1998 BMW 540i locking

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21 0-1 0
Clutch
Installing the non-SAC clutch (1 997 5281 model) requires the
use of only a flywheel lock and traditional clutch disc align-
ment tool.
Installing the self-adjusting clutch (SAC) requires several
special tools for aligning and assembling the clutch, as well as
locking the flywheel in place. In addition, the procedure for re-
installing a previously used SAC differs from the procedure
for installing
a new SAC. Be sure to read the SAC installation
procedure through before starting the job.
The pressure plate of the SAC uses a spring-loaded wedge
rino to cornoensate for clutch disc wear. The wedge ring
ad-
;u$s by means of spr'ng tenson, so specal toolsh~st be
used to
appy and relieve spring tension as the c utch pres-
sure plate is installed.
Self adjusting clutch (SAC)
and clutch hydraulics

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Checlc flywheel location dowel
and correct installation. sleeve (arrow) for
damage
4 When installing dual-mass flywheel, position dowel sleeve
next to two locating notches
(arrows).
- Install flywheel using new self-locking bolts,
Tightening torque Flywheel to cranltshaft
(use new self-locking bolts)
120 Nm (89 ft-lb)
Use new self-lock~ng bolls lo rnslall llylvheel Do not reuse llle
old slrelch-lype bolls Do nor rnsrall bolls wrlh Loct~lo@ or srm-
I ilar thread licking compound. 1
Flywheel, removing and installing
(V-8 engine)
- Inspect flywheel for scoring, hot spots, cracks or loose or
worn guide pins. Replace flywheel if any faults are found.
4 Loclcflywheel with BMW special tool 11 2 070. Remove pres-
sure plate and clutch disc as described earlier.
- Use BMW special tool 11 4 180 (Ton. T60) to loosen and re-
move flywheel mounting bolts. Remove flywheel.
- Clean flywheel bolt threads in crankshaft

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Clutch
- Remove flywheel locking tool
4 Inspect and clean release bearing lever. Apply a thin coat of
grease to release bearing lever lubrication points. Install re-
lease bearing. Bearing tabs
(A) align with contact points (B)
on release lever.
CAUTION-
Do not grease release bearing guide sleeve. If guide sleeve
is greased, release bearing may stick to it.
- Clean and lightly lubricate clutch disc splines and transmis-
sion input shaft splines.
- Install transmission. See 230 Manual Transmission
.
Transmission to engine
MB (Torx) 22 Nm (16 fl-lb)
MlO(Torx) 43 Nm (32 fl-lb)
Clutch, installing (new SAC components)
V-8 models and 1998 and later 6 cylinder models are
equipped with the self-adjusting clutch (SAC) pressure plate.
The SAC pressure plate, when new, comes from the factory
with a lock plate at the center which maintains spring tension
on the self-adjusting springs. This
loclting ring must not be re-
moved until the pressure plate is securely installed on tlie fly-
wheel with the clutch disk in place.
CAUTION-
Avoidcontaminating clutch friction surfaces with oilorgrease.
Do not touch these surfaces.
< Center clutch disc on flywheel using centering tool.
5-speed transmission: Special tool 21 2
142
- 6-speed transmission: Special tool 21 2 141
G6S-3782 transmission: Special tool 21 2 201
CAUTION-
Be sure clutch disc is facing the correct way The disc should
be marked "engine side" or "transmission side':
The large bolt in the clutch disc centering tool is used to
in-
stalland remove the tool only. Once the disc is in place on the
eel, remove the bolt to male room for tlie
SACpressure

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21 0-1 8
Clutch
- lnstall flywheel lock, special tool 11 2 170 (6 cylinder model)
or
11 2 070 (V-8 model).
- Install SAC pressure plate on dowel pins at flywheel. lnstall
clutch mounting bolts and tighten each one turn at a time until
pressure plate is fully seated. Torque to specification.
Tightening torques Clutch to flywheel
- M8 (8.8 grade)
MB 110.9 orade)
24 Nm (1 8 it-lb)
34 Nm (25
ft-lb)
Use 14 mm Allen wrench to unscrew (clocltwise or counter-
clockwise) lock plate in center of pressure plate.
NOTE-
The spring lockplate may make snapping noises while being
unscrewed.
Using large bolt, pull out clutch centering tool
Remove flywheel locking tool
4 Inspect and clean release bearing lever. Apply a thin coat of
grease to release bearing lever lubrication points. lnstall re-
lease bearing. Bearing tabs
(A) align with contact points (B)
on release lever.
- Clean release bearing guide sleeve.
CAUTIOG
Do not grease guide sleeve. Ifguide sleeve is greased, re-
lease bearing may stick to it.
- Clean and lightly lubricate clutch disc splines and transmis-
sion input shaft splines.
- lnstall transmission. See 230 Manual Transmission.
Tightening torques
- - - Transmlsslon to engine -
. MB (Torx) 22
Nm (16 it-lb)
MI0 (Torx) 43 Nm (32 it-lb)
* M12 (Torx) 72 Nm (53 it-lb)
.-

