1998 BMW 528i wheel front

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-
I Camshaft Timing Chain - --
Install BMW special tool 11 6 150 (VANOS setup bracket) to
front of cylinder head timing case. Tighten nuts
(arrows) by
hand, and then tighten down uniformly until special tool is in
full contact with cylinder head.
CAUTION-
Male sure all gasket material is removed from face of cylin-
der head. Clean
sealins face and keep free of oil.
Secure camshaft impulse sprockets and wheels:
Pretighten Torx screws
(A) on exhaust camshaft impulse
wheel to approx.
5 Nm (44 in-lb).
Pretighten mounting nuts
(B) on exhaust and intake
sprocket assemblies to approx.
5 Nm (44 in-lb).
- Torque down Torx screws (A) and nuts (8) to flnal
specifications.
Tightening torques Sprocket assembly
to camshaft
initial torque
5 Nm (44 in-lb)
Sprocket assembly to camshaft
M7 Torx screw (A) 20 Nm (15 fl-lb)
ivl6 mounting nut (B) 10 tdm (89 in-lb)
- Remove flywheel locking tool from transmission bellhousing
so that crankshaft is no longer locked.
- Remove camshaft locking tools from rear of cylinder head.
- Crank engine over twice by hand in direction of rotation until
cylinder
1 intake and exhaust camshaft lobes face each other - again.
- Secure crankshaft with BMW special tool 11 2 300.
4 Place BMW special tool 11 3 240 over camshaft ends and
measure clearance of tool to cylinder head surface.
NOJE-
If the exhaust side of the tool (A) is not flush with the head,
camshaft timing
Is incorrect. Repeat camshaft timing pro-
cedure.
* Due to flexible sprocket design and VANOS control unit tol-
erances and play, the
intake side of special tool 11 3 240
(6) may be up to 1 mm (0.04 in) above the sudace of the
cylinder head. This is normal. Otherwise, repeat camshaft
timing procedure.

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~~~ ~
Camshaft Timing Chain -
< Preload primary chain:
Tighten adjusting screw on BMW special tool
11 4 220 to
specified torque.
Tightening torque
Primary chain tensioner preload 0.7 Nm (6 in-lb)
< Preload exhaust camshaft spring plate by pressing on im-
pulse wheel while tightening mounting nuts
(arrows) finger
tight.
4 Install BMW special tool 11 6 150 (VANOS setup bracket) to
front of
cyl~nder head timing case.
Tighten tool mounting nuts
(arrows) by hand, then tighten
down uniformly until special tool is firmly contacting cylin-
der head.
CAUTION--
Male sure allgasl(et material is removed from face of cylin-
der head. Clean sealing face and keep free of oil.

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Cp-- Camshaft -- Timing Chain
Secure camshaft sprockets and impulse wheels:
Tighten mounting screws
(A) on exhaust camshaft impulse
wheel to approx.
5 Nm (44 in-lb).
Tighten mounting nuts
(6) on exhaust and intake sprocket
assemblies to approx.
5 Nm (44 in-lb).
Torque down mounting screws (A) and nuts
(6) to iinal
specifications.
Tightening torques Sprocket assembly
to camshaft
initial torque
5 Nrn (44 in-lb)
Sprocket assembly to camshaft
M7 Torx screw (A) 20 Nm (I5 it-lb)
M6 mounting nut (8) 10 Nm (89 in-lb)
- Remove flywheel locking tool from transmission bellhousing
so that crankshaft is no longer secured.
- Remove camshaft loclting tools from rear of camshafts.
4 Crank engine over by hand twice in direction of rotation until
cylinder
1 intake and exhaust camshaft lobes (arrows) face
each other.
- Secure crankshaft in TDC position with BMW special tool
11 2 300.
4 Place BMW special tool 11 3 240 over camshaft ends and
measure clearance of tool to cylinder head surface.
NOTE-
* If the exhaust side of the tool is not flush with the head (gap
A), retime the camshafts as described laler in this repair
group.
Due to flexible sprocket design and VANOS control unit tol-
erances and play, the
intake side of special tool 71 3 240
may be up to
I mm (0.04 in) above the suriace of the cyl-
inder head (gap
B). This is normal. Otherwise, retime the
camshafts as described in
VANOS timing, checking and
adjusting (M52 TU and 11154 engines).
- Remove VANOS setup bracket from front of cylinder head
- Install VANOS control unit. See VANOS control unit, in-
stalling
(01152 TU and M54 engines).
- Install intake camshaft oil baffle

