Differential Oil Level, Checking - BMW 5251 Service Manual

Final Drive
Tightening torques
F~nal drive to rear axle carrier 105 Nm (77 it-lb)
Driveshaft
CV
joint to final drive flange
-
MlO (Torx bolt)
70 Nm (51 ft-lb)
-
M8 (compression nut)
32
Nm
(24 ft-lb)
Drive axle to final drive ilange
Torx bolts (M10) 83
N m
(61 ft-lb)
Torx bolt with rlbbed teeth (M10) 64
N m
(47 ft-lb)
Torx bolt wlth ribbed teeth (MI0 sliver) 80
N m
(59 ft-lb)
Torx bolt with ribbed teeth (M10 black) 100
N m
(74 ft-lb)
*
Torx bolt with ribbed teeth (M12) 135 Nm (100 ft-lb)
Differential oil level, checking
The E39 differential is filled with lifetime oil that ordinarily
does not need to be changed. BMW recommends using only
a specially formulated synthetic gear oil (SAF-XO) that is
available through an authorized BMW dealer parts depart-
ment. For additional information on this lubricant and any oth-
er lubricants that may be compatible, contact an authorized
BMW dealer service department.
<
Check rear differential oil level at filler plug (arrow).
-
Check lubricant level with car on a level surface:
Level is correct when fluid just reaches edge of filler hole.
If necessary, top up fluid.
*
Replace filler plug sealing ring.
Install and tighten oil filler plug when oil level is correct.
NOTE-
Use either a 14 m m or 17 mm Allen socket to remove the
drain plug.
I f car is raised in the air. it should be level when checkino
"
or filling final drive fluid level.
-
Tightening torque
-
Filler plug to final drive housing 70 N m (52 ft-lb)
-