BMW 5251 Service Manual page 246

117-10
/Camshaft Timing Chain
NOTE-
The crankshaft hub center bolt is torqued to 410
Nm
(300 ft-lb).
-
Install crankshaft damper puller (BMW special tool 11 8 21 0)
to 11 8 200. Use bolt to remove damper from crankshaft.
-
Oil seal replacement:
4
Install cap (BMW special tool 11 2 383) on end of crankshaft.
Install seal guide (BMW special tool 11 2 385) over end of
crankshaft. Be sure to align groove with lteyway on crank-
shaft (arrow).
4
Install oil seal puller (BMW special tool 11 2 380) and screw
in body of puller until it contacts seal. Tighten screw in center
of tool to draw seal out of cover.