Open and close coupling - AR09.41-P-1311-01AL

Open coupling 

1. Slide nose (2) of catch spring (3) to position (B).

   Do not pull on the eyelet (1) as the catch spring (3) will lose pretension.

2. Detach hose on component.
3. Replace seal.

   Close coupling 

4. Slide nose (2) of catch spring (3) to position (A).
5. Slide hose onto component until the catch spring (3) latches.
6. Check connection by pulling a little at the hose.
   Fig 1: Identifying Catch Spring And Catch Spring Positions

   Courtesy of MERCEDES-BENZ USA