Bosch Rexroth WS200, Operating Instructions Manual

Page: 81 / 92

Troubleshooting 81/92
DCA_DE_000151/10-2013, WS200, Bosch Rexroth AG
Actions for the pressure relief by disconnecting the coupling socket/connector

Check the following points before disconnecting the coupling connector/socket:
•
Connect the tank port (marking T) of the component (e.g. directional valve) with the
tank port at the P/T distributor of the work station and operate the component, e.g.
switch the directional valve.
• Connect a hydraulic hose line (e.g. R961002474) at the tank port of the P/T distributor.
Then connect the other side of the hydraulic hose line with the connection which
cannot be coupled.

If the preceding steps have not been successful and the coupling connector or the
coupling socket is still blocked, you have to disconnect that part from the component.

For loosening the coupling connector which is installed in a plate, we recommend fixing
the component by means of clamping equipment (see fig. 54 -2) in advance.

For loosening a coupling socket, we recommend using two hexagon sockets with
a wrench size of 19 mm. In this connection, one of the two hexagon wrenches is used as
counter bearing.

Loosen the blocked coupling connector/socket by means of the hexagon wrench.

Screw out the coupling connector/socket by 2 more rotations.

Check whether the coupling connector is now unloaded. To do so, connect a hydraulic
hose line (e.g. R961002474) to the coupling connector.

Leave the hydraulic hose line coupled and tighten the coupling connector manually.
The excessive hydraulic fluid can flow into the hydraulic hose line.

Uncouple the hydraulic hose line and tighten the coupling connector applying the
specified tightening torque (fig. 57).

For coupling sockets: After loosening, couple the coupling socket to be unloaded to one
of the two tank connections of the P/T distributor.

Leave the coupling socket coupled and tighten it manually. The excessive hydraulic fluid
can flow into the tank connection of the P/T distributor.

Uncouple the coupling socket and tighten the coupling socket applying the specified
tightening torque (fig. 57).
When loosening the coupling connector/socket, a small quantity of hydraulic fluid may leak.
Keep corresponding cleaning cloths ready. Dispose of used cleaning cloths according to the
country-specific regulations. Also observe the safety instructions in chap. 15.1.