Honda Bmw 5 Service Manual
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Engine Removal and lnstallationl M52 TU, M54 engine: Disconnect electrical harness connec- tor at fuel tank venting valve (A). Disconnect vent hose at fit- ting (arrow). - Working under intake manifold, disconnect the following: Engine oil dipstick tube support. Oil separator return line from dipsticlc tube. Intake air temperature sensorelectrical harness connector (underside of intake manifold near throttle body). M52 TU, M54 engine: Resonance valve electrical harness connector. M52 engine: Fuel tank vent line and harness. < Working underneath car, remove lower intalte manifold sup- port mounting bolts (arrows). 4 M52 TU. M54 engine: Remove fuel rail mounting bolts (arrows): Carefully pry fuel rail off manifold. Separate fuel line support bracket at rear of intake manifold. NOTE- * M52 TU engine shown. M54 engine is similar. M52 engine: Fuel rail is removed with intalte manifold.
.- -6val and Installation - < Remove intake manifold mounting hardware (arrows). NOTE- M52 TU engine shown. M52 and M54 engines are similar. Liit up manifold just enough to remove positive cables from starter motor terminal 50 (arrow). - Remove intake manifold from cylinder head while carefully checking for electrical connections, tie wraps, and hoses. CAUTION- Stuff clean rags into open intake ports to prevent any parts from falling into the engine intake. 4 Remove fastener (A) and harness connector (B) from alternator.
Engine Removal and installatid 4 Remove cylinder head top cover: Remove plastic trim caps (arrows). Remove cover retaining fasteners and lifl off cover. - Remove alternator cooling tube. 4 Drain engine coolant and remove coolant hoses: * Remove expansion tank cap on coolant reservoir. Place a 3 gallon pail beneath engine to capture coolant, * Remove coolant drain plug located on exhaust side of cylinder 2 of engine block (arrow). NOTE- Drain plug for M52 TU and M54 engine shown. Plug for M52 located between cylinders 4 and 5. Drain radiator by removing plastic drain plug (arrow) from bottom of radiator. WARNING- Use extreme caution when draining and disposing of engine coolant Coolant is poisonous andlethal to humans andpets. Pets are attracted to coolant because of its sweet smell and taste. Seek medical attention immediately if coolant is ingest- ed. NOTE- Catch and dispose of drained coolant according to local, state, and federal laws.
110-12 Engine Removal and Installation 4 Remove hoses from thermostat housing by releasing locks (arrows). If applicable, detach electrical harness connector for thermostat housing. NOTE- Two different types of hose fasteners are used on the E39 car; lock clamp type as shown above or standard band clamps. - On vehicles equipped with mechanical cooling fan: Remove belt-driven cooling fan and radiator as described in 170 Ra- diator and Cooling System. CAUTION- 32 mm radiator fan mounting nut has left hand threads. 4 Disconnect coolant hose (arrow) at rear left side of engine above starter. 4 Disconnect coolant hose (arrow) at front left side of engine mount. - Unbolt power steering fluid reservoir and pull aside without detaching hoses. Secure to fender with cord or stiff wire.
Engine Removal and Installation 4 Working at E-box at right rear of engine compartment: Disconnect engine electrical harness connectors (arrows). Lift off harness looms and lay over engine. - Remove polyribbed drive belts. Mark direction of rotation if belts will be reused. See 020 Maintenance. - Remove exhaust system and transmission from car. See 180 Exhaust System, 230 Manual Transmission or 240 Auto- matic Transmission. NOJE- Detach automatic transmission cooler lines from radiator, re- move brackets holding lines to side of engine, andstore lines in a clean environment. - Remove power steering pump: If necessary, remove steering pump pulley. Remove front and rear pump mounting bolts. Suspend pump from body using stiff wire. 4 Remove A/C compressor mounting bolts (arrows) and AIC compressor from its mounting bracketwithoutdisconnecting, distorting, or deforming any refrigerant lines. Suspend from body using stiff wire. 4 If applicable, remove secondary air pump: Remove hose at one-way valve (A). Remove bolts at support bracket on strut tower (arrows). - Disconnect electrical harness from bottom of secondary air pump. Remove bracket from strut tower.
