1997 BMW 528i Car engin

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I Engine Removal and Installation I
4 Where applicable, remove schraedervalve cap (arrow) from
air connection on fuel rail. Using a tire chuck, blow fuel back
through feed line using a brief burst of compressed air
(rnax-
imum of 3 bar or 43.5 psi).
WARNING -
Fuel in fuel line is under pressure (approx. 3 - 5 bar or 45 -
75psi) andmay be expelled underpressure. Do not smoke
or work near heaters or other fire hazards. Keep a fire ex-
tinguisher handy Before disconnecting fuel hoses, wrap
a
cloth around fuel hoses to absorb any leaking fuel. Catch
and dispose of escaped fuel. Plug all open fuel lines.
Alwavs unscrew the Fuel tank cao to release
oressure
I in the tank before working on the tank or lines. I
- Raise car and support in a safe manner.
WARNING-
Male sure the car is stable and we/ supported at all times.
Use a professional automotive lift orjackstands designed for
the purpose. A floor jack is not adequate support
- Working underneath car, remove protective engine splash
guard.
4 Disconnect fuel lines by sliding locking collar in (arrows) and
pulling line apart.

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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.

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.-
-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.

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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.

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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.

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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.
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110-19
Engine Removal and Installation
M62 engine, remove ASC throttle body.
Disconnect electrical harness from throttle position sensor.
- Disconnect ASC actuator cable (arrow).
. Remove mounting fasteners and remove throttle body.
On front of left side cylinder head, disconnect electrical har-
ness connector
(A), and remove and plug fuel tank vent valve
vacuum line
(0).
Raise car and support in a safe manner.
CAUTION-
Male sure the car is stable and well supported at aN times.
Use a professional automotive
lifi orjackstands designed for
I the ouroose. A floor jack is not adequate support.
Working beneath car:
- Remove engine splash shield.
Remove right and left heat shield from front suspension
subframe.
Working underneath engine compartment, disconnect
ground cable on right side engine mount
(arrow).

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-- Engine Removal and installation' -
Remove polyribbed A/C compressor belt:
Mark direction of belt travel if belts are to be reused.
Loosen bolts
(A).
Turn adjusting lug (B) clocltwise to release belt tension.
Working beneath car, remove power steering pump and air
conditioner compressor. Suspend from body using stiff wire.
Remove exhaust manifolds. See
180 Exhaust System.
< lnstall engine lifting device (BMW 11 0 000 or equivalent) to
front and rear engine supports and raise engine until it's
weight is supported. Detach engine mounts.
a Watch carefully for hoses and electrical wires that might
snag.
- installation is reverse of removal:
Replace all gaskets, O-rings and seals.
V-8 engine mounts have two sets of mounting holes. E39
cars use front most mounting holes.
* On cars with automatic transmission, use new O-rings at
ATF cooler lines.
Use new alignment sleeves when installing transmission.
Be sure engine drive belts properly engage pulley grooves.
When installing belt, preload tensioner to stop (toward
belt), then tighten tensioner clamping nut.
lnstall front exhaust pipes using new gasltets and copper
paste and new mounting hardware. See
180 Exhaust
System.
Change engine oil and filter. Check all other fluid levels as
described in
020 Maintenance.
Refill and bleed cooling system as described in
170 Radi-
ator and Cooling System.
CAUTION-
Do not interchange knoclc sensor harness connectors. Seri-
ous engine damage may result