Quick-Connect Coupling With ID Marking

Fig 1: Identifying Quick-Connect Coupling With ID Marking

Courtesy of BMW OF NORTH AMERICA, INC.

Removing: 

Push quick-connect coupling (1) against pipe (4) (thereby relieving strain on spring (2)).

Press plastic ring (3) into quick-connect coupling (1) and remove coupling (1).

Assembly: 

Markings (K) on coupling (1) and pipe (4) must be flush.

Push quick-connect coupling (1) onto pipe (4) until a "click" can clearly be heard.

To check that quick-connect coupling (1) has been installed correctly, pull it back forcefully.