exhaust BMW 528i 1999 E39 Workshop Manual

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Exhaust System
Oxygen sensors (precatalyst), replacing
(M52 TU and M54)
The precatalyst oxygen sensors are installed at the top of the
exhaust manifolds.
WARNING-
Allow components to cool before servicing.
- Using BMW scan tool DlSplus (Diagnostic Information Sys-
tem) or equivalent, read out and clear ECM fault codes.
Working at right side of engine above exhaust manifolds,
remove front or rear oxygen sensor harness connector
(arrows) from bracket, then separate plug.
NOTE-
In photo, secondary air pump has been removed for clarity.
Remove oxygen sensor using special oxygen sensor
removal socket.
Installation is reverse of removal
New sensor threads come coated with anti-seize paste.
If reusing a sensor, apply thin coat of anti-seize paste to
threads only. Do not contaminate tip of sensor with paste
or lubricants of any sort.
Install harness and connector in original location.
Tightening torque
- -.
Oxygen sensor to manifold 50 Nm (37 ft-lb)
Oxygen sensors (post-catalyst), replacing
(M52 TU and M54)
The post-catalyst oxygen sensors are installed at the rear of
the catalytic converters.
WARNING-
Allow components to cool before servicing
- Using BMW scan tool DlSplus or equivalent, read out and
clear ECM fault codes.
- Remove large cover from above fuel raillintake manifold.

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Exhaust System
Label and disconnect sensor harness connectors (arrows).
CAUTlOI\C
Label connectors so that front and rear connectors are not
mixed up.
- Detach harness from guides and brackets.
- Remove oxygen sensor from exhaust manifold using special
tool
11 7 030 or equivalent.
- Installation is reverse of removal
New sensor threads come coated with anti-seize paste.
If reusing old sensor, apply thin coat of anti-seize paste to
threads only. Do not contaminate tip of sensor with paste
or lubricants of any sort.
Install harness and connector in original location.
Tightening torque
Oxygen sensor to manifold 50 Nm (37 ft-lb)
Oxygen sensor, replacing
(M52 and M62 engine)
The sensors are installed at the front and rear of the catalytic
converters.
I WARNING- I
I Allow components to cool before servicing. I
Using BMW scan tool DlSplus or equivalent, read out and
clear
ECM fault codes.
Detach harness from guides and brackets.
Remove oxygen sensors (arrows) from exhaust using spe-
cial tool
ll 7 030 or equivalent.
Installation is reverse of removal
New sensor threads come coated with anti-seize paste.
If reusing a sensor, apply thin coat of anti-seize paste to
threads only. Do not contaminate tip of sensor with paste
or lubricants of any sort.
Install harness and connector in original location.
Tightening torque
Oxvaen sensor to manifold 50 Nm (37 it-lb)

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Exhaust System
M52 engine
(5281 1997-1 998)
1. Exhaust manifolds
2. Sealing washer
3. Plug
4. Gasket (manifold to cylinder
head)
5. Clamping sleeve
6. Post-catalytic converter oxygen sensor
7. Pre-catalytic converter oxygen
sensor
8. Hanger
9. Rear muffler
10. Vibration dampener
11. Center support bracket
12. Clamping sleeve
13. Front pipe with catalytic
converters
14. Hanger
15. Center muffler
16. Gasket (front pipe to manifold)

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I Exhaust System
M52 TU and M54 engines
(528i 1999-2000
and 525i 2001-2003)
1. Transmission bracket
2. Center support bracket
3. Front muffler
4. Clamping sleeve
5. Vibration dampener
6. Hanger
7. Rear muffler
8. Hanger
9. Center muffler
10. Oxygen sensors, post-catalytic
converter
11. Oxygen sensors, pre-catalytic
converter
12. Exhaust manifoldlcatalytic
converter assemblies

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Exhaust systeml
M54 engine
(5301 2001-2003)
Clamping sleeve
Front muffler Rear muffler
Hanger
Vibration dampener
Clamping sleeve
Center muffler
Hanger
Gasket (front pipe to manifold)
10. Exhaust
manifold/catalytic
converter assemblies
11. Oxygen sensors, post-catalytic converter
12. Oxygen sensors, pre-catalytic converter

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I Exhaust System
M62 engine
(540i 1997-1 998)
1. Right side catalytic converters
2. Support bracket
3. Support bracket
4. Center muffler
5. Hanger
6. Rear muffler
7. Clamping sleeve
8. Oxygen sensors, post-catalytic
converter
9. Oxygen sensors, pre-catalytic
converter
10. Left side catalytic converter
11. Sealing rings
12. Left front exhaust manifold
13. Left rear exhaust manifold
14. Gasket
15. Exhaust manifold, right front
16. Exhaust manifold, right rear

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Exhaust systeml
M62 TU engine
(540i 1999-2003)
1. Oxygen sensors, pre-catalytic
converter
(2)
2.
Oxygen sensors, post-catalytic
converter
(2)
3.
Hanger
4. Rear muffler
5. Clamping sleeve
6. Hanger
7. Center muffler
8. Clamping sleeve
9. Catalytic converter, left side
10. Catalytic converter, right side
11. Exhaust manifoldlcatalytic
converter,
left side
12. Gasket (2)
13.
Gasket (2)
14.
Exhaust manifoldlcatalytic
converter, right side

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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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230-1 0
I Manual Transmission
Output shaft seal, replacing (5-speed
transmission) (transmission installed)
- Raise and safely support vehicle.
WARNING -
Make sure the car is stable and well supported at all times.
Use a professional automotive
lilt orjack stands designed
for the purpose.
A floorjack is not adequate support.
- Remove exhaust system and heat shields. See 180 Exhaust
System
Support transmission with transmission jack.
Disconnect driveshafi at transmission output flange, and
hang driveshaft to side. See
260 Driveshaft.
Remove transmission crossmember:
If applicable, release electrical harnesses from transmis-
sion crossmember.
Remove transmission mounting bolts
(A).
Remove transmission crossmember bolts (6).
Where applicable, remove bolts (C).
- Tilt down rear of transmission.
CAUTIOI\C
Tilting the engine to lower the transmission can lead to
damage to various components due to lack of clearance.
4 Remove collar nut with BMW special tool (see table below) or
suitable thin-walled deep
socltet. Use BMW special tool
23 0 020 or equivalent to counterhold output flange.
Collar nut sockets
Transmission
BMW special tool
Getrag S5D 250G 23 1 21 0 (27 mm)
ZF S5D 3202 23 2 320 (36 mm)
Use puller (BMW special tool 33 1 150 or equivalent) to
remove output flange.
Use BMW special tool
00 5 010 or other suitable seal puller
to remove seal from transmission housing.

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230-12
/ Manual Transmission
Output shaft seal, replacing (6-speed
transmission) (transmission installed)
- 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.
- Remove exhaust system and heat shields. See 180 Exhaust
System.
- Support transmission with transmission jack
- Disconnect driveshaft at transmission output flange, and
hang driveshaft to side. See
260 Driveshaft.
Remove transmission crassmember:
If applicable, release electrical harnesses from transmis-
sion crossmember.
Remove transmission and crossmember mounting bolts
(arrows).
5022305201 - Tilt down rear of transmission
CAUTION-
Tlting the engine to lower the transmission can lead to dam-
age to various components due to lack of clearance.
Use screwdriver to pry out output flange collar nut retaining
plate.
Remove collar nut with BMW special tool
23 2 320 or equiv-
alent thin-walled deep socltet
(36 mm). Use BMW special
tool
23 0 020 or equivalent to counterhold output flange.