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11 9-2
Lubrication System
This repair group covers lubrication system troubleshooting
as well as oil pan removal and oil pump replacement.
In 6-cylinder models, removal of the oil pan requires the re-
moval of the exhaust system and some front suspension
components. Those procedures are fully covered in:
180 Exhaust System
210 Clutch
230 Manual Transmission
0 240 Automatic Transmission
310 Front Suspension
320 Steering and Wheel Alignment
NOTE-
Oil change procedure and oil filter replacement are covered
in
020 Maintenance.
CAUTIOG
V8 engines: The oil pump fasteners (including the sprocket
retaining nut) are known to vibrate loose. This can result in oil
starvation and engine failure. Be sure to check oil bolts and
nut tightness whenever the
oilpump is accessible. If any fas-
teners are found to be loose, remove them and reinstall with
Loctite
Band torque to specifications.
Special tools
The engine needs to be properly supported while the front
suspension
subframe is lowered to access the oil pan.
A standard oil pressure gauge may be used for measuring oil
pressure.
Engine support bracket
(Tool No, BMW 00 0 20012011202~2041208)
4 6-cylinder crankshalt rear main seal tools
(Tool No. BMW 00 5 50011
1 1 260)

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Lubrication system/
4 Install engine lifting tool at front of engine and raise engine
approximately
5 mm (114 in).
< Remove pinch bolt (arrow) at steering column universal joint
near steering rack. See
320 Steering and Alignment.
- Remove power steering pump, leaving hydraulic lines con-
nected to pump. Suspend pump using strong wire. See
320
Steering and Wheel Alignment.
NOTE-
For better access to power steering assembly, unbolt fluid
reservoir and suspend with wire.
Loosen upper nuts (arrow) in right and lefl engine mounts,
< Remove right and left lower engine mount nuts (arrow)
- On cars with automatic transmission, remove ATF cooler line
brackets from engine oil pan.
- Disconnect electrical harness connector at oil level sensor on
oil pan.

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130-1 8
1 Fuel injection Secondary air injection
1. Secondary air pump (in right
front wheel housing)
2. Secondary air vacuum vent
valve solenoid (on intake mani-
fold)
3. Secondary air check valve
4. Intake manifold
5. Exhaust manifolds
6. Diverter valve (at exhaust mani-
fold)
Engine control module (ECM),
removing and installing
The ECM uses stored functions and processing programs to
process the input signals from the sensors. These input sig-
nals are used to calculate the control (output) signals to the
actuators
(e.g., ignition coils, injectors).
NOTE-
Consult an authorized BMW dealer before replacing the
ECM.
- Disconnect negative (-) battery cable. Wait approximately
one minute.
Prior to disconnecting the
battely, read the battery discon-
nection cautions in
001 General Warnings and Cautions.
Access engine control module (ECM):
Release interior ventilation filter cover latch
(A) and re-
move cover.
Release plastic locking tab
(B).
Rotate air duct inward (arrow) to unloclc from bulk head
and remove duct.
Release spring lock
(C) to remove lower filter housing.
Slide filter housing away from inner fender to remove.
- Remove electrical box (E-box) cover fasteners and remove
cover.
- If testing ECM or connected components, use breakout box
to allow tests to be made with connector attached to the
ECM. This prevents damage to small terminals in connector.

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230-1 8
Manual Transmission
- Unbolt clutch slave cylinder from side of transmission. Do not
disconnect fluid hose. Suspend slave cylinder from chassis
using stiff wire.
CA UTIOG
Unbolt clutch slave cylinder slowly to prevent air being
drawn into hydraulic system.
. Do not operate clutch pedal with slave cylinder re-
moved from transmission.
4 Put BMW special tool 11 7 370 or appropriate sized spacer
between engine oil sump and front axle support. Lower trans-
mission until engine is supported on spacer.
0 V-8 vehicle: Turn front wheels to prevent strain from being
placed on center tie rod.
All vehicles: Tilting the engine to lower the transmission
can lead to damage to various components due to lack
of clearance at rear of engine. Lower transmission
slowly
- Support front of engine with floor jack.
4 Disconnect shift rod from selector shaft coupling
- Disconnect shift console from top of transmission. See 250
Gearshift Linkage.
6-cylinder: Remove transrnisslon mounting Torx-head bolts
(arrows). Note length and locatlon of bolts.
Remove
transrnlssion by pulling backward untll transmls-
sion Input shaft clears clutch d~sc spl~nes, then pull down-
wards. Lower
transmlsslon jack to remove transrnlsslon. -
- - -
-

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-.- .
/ Driveshaft Driveshaft, removing
CAUTION-
. Be sure the wheels are off the ground before removing the
driveshak Set the parl(ing brake before removing the
driveshaft.
Once the driveshaft has been removed, the vehicle can
roll regardless of whether the transmission is in gear or
not.
The driveshaft is mounted to the transmission and final
drive
with self-locliing nuts. These nuts are designed to
be used only once and should be replaced during reas-
sembly.
Remove complete exhaust system. See
180 Exhaust
System.
- Remove exhaust heat shields.
- Support transmission with transmission jack.
< Loosen transmission mount nuts (arrows) on real
transmission support crossmember.
- Release wiring harness retainers from rear transmission
support crossmember.
< Remove mounting bolts (arrows) for rear transmission sup-
port crossmember. Slide crossmember rearward to remove.
- Matchmark front and rear driveshaft halves to corresponding
transmission output and final drive input flanges.
4 Remove nuts securing driveshaft mounting bolts at transmis-
sion output flange. Counterhold bolts (arrows) at transmis-
sion flex-disc. Discard old nuts.
- Hang driveshaft front section from body using stiff wire.