BMW 5251 Service Manual page 334

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[Lubrication System
<
Disconnect electrical harness connector (arrow) at oil level
sensor.
<
Remove lower oil pan mounting bolts (arrows)
CAUTIOI\C
If the lowerpan does not separate easily from upperpan, a
few taps with a rubber mallet should break it free. Do notpry
the oil pan loose.
-
When installing oil pan:
Thoroughly clean all old gasltet material from mating sur-
faces and use a new gasket.
4
Install threaded guide studs at locations marked by arrows
to guide new oil pan gasltet and oil pan into position and to
prevent damage to sealing lip.
-
Install new oil pan mounting bolts (threads coated with
sealer).
Remove guide studs and install remainder of oil pan bolts.
-
Remainder of reassembly is reverse of disassembly
-
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).
Tightening torques
Lower oil pan to upper
oil
pan
M6 (8.8
grade)
10
Nm
(89
in-lb)
M6 (10.9
grade) 12
Nm
(9
ft-lb)
M8 (8.8
grade)
22
Nm
(16
ft-lb)
Oil drain plug to oil pan
(M12)
25 Nm (18
ft-lb)