BMW 1989-1995 525i Service Manual page 221

EXHAUST SYSTEM
180-5
WARNING -
Do not work under
a
lilted car unless it
is
solidly
supported on jack stands designed lor that pur-
pose. Never work under
a
car that is supported
solely by
a
jack.
3. Working beneath car, remove engine splash guard and
then remove heat shields from left and right sides of
front suspension crossmember.
4. Remove alternator. See 121 Ba«ery, Starter, Alterna-
tor.
5. Unbolt left front exhaust pipes from exhaust manifolds.
6. Remove exhaust support bracket assembly from trans-
mission.
7. Remove cylinder head cover from left cylinder head.
See 116 Cylinder Head and Valvetrain.
NOTE-
Note ground strap at cylinder
# 7
and be sure to reinstall
during assembly.
8. Remove upper section of air cleaner housing complete
with air mass sensor. disconnecting and labeling con-
nectors, ducting and hoses as necessary.
9. Working from underside of front suspens ion cross-
member, remove mounting bolls from left and right en-
gine mounts. Disconnect ground strap from engine
mount bracket. where applicable.
10. Install engine lifting device to front and rear lifting
points.
11. Remove exhaust manifold mounting nuts. Then raise
engine just enough to facilitate removal of exhaust
manifolds.
CAUTION -
Check that there is sufficient clearance at rear
bulkhead when raising engine.
Installation is the reverse of removal. Coat the exhaust
manifold mounting studs with copper paste before installing
the new nuts. Install the manifold gaskets with the arched side
facing the manifolds. Be sure to reinstall all ground straps ear-
lier removed.
Exhaust manifolds, removing and
installing (M60 engine, right manifolds)
1. Working from beneath rear seat. disconnect negative
(-) battery cable from battery.
WARNING -
Disconnecting the battery cables may erase lault
codes stored in control unit memory.
2. With exhaust system cold, raise and support car for ac-
cess to exhaust system.
WARNING -
Do not work under
a
lilted car unless it is solidly
supported on jack stands designed for that pur-
pose. Never work under
a
car that is supported
solely by a jack.
3. Working beneath car. remove engine splash guard and
then remove heat shields from front suspension cross-
member.
4. Unbolt right front exhaust pipes from exhaust mani-
folds.
5. Remove windshield washer reservoir from in front of
shock tower and set aside.
6. Remove exhaust manifold mounting nuts. Remove
manifolds from above, removing manifold for cylinders
2/4 first.
Installation is the reverse of removal. Coat the exhaust
manifold mounting studs with copper paste before installing
the new nuts. Install the manifold gaskets with the arched side
facing the manifolds.
EXHAUST SYSTEM REPLACEMENT