ignition must be turned off in each case. – The ignition must always be off. – The ignition key must be removed from the ignition lock. This eliminates the risk of injury. – Disconnect negative battery lead. – Remove both trims for front roof pillar. See: Trim Panel/Service and Repair – Remove complete instrument cluster. See: Instrument Panel, Gauges and Warning Indicators/Instrument Cluster / Carrier/Service and Repair – Remove passenger airbag. See: Restraint Systems/Air Bag Systems/Air Bag/Service and Repair/Passenger’s Side – Unfasten locking unit (1) and remove connector (2). Unfasten screws and remove brackets (3) and (4) from passenger airbag.

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Refer to Instructions For Disconnecting And Connecting Battery. Disconnect negative battery lead. E46 Only Disconnect battery positive lead from battery connection point. Remove microfilter. Open cable duct on lower section of microfilter housing (2) and feed out cable(s). Release screws (1) and remove lower section of microfilter housing (2). Remove cover from fuel injectors. Caution: Do not mix up oxygen monitor sensors for cylinders 1 to 3 and 4 to 6 at plug connection to wiring harness. Mark plug connections. Unclip plug connections (1) from holder. Detach retainer (2) from battery positive lead. E46 Only Pull off complete rubber strip (1). Disconnect plug connection (2) on solenoid valve.

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Oil Separator – Cold Climate Conditions MODEL NEW E39 5 Series, E46 3 Series, E53 X5, E60 5 Series, E83 X3, E85 Z4 with M54 Engine SITUATION Certain areas of the US experience extremely cold climate conditions during the winter months. A small number of vehicles in the above series listed have experienced problems ranging from leaking or broken valve covers to complete engine failure. CAUSE Moisture accumulating in the engine oil separator, hose to oil dipstick guide tube or the orifice in the dipstick guide tube can freeze. When this occurs, depending on the position of the internal valve, this may either cause high crankcase pressures (stuck closed) resulting in valve cover leakage/breakage or cause an oil hydro-lock condition (stuck open) which could result in engine damage. NEW CORRECTION E39 In case of a customer complaint, replace the crankcase vent valve, crankcase vent hoses and remove and clean the oil dipstick guide tube orifice. E46, E53, E60, E83 and E85 In case of a customer complaint, replace the crankcase vent valve, crankcase vent hoses and dipstick guide tube

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Removing intake filter housing with mass air flow sensor, refer to Powertrain Management Removing cylinder head cover, refer to Valve Cover Removing all spark plugs. Removing intake air manifold, refer to Intake Manifold Removing VANOS adjustment unit, refer to Camshaft, Lifters and Pushrods, Camshaft, Engine. Unfastening sensor for cylinder recognition, refer to Powertrain Management, Cylinder Identification Sensor, Service and Repair. Drain off coolant and dispose of correctly. Installation: Tightening torque, refer to Engine Specifications Bleeding cooling system and checking for water leaks, refer to Cooling System Remove exhaust pipe from exhaust manifold. Release water hose from branch flange. Unfasten heating intake and heating return hoses. Removal of cylinder head is described separately from installation. Assembly sequence for removal and installation is different. Unfasten screws and remove washer from exhaust camshaft. Unfasten nuts from thrust washer (intake camshaft).