Instructions for disassembly/assembly of coolant hose fast-release couplings

WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 2005 BMW 330xi, 2005 BMW 330i, 2005 BMW 330Ci, 2004 BMW 330xi, and 2004 BMW 330i. However, it is still accessible from the selected car via links, so may be relevant.

Disassembly of fast-release coupling

Withdraw lock (1/2), disconnect hose.

Fig 1: Disconnecting Hose

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Installation:

Check O-rings (1).
Do not coat O-rings (1) with antiseize agent.

Fig 2: Checking O-Rings

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Assembly of fast-release coupling

Press in lock (1) before installing fast-release coupling.

Push on hose.

Fast-release coupling must audibly snap into place.

Fig 3: Pressing In Lock

Courtesy of BMW OF NORTH AMERICA, INC.