110-14 I Engine Removal and Installation 4 M52 TU, M54 engine: Separate oxygen sensor electrical har- ness connectors (arrows) and mounting clip (A) on right side of engine. CA UTIOW Be sure to mark oxygen sensor connectors so that they can be assembled correctly Do not interchange connectors. 4 Remove chassis ground strap (arrow) at right engine rnount- ing pedestal. 4 Install an engine lifting device (BMW 11 0 000 or equivalent) to the front and rear engine supports and raise engine until its weight is supported. Detach left and right engine mounts. - Carefully raise engine out of car, checking for any wiring, fuel lines, or mechanical parts that might become snagged as en- gine is removed. - . .. - .- - -
110-15 Engine Removal and lnstallation - Installation is reverse of removal, noting the following: Replace all gaskets. O-rings and seals. Use new fuel injector seals Check that engine drive belts properly engage pulley grooves. Inspect O-ring seal between mass air flow sensor and air filter housing. To facilitate reassembly, coat seal with acid- free grease. Change engine oil and filter and check all other fluid levels. See 020 Maintenance. Refill and bleed cooling system. See 170 Radiator and Cooling System. CAUTION-- When reattaching throttle assembly harness connectoc con- nector is fuNy tightened when arrows on connector and plug line up. Tightening torques Coolant drain plug to cylinder block 25 Nm (18 ft-lb) Engine mount to subframe (M10) 45 Nm (33 ft-ib) Exhaust manifold to cylinder head M6 10 Nm (89 in-lb) M7 or ME 20 Nm (15 ft-lb) Intake manifold to cylinder head M7 15 Nm (I 1 ft-lb) ME 22 Nm (16 ft-lb) Radiator cooling fan to coolant pump 40 Nm (30 ft-lb) Radiator drain screw to radiator 2.5 Nm (22 in-lb)
110-16 Engine Removal and Installation ENGINE, REMOVAL AND INSTALLATION (V-8 MODELS) NOTE- Engine removal procedures are similar for all V-8 models. When differences exist, they are noted at the beginning of each step. Engine are referred to by engine code. If neces- sary, See 100 Engine-General for engine code andappli- cation information. Be sure to cover all painted surfaces before beginning the removal procedure. As an aid to installation, label all com- ponents, wires and hoses before removing them. Do not reuse gaskets, O-rings or seals during reassembly WARNING - Due to risk ofpersonal injury, be sure the engine is cold be- fore beginning the removal procedure. - Disconnect negative (-) cable from battery. Prior to disconnecting the battery, read the battery discon- nection cautions given in 001 General Cautions and Warnings. - Remove engine hood or place hood in service position. See 410 Fenders, Engine Hood. Remove intake manifold cover, version 1: Remove plastic trim caps (arrows). Remove cover mounting fasteners and lift off cover. Remove intake manifold cover, version 2: Press down on locking pins (arrows) to release locks Lifl cover straight up to remove.
- .. -. -. Engine Removal and in=/ 4 Remove left interior ventilation duct: Release duct locking tabs (A). Early models: release loclc ing strap. * Rotate duct inward (arrow) to detach. Release spring loclc (El) to unlock ventilation housing. Disconnect electrical harness connector from hood switch (C). Release locking clip and remove ventilation filter cover (D). Slide air housing away from inner fender to remove. Removal of right side ventilation duct is similar. 4 Remove rear engine compartment bulkhead panel: Remove rubber sealing strip. * Remove 3 mounting clips (A). Remove harness supporting clip (El). Unlock panel retainers (arrows). Lifl out panel. < Separate engine wiring harness (arrow) from electrical box at right side of engine compartment: Remove E-box cover. Disconnect electrical harness connectors leading from en- gine wiring harness (arrow). Connectors are labelled (A, El, C. D, E) for locating purposes. Lay engine harness on top of engine. - Drain engine coolant from engine block and radiator. See 170 Radiator and Cooling System. Remove drain plugs from right and left side of engine bloclc (between cylinders 213 and 617). Afler coolant has drained, reinstall drain plugs using new sealing washers. Drain radiator and reinstall drain plug. Tightening torques Coolant drain plug to cylinder block (M14) 25 Nm (18 ft-ib) Radiator drain screw to radiator 2.5 Nm (22 in-lb)
I Engine Removal and Installation WARNING - Use extreme caution when draining and disposing of engine coolant. Coolant is poisonous andlethal to humans andpets. Pets are attracted to coolant because of its sweet smell and taste. Seek medical attention immediately if coolant is ingest- --- Working at rear of intake manifold: Disconnect brake booster vacuum line (A). Disconnect fuel tank vent line (6). Disconnect hoses (C and D) at coolant manifold - Remove transmission harness support (E). - Remove oil filter housing assembly from fender: - Remove oil filter housing mounting fasteners. Use stiff wire to secure oil filter housing to engine. NOTE- Do not disconnect oil lines from filter housing. 4 Disconnect supply and return fuel lines (where applicable) at or near fuel rail. Plug open fuel lines. NOTE- BMW uses three styles of fuel line connections; a slngle use clamp, a locking fitting that uses special tool 16 7 050 to re- lease, and a quiclc release sleeve (arrows) that disconnects the line when depressed. WARNING- Fuel In fuel line is under pressure (approx. 3 - 5 bar or45 - 75 psi) and may be expelled. Do not smoke or worlc near heaters or other fire hazards. Keep a fire extinguisher handy. Before disconnecting fuel hoses, wrap a cloth around fuel hoses to absorb any lealcing fuel. Catch and dispose of escaped fuel. Plug all open fuel lines. . Always unscrew the fuel tank cap to release pressure in the tank before worlcing on the tank or lines. < Remove air filter housing and mass air flow sensor: Disconnect mass air flow sensor (A) and intalte air temper- ature sensor (6) electrical harness connectors. . Remove air filter housing mounting fastener (arrow). Loosen intake hose clamp (C). M62 engine: Remove hose at idle air stabilizer. Remove air filter housing with mass air flow sensor. Remove intalte hose from throttle body.