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1 Clutch
- lnstall flywheel lock, special tool 11 2 170 (6 cylinder model)
or
11 2 070 (V-8 model).
- lnstall SAC pressure plate on dowel pins at flywheel. lnstall
clutch mounting bolts and tighten each one turn at a time until
pressure plate is fully seated. Torque to specification.
Tightening torques
Clutch to flywheel
- M8 (8.8 grade)
M8 (10.9 grade) 24
Nm (18
ft-ib)
34
Nm (25 ft-lb)
- Slip out clutch centering tool using large bolt.
- Remove flywheel locking tool.
Inspect and clean release bearing lever. Apply a thin coat of
grease to release bearing lever lubrication points. lnstall re-
lease bearing. Bearing tabs
(A) align with contact points (B)
on release lever.
- Clean release bearing guide sleeve.
CA U TIOG
Do not grease guide sleeve. If guide sleeve is greased, re-
lease bearing may stick to it.
- Clean and lightly lubricate clutch disc splines and transmis-
sion input shaft splines.
- Install transmission. See 230 Manual Transmission
Tightening torques
Transmission to engine
- ME (Torx)
. M1O (Torx)
. M12 (Torx) 22
Nm (16 ft-lb)
43
Nm (32 ft-lb)
72
Nm (53 it-lb)

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Manual Transmission Selector shaft seal, replacing
(transmission installed)
- Put transmission into second gear.
- Raise and safely support vehicle.
WARNING-
Make sure the car is stable and well supported at all times.
Use a professional automotive lift
orjack stands designed for
the purpose.
A floorjack is not adequate support
- 6-speed transmission: Remove rear engine splash shield
- Remove exhaust system and heat shields. See 180 Exhaust
System.
- Support transmission with transmission jack.
- Disconnect driveshaft at transmission and tie to side. See
260 Driveshaft.
4 Remove transmission crossmember:
Where applicable, release electrical harnesses from
transmission crossmember.
. Remove transmission mounting bolts (A).
Remove transmission crossmember bolts (B).
Where applicable, remove bolts
(C).
NOTE-
5-speed transmission shown in illustration. 6-speed trans-
mission is similar.
- Tilt down rear of transmission.
CAUTION-
Jilting the engine to lower the transmission can lead to
damaae to various components due to lack of clearance.
-
4 Pry sprlng locking rlng (A) out of groove and press pin
of
sh~fl rod.
Detach
sh~ft rod from selector shafl and tie as~de.
(B) out

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Manual Transmission
- Thoroughly clean guide sleeve mounting bolts, sealing sur-
faces, and threads. Apply
Loctite8243 or equivalent thread
locking compound to guide sleeve bolts. Reinstall guide
sleeve and
spacer(s).
Tightening torques
Guide sleeve to transmission case
M6 10 Nm (89 in-lb)
* M8 x 22 18 Nm (13 ft-lb)
- Max30 25 Nm (18 ft-lb)
- Reinstall transmission.
TRANSMISSION REMOVAL AND
~NSTALLATION
Removal and installation of the transmission is best accorn-
plished on a lifl using a transmission jack.The engine must be
supported using appropriate support equipment. This allows
the engine to pivot on its mounts to access the upper
Torx-
head bolts at the bellhousing.
WARNING-
Male sure the car is stable and well supported at all times.
Use a professional aulomorive lift or jack slanos des~gned
lor the purpose. A floor jack is nor adequare supporr.
The removal of the transmission may upset the balance
of the vehicle on a
lifl.
Transmission, removing and installing
- Disconnect negative (-) cable from battery.
CAUTION-
Prior to disconnecting the battery, read the battery discon-
nection cautions given
in 001 Warnings and Cautions.
V-8 engine: Remove plastic engine cover.
Early models: pry out protective caps (arrows), then re-
move nuts securing cover. Lift off cover.
Later models: depress four studs to release, then
lift off
cover.
- Raise and safely support vehicle
- Remove engine splash shield from underside of vehicle
- Remove exhaust system and heat shields. See 180 Exhaust
System.

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250-2
I Gearshift Linkage
This repair group covers transmission gearshift and linkage service for both manual and automatic transmission
equipped vehicles.
To gain access to the complete gearshift mechanism it is
necessary to remove the exhaust system and the driveshaft
as described in
180 Exhaust System and 260 Driveshaft.
NOTE-
In models with automatic transmission, the electronic immo-
bilizer
(EWS) prevents starter operation unless the gear po-
sition is Park or Neutral.
Special tools
BMW suggests the use of one special tool in the removal
of the gear shift lever for manual transmission equipped
I I vehicles.
Manual transmission
gearshift linkage
--
4 Gearshift linkage
1. Inner rubber boot
2. Shift lever mounting ring
3. Bushing
4. Shift console
5. Shift lever
6. Selector rod
7. Spacer ring
8. Circlip
9. Dowel pin
10. Locking ring
11. Washer
12. Gear selector rod coupling
13. Locking pin
14. Bushing
4 Sh~fter spanner
(Tool No. BMW
25 1 11 0)
MANUAL TRANSMISSION GEARSHIFT