Table of Contents
Advertisement
RE 24851-B/06.09 | W.H; WM.H
CAUTION!
6.9
Connecting the hydraulic control
The following description applies to the following valve types:
..WHH....
1.
Before any assembly and disassembly work starts, the surroundings must
be cleaned so that no dirt can get into the oil circuit. Only non-linting fabric or
special paper may be used for cleaning.
2.
Screw in the fitting at the hydraulic connections and tighten it with the pre-
scribed tightening torque, see table 8.
Table 8:
Fitting
Thread
G1/4
G1/8
This tightening torque refers to the maximum admissible operating pressure.
3.
Lay the connection lines according to the applicable technical rules.
4.
Make sure that all pipes and hose assemblies and every combination of
connection pieces, couplings or connection points with hoses or pipes are
checked for their operational safety by someone who has the appropriate
knowledge and experience.
6.10
Changing the pilot oil supply and return
The valve can optionally be operated with internal or external pilot oil supply and
return. The delivery condition of the valve results from the type designation, see
ordering code in the "Technical data sheet".
The valve can be converted to other operating modes; this may, how-
ever, only by done by the Bosch Rexroth Service or any other authorized
Bosch Rexroth department.
After a conversion of the pilot oil supply and/or return, the coded type designa-
tion printed on the name plate of the valve does not specify the current status
any more and must thus be corrected.
Thus, we recommend a conversion and the update of the name plate by the
Bosch Rexroth Service.
6.11
Installing the touch guard
Risk of burning!
The valve considerably heats up during operation. The valve gets so hot during
operation that you may burn yourself.
Install a touch guard.
As protection against the hot valve surfaces, Bosch Rexroth recommends the
installation of a touch guard so that unwanted contact with the hot surface can
be avoided.
Bosch Rexroth AG
Tigthening torque
Fitting
40 Nm
20 Nm
25/40
Assembly
Advertisement
Table of Contents
