1998 BMW 540i locking

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I Camshaft Timing Chain I --
lnstall crankshaft holding tool (BMW special tool 11 8 190/11
8 200). Make sure cut outs in tool engages openings in
damper assembly. While counterholding crankshaft with
special tool, remove crankshaft center bolt (A).
CAUTION-
Do not use flywheel locking tool to hold crankshaft stationary
NOTE-
The crankshaft hub centerbolt is tightened to a torque of 410
Nm (300 ft-lb).
4 Install crankshaft damper puller (BMW special tool 11 8 210)
to 11 8 200. and (A) remove damper from crankshaft.
The crankshaft must not be allowed to rotate when the timing
chains are loosened or removed. The pistons can contact the
valves. Use appropriate crankshaft holding tool when loosen-
ing crankshaft hub center bolt.
Using a drift of less than
5 mm diameter, drive two locating
dowels in left and right sides of lower timing
cham cover to-
ward engine. Remove cover mounting bolts
(arrows) and
carefully lift cover off.
CA
UTION-
* Use care when removing the cover from the cylinder heao
gasket. If the cover is stuck, use a sharp
knife to separate
it from the headgasket.
If cylinder liead gasket Is damaged, remove cylinder
head and replace head gasket. See
113 Cylinder
head and valvetrain.
NOTE-
- The chain cover can be removed with the coolant pump in-
stalled.
Use care when removing the cover from the coolant pipe
at rear.
- Push primary chain tensioner guide rail aside and remove
chain.

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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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Camshaft Timing chain1
- Disconnect negative cable (-) from battery.
CAUTION-
Prior to disconnecting the battery, read the battery discon-
nection cautions given
in 001 General Cautions and
Warnings.
4 Removing top and side engine covers:
Press down on locking pins (arrows) to release locks. Lifl
intake manifold cover straight up to remove.
Pry out caps from side covers.
Remove fasteners
and covers.
NOTE-
Some early models use
pry out trim caps and fasteners to
hold the top cover in place.
Disconnect electrical harness connectors at ignition coils
(A).
Remove left and right side ignition coil mounting fasteners
and coils.
NOTE-
Make note of location of ground strap (arrow).
Remove spark plugs.
- Remove posltlve (+) terminal cable from left cylrnder head
cover.
- Unbolt left and right side cable ducts from fuel rail
Remove air filter housing and mass air flow sensor:
Disconnect mass air flow sensor and intake air tempera-
ture sensor electrical harnesses
(A and B).
Remove air filter housing mounting fastener (arrow)
Loosen intake hose clamp
(C).
Remove air filter housing with mass air sensor and intake
duct from throttle body assembly.

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1 17-72
Camshaft Timing Chain
4 Working at right side cylinder head loosen Intake camshaft
sprocket bolts
(arrows).
4 Secure left and right side camshafts in TDC position:
Use BMW special tool set
11 2 440.
- If necessary, turn camshaft so that special tools are
squarely seated on cylinder head.
Working at left cylinder head loosen
intake camshaft
sprocket bolts
(arrows).
CAUTION-
Counter hold camshaft with a 27mm open-end wrench while
loosening sprocket bolts. Grind wrench
if necessary to pre-
vent damage to head.
Remove BMW special tool
11 2 300 from crankshaft locking
tool bore.

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Camshaft Timing chain/
Camshaft timing, checking and adjusting
(M62 engine)
WARNING -
Allow engine to cool before beginning this procedure. 1
- Working inside luggage compartment, disconnect negative
battery cable.
CAUTIOI\C
Prior to disconnecting battery cable, read the battery discon-
nection cautions given
in 001 General Cautions and
Warninss.
4 Removing plastic top covers:
Press down on locking pins (arrows) to release locks. Lift
intake manifold cover straight up to remove.
Pry out caps from side covers.
Remove fasteners from beneath
caDs. Lift off covers.
4 Remove air filter housing and ducts:
Disconnect mass air flow sensor and intake air tempera-
ture sensor electrical harnesses
(A and B).
Remove air filter housing mounting fastener (arrow).
Release hose clamp at intake air duct on base of air filter
housing.
Loosen intake hose clamp
(C) and release hose from
mass air flow sensor.
Remove hose at idle air stabilizer.
Release hose clamp at throttle body and remove hose.
Remove upper air filter housing with mass air flow sensor.
- Unbolt left and right side cable ducts from fuel rail.

