12.4 Materials used
Hydraulic components from Bosch Rexroth do not contain any hazardous materials
that could be released during intended use. In the normal case, no negative effects
on human beings and on the environment have to be expected.
The hydraulic valves basically consist of:
• Cast iron
• Electronic components and assemblies
Due to the high metal share, hydraulic products can mostly be recycled. In order to
achieve an ideal metal recovery, disassembly into individual assemblies is required.
The metals contained in electric and electronic assemblies can be recovered by
means of special separation procedures as well.
13 Extension and modification
Explosion hazard caused by unauthorized modification!
Any unauthorized modification results in the loss of the explosion protection.
Modifications exceeding the extent described in these operating instructions are
With valves with only one valve solenoid, this valve solenoid must not be moved
to the opposite side of the valve as this would interchange the switching
positions and a definite assignment to the type designation would no longer be
The pilot control valve must not be exchanged or replaced by another one.
Additional components like e.g. throttles, preload or pressure reducing valves
must not be installed into the valve.
Such changes may only be carried out by persons authorized by the manufacturer.
Extension and modification
RE 24751-XE-B/04.16, H-4WEH...XE..., Bosch Rexroth AG