Remove the four E10 bolts (green arrows) and four 13mm bolts (blue arrows)
from the reinforcement plate at the rear of the lower oil pan at transmission.
Remove
the reinforcement plate. If necessary, loosen the sway bar mounts to aid removal of
the reinforcement plate.
Lock flywheel with BMW special tool 11 2 100 or a large screwdriver
Remove nut from the crank pulley, slide off pulley evenly. Pulley fit is a
very tight tolerance, it must be removed evenly or will jam. If you pry it, do so from
opposite sides at the same time, this will keep it even.
Pry out seal with a screwdriver, be careful not to scratch
seal mounting surface of lower timing cover.
Installation
Lubricate seal lip lightly with engine oil.
Install seal with BMW special tools 11 1 273 and 11 1 271 ,
or by knocking in gently and evenly with a soft hammer.
Install seal approximately 0.5mm below the surface of the
timing cover so that the sealing lip is running on a fresh section of the crank pulley's
shaft.
Ensure woodruff key is correctly located in nose of crank. If necessary,
place a small amount of Loctite on the key to keep it in position while installing pulley.
Tighten pulley nut to 440± 10 Nm (318± 7 ft lbs.).
