BMW 3 (E46). Manual — part 110
remove cable from bracket. (A5S
325Z transmission shown.)
Disconnect electrical harness
connector(s) from transmission by
turning bayonet lock ring(s) (arrows)
counterclockwise.
On A5S 325Z disconnect two
connectors on the left side of the
transmission.
On A5S 360R / A5S 390R
disconnect the harness connector
at the right rear of the
transmission.
Remove wiring harness(s) from
transmission housing.
-
Disconnect transmission cooler
line clamps from engine.
Disconnect cooler lines from
transmission.
Attach BMW special tool 11 8 022 to
lower control arms.
-
Support transmission with
transmission jack. Remove
transmission support
crossmember.
-
Lower transmission until engine
cylinder head touches firewall.
Tighten knurled screws of BMW
special tool 11 8 022 until tool
supports engine oil pan securely.
Remove access plug in cover plate on
right side of engine block and remove
torque converter bolts. Turn crankshaft
to access bolts.
Remove bellhousing-to-engine
mounting bolts (arrows).
-
Install BMW special tools 24 4 131
and 24 4 135 to secure torque
converter in place during
transmission removal.
CAUTION!
Do not allow the torque converter to
fall off the transmission input shaft.
-
Remove transmission by pulling
back and down. Lower jack to
allow transmission to clear vehicle.
-
Installation is reverse of removal,
noting the following:
Blow out oil cooler lines with
low-pressure compressed air and
flush cooler with clean ATF twice
before reattaching lines to
transmission.
CAUTION!
Wear safety glasses when
working with compressed air.
Do not reuse ATF after flushing.
Install new sealing washers on
hollow bolts.
Install new O-rings on
transmission cooler lines, where
applicable.
Inspect engine drive plate for
cracks or elongated holes.
Replace if necessary.
Check to be sure torque converter
is seated correctly in transmission
during final installation.
When mounting transmission to
engine, the three mounting tabs
on torque converter must be
aligned with indentations on drive
plate. Use an alignment dowel to
line up bolt holes, if necessary.
Fill transmission with clean ATF
until oil level is even with fill hole.
Then check fluid level as
described earlier.
Adjust gearshift mechanism. See
270 Transfer Case
.
Note:
Torx-head mounting bolts should
always be used with washers to prevent
difficult removal in the future.
Tightening torques
ATF drain plug to ATF sump
A5S 325Z
35 Nm (26 ft-lb)
A5S 360R
20 Nm (15 ft-lb)
ATF fill plug to ATF sump
A5S 325Z
30 Nm (22 ft-lb)
A5S 360R
20 Nm (15 ft-lb)
Tightening torques
Front suspension
reinforcement to
chassis (M10)
42 Nm (30 ft-lb)
Torque converter to
drive plate (M10)
45 Nm (33 ft-lb)
Transmission
support
crossmember to
chassis
23 Nm (17 ft-lb)
Transmission to engine (Torx-head
with washer)
M8
21 Nm (15 ft-lb)
M10
42 Nm (31 ft-lb)
M12
72 Nm (53 ft-lb)
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