Disconnect/connect transmission oil line - AR27.10-P-0501-03SX

TRANSMISSION 722.9 in MODEL 230, 216.3, 221.1 /0, 231 

TRANSMISSION 722.6 in MODEL 230, 216.3, 221.1 

Fig 1: Identifying Set Of Stop Plugs (129 589 00 91 00)

Courtesy of MERCEDES-BENZ USA

Remove retaining clamp on connector 

Before opening the hydraulic system the area surrounding the separation point should be cleaned thoroughly. Even minute particles of dirt in the hydraulic components can result in malfunctions and total failure of the hydraulic system.

1. Detach dust cap (3) and push back along the transmission oil line (1) until the connector (2) is accessible.
2. Position a suitable tool (e.g. hook) at one end of the retaining clamp (2a) and pull the retaining clamp (2a) off the connector (2).
3. Pull transmission oil line (1) out of connector (2).

   Seal off line connections using plugs.

4. Pull dust cap (3) off transmission oil line (1).
   Fig 2: Identifying Transmission Oil Line, Connector, Dust Cap And Retaining Clamp

   Courtesy of MERCEDES-BENZ USA

   Attach retaining clamp to connector 

   The safety clamp (2a) must be replaced after every disconnection of a transmission oil line (1).

5. Introduce one end of the safety clamp (2a) into a cutout (2b) on the connector (2).
6. Push retaining clamp (2a) in the direction of the arrow until the retaining clamp (2a) clicks into place in the connector (2).
   Fig 3: Identifying Safety Clamp

   Courtesy of MERCEDES-BENZ USA
   Fig 4: Pushing Retaining Clamp

   Courtesy of MERCEDES-BENZ USA

   The securing clamp (2a) must not be pushed straight (radially) over the connector (2) otherwise the securing clamp (2a) will be overstretched and correct sealing of the line connection is no longer guaranteed.

   Fig 5: Identifying Incorrect Securing Clamp Positioning

   Courtesy of MERCEDES-BENZ USA

   Attach transmission oil line to connector 

   The dust cap (3) must be replaced after every disconnection of a transmission oil line (1).

7. Push dust cap (3) onto the transmission oil line (1).
8. Introduce transmission oil line (1) straight into the connector (2) until it audibly and noticeable latches.
9. Push dust cap (3) onto the connector (2) until it latches and can turn freely.

   If the dust cap (3) cannot be pushed over the connecting point then the transmission oil line (1) is not fully latched in the connector (2) or the safety clamp (2a) is overstretched.