Removing chain tensioner

NOTE: DANGER
High-voltage system.
The high-voltage system operates on the basis of hazardous, electrical voltage and high currents. Danger to life through electric shock!

All work on the high-voltage system may only be carried out by specially trained and technically experienced personnel.
For additional information see:
SAFETY INFORMATION ON HANDLING HYBRID CARS .
For additional information see:
NOTES ON REPAIR OF HIGH-VOLTAGE BATTERY UNIT .

WARNING: Hot surfaces.
Risk of burning!

Perform all work only on components that have cooled down.

Preliminary works

Refer to REMOVING REAR STIFFENING PLATE .

NOTE: TECHNICAL INFORMATION
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.

Loosen chain tensioner using the illustrated tool.

Courtesy of BMW OF NORTH AMERICA, INC.
A small amount of engine oil emerges when removing the chain tensioner (1) so have some cleaning cloths ready.
Loosen chain tensioner (1) from below.

Courtesy of BMW OF NORTH AMERICA, INC.