26/
36
Bosch Rexroth AG
M-...S...SO711/712 | RE 22340-B1/11.12
Assembly
Have sufficiently dimensioned collecting containers, non-linting fabric and
medium-binding materials ready in order to collect or bind leaking medium.
Assembly steps of the directional seat valve:
The mounting surfaces of the directional seat valve and the subplate must be
clean and free of hydraulic fluid.
f
Use non-linting cleaning cloth to clean the subplate.
1.
Remove the protective cover at the directional seat valve.
2.
Ensure correct orientation of the directional seat valve. Observe the porting
pattern according to the symbol and connection labeling at the directional
seat valve.
3.
Check whether all seal rings are available and intact.
4.
Carefully put the directional seat valve onto the mounting surface.
5.
Screw the directional seat valve onto the subplate. Only use valve mount-
ing screws that are specified in section 5.3.7 "Unit dimensions (dimensions
in mm)". The valve mounting screws are to be tightened using a torque power
screwdriver (tolerance ≤ ±10 %) and a tightening torque of 7 Nm. This tighten
-
ing torque refers to the maximum admissible operating pressure.
6.
Please note that the tightening torques may change if other screw types
are used.
Hydraulically connecting the directional seat valve
1.
Depressurize the relevant part of the system.
2.
Establish all connections; in this connection, observe the operating instruc-
tions of the system.
3.
Make sure that pipes and/or hoses are connected to all ports and/or that the
ports are sealed with plug screws.
4.
Carry out a special check to make sure that the cap nuts and flanges are cor-
rectly tightened at the pipe fittings and flanges.
5.
Make sure that all pipes and hose lines and every combination of connection
pieces, couplings or connection points with hoses or pipes are checked for their
operational safety by a person with appropriate knowledge and experience.