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-- . - .. . - Lubrication system]
- Remainder of installation is reverse of removal.
Replace self-locking nuts when reinstalling front suspen-
sion components.
Use new oil dipstick tube sealing O-ring.
After adding engine oil, start and run engine. Raise engine
speed to 2,500 rpm until oil pressure warning light goes out
(about 5 seconds).
NOTE-
BMW does not specify a front end alignment following this
procedure.
Tightening torques Front subfrarne to body rail
(M12, use new bolts)
8.8 grade
10.9 grade
12.9 grade 77 Nrn
(57 ft-lb)
105 Nrn (77 ft-lb)
110 Nrn (81 ft-lb)
Stabilizer bar link to stabilizer bar
65 Nrn (48 ft-lb)
Steering shaft universal joint clamping bolt
(use new bolt)
19 Nrn (14 it-lb)
Lower oil pan, removing and installing (V-8)
- The V-8 engine is equipped with a 2-piece oil pan. The fas-
teners in
V-8 engine oil pump assembly, including the
sprocket retaining nut, are known to loosen and fall off into
the oil pan. Be sure to install these fasteners with Loctite
O
or equivalent thread locking product and torque to specifica-
tions.
CAUTION-
It is recommended that the oil pump retaining bolts and oil
pump drive sprocket retaining nut tightening torque be
checkedany time the
oilpan is removed.
- Raise car and place securely on jack stands.
WARNING-
Make sure the car is stable and well supported at all times.
Use a professional automotive lift
orjack stands designed for
- Remove splash shield from under engine.
- Drain engine oil
- On cars with automatic transmission, remove ATF cooler line
brackets from oil pan.

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/Lubrication System
Oil pump, removing and installing
(&cylinder)
Oil pump assembly
(6-cylinder from 9/98)
CAUTIOI\C
Oil pump sproclcet nut has left-hand threads. Turn clockwise
to loosen.
4 Version 1, M52 oil pump assembly.
1. Oil pump pressure relief control valve
2. Oil pump suction tube
3. Suction tube support bracket
4. Oil pump assembly
5. Oil pump drive sprocltet
6. Oil pump drive chain
7. Oil pump drive sprocket nut (left hand threads)
4 Version 2, M52 TU oil pump assembly.
1. Oil pump pressure relief control valve assembly
2. Oil pump suction pick-up and seal
3. Oil pump
4. Oil pump drive sprocket
5. Oil pump shaft locking nut (left-hand thread)
6. Oil pump drive chain
Version
3, M54 oil pump assembly,
1. Drive chain
2.
MlO x 1 nut
Tighten to 25 Nm (18 ft-lb)
3. Oil pump sprocket
4. Inner pump rotor
5. Outer pump rotor
6. Oil pressure relief valve assembly
7. M8 bolt.
Tighten to 23 Nm
(17 it-lb)
8. Oil pump housing
9. Locating dowels
10. Pickup tube sealing O-ring
11. Pickup tube
12. M6 pickup tube mounting bolts
Tighten to
10 Nm (89 in-lb)

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Lubrication System
4 Replace O-ring seals (arrows) on engine oil pipes. Oil seals
lightly.
CAUTIO&
During reinstallation, do not damage O-rings on sharp edges
of engine
blocl<.
4 Replace sealing O-ring (A) in oil pump.
Turn threaded spacer on pump fully to stop
(arrow).
Reinstall pump. Coat pump mounting fasteners (arrows)
with Loctite 8 or equivalent thread locking product. Install
and tighten.
Coat pump sprocltet shafl threads with Loctite
8. Reinstall
pump sprocltet with drive chain and tighten mounting nut.
Tightening torques
Oil pump cover to oil pump (M6) 10 Nm (89 in-lb)
Oil pump sprocket to shaft
(M10) 45 Nm (33 ft-lb)
Oil pump to engine block
M8 (8.8 grade) 22 Nm (16 ft-lb)