BMW 745i Repair Instructions page 91

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Unscrew bolts.
Loosen right nut.
Unscrew left nut.
Swing away clamp to one side.
INSTALLATION: Check retaining rings, replacing
if necessary.
lift out retaining rings.
Remove exhaust assembly.
INSTALLATION: Check retaining rings, replacing
if necessary.
IMPORTANT! Always cover the turbine after re-
moving the exhaust assembly. The blades of a tur-
bine would be destroyed when operated, if dirt were
allowed to